{
  "game": "order-of-the-sinking-star",
  "revision": "low-mirrors-selected-layouts-2026-10-23-selected-video-display-2026-10-24",
  "sourceId": "low-mirrors-selected-layouts",
  "counts": {
    "cards": 31,
    "matchedTextOnly": 0,
    "matchedNoCard": [],
    "articleImages": 38
  },
  "displayPolicy": "Original article stills remain identity evidence. The five formerly text-only article matches now have selected source-video detail views; eleven separate Overworld targets remain unassigned. Cropped cards show a selected detail of repeating rooms, not a full period.",
  "cards": [
    {
      "levelId": "crystal_island",
      "articlePuzzleNumber": 1,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 1,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-01-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "The pale paving island, two pink crystal rows, and mirror on the dark north rock identify this layout.",
        "浅色铺地岛、两列粉色水晶和北侧暗色岩台上的镜子可辨认此布局。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 1 selected layout",
          "zh": "Low Mirrors 文章第 1 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-01.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 1,
            "internalSetPosition": 1,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-01-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "c149db6ac76bc200529093dfb0625785676d75dacea5af6cecacc5282e55afac",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-01-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "c149db6ac76bc200529093dfb0625785676d75dacea5af6cecacc5282e55afac",
            "imageSha256": "7538a14501710b1f6ffe252d6851d43e90252d3584341f9a37d412598e03b3d9",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 250,
                  "y": 268
                },
                "rect": [
                  222,
                  240,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "upper crystal in the left pink row",
                  "zh": "左侧粉色水晶列上方的水晶"
                }
              }
            ],
            "instruction": {
              "en": "The pale paving island, two pink crystal rows, and mirror on the dark north rock identify this layout.",
              "zh": "浅色铺地岛、两列粉色水晶和北侧暗色岩台上的镜子可辨认此布局。"
            },
            "result": {
              "en": "Source-reported: leave a second stone below the paving stone so it can later be pushed upward.",
              "zh": "文章摘要：铺路石下方还需留一块石头，之后才能从下方推上去。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 1; blue ring marks a visible layout landmark in crystal_island.",
              "zh": "Low Mirrors 文章第 1 题；蓝色圆环标出 crystal_island 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "bottleneck",
      "articlePuzzleNumber": 2,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 17,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-02-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "Two raised gold platforms face each other across a narrow dragon bridge.",
        "两座金色高台隔着狭窄的巨龙桥相对。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 2 selected layout",
          "zh": "Low Mirrors 文章第 2 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-02.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 2,
            "internalSetPosition": 17,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-02-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "9bd20136c034b3fb8f97ab8ee9dff703a0afdc881cd87803f756a6858edf45ae",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-02-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "9bd20136c034b3fb8f97ab8ee9dff703a0afdc881cd87803f756a6858edf45ae",
            "imageSha256": "f88c0e8cc526f745901d091300e52e39e1d9391acc7776aa8dee3a687816e505",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 452,
                  "y": 174
                },
                "rect": [
                  424,
                  146,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "narrow bridge between the platforms",
                  "zh": "两座平台之间的狭窄桥"
                }
              }
            ],
            "instruction": {
              "en": "Two raised gold platforms face each other across a narrow dragon bridge.",
              "zh": "两座金色高台隔着狭窄的巨龙桥相对。"
            },
            "result": {
              "en": "Source-reported: use two stones as a piston to move the mirror through the narrow passage.",
              "zh": "文章摘要：用两块石头组成“活塞”，把镜子推过狭窄通道。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 2; blue ring marks a visible layout landmark in bottleneck.",
              "zh": "Low Mirrors 文章第 2 题；蓝色圆环标出 bottleneck 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "hanoi_3",
      "articlePuzzleNumber": 3,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 18,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-03-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "Three goblins line the left arm of a tall cross-shaped walkway; mirrors sit below.",
        "三个哥布林排在高耸十字形步道的左臂上，镜子在下方。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 3 selected layout",
          "zh": "Low Mirrors 文章第 3 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-03.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 3,
            "internalSetPosition": 18,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-03-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "f74db6a06fca3a437bebae2e4a911b547f1986cdc33785540f9e8b0da72d8ffc",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-03-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "f74db6a06fca3a437bebae2e4a911b547f1986cdc33785540f9e8b0da72d8ffc",
            "imageSha256": "97a5bd753482c370adc29fd61cd23147661eb644d3ea6de68bea61717826f96a",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 477,
                  "y": 260
                },
                "rect": [
                  449,
                  232,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "central blue pad and walkway crossing",
                  "zh": "中央蓝色垫与通道交叉处"
                }
              }
            ],
            "instruction": {
              "en": "Three goblins line the left arm of a tall cross-shaped walkway; mirrors sit below.",
              "zh": "三个哥布林排在高耸十字形步道的左臂上，镜子在下方。"
            },
            "result": {
              "en": "Source-reported: the article describes a seven-move Hanoi-style ordering puzzle.",
              "zh": "文章摘要：文章将其描述为七步的汉诺塔式顺序谜题。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 3; blue ring marks a visible layout landmark in hanoi_3.",
              "zh": "Low Mirrors 文章第 3 题；蓝色圆环标出 hanoi_3 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "busy_beaver",
      "articlePuzzleNumber": 4,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 19,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-04-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "Four long gold arms form a zigzag, with a mirror at each upper end.",
        "四条金色长臂组成之字形，每条上端各有一面镜子。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 4 selected layout",
          "zh": "Low Mirrors 文章第 4 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-04.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 4,
            "internalSetPosition": 19,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-04-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "24b4363ba123bfb3ccff9279fa68f914f8a2ab630f7f6d1d7a2b9ffaada0a835",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-04-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "24b4363ba123bfb3ccff9279fa68f914f8a2ab630f7f6d1d7a2b9ffaada0a835",
            "imageSha256": "1ef2a6a435a73df24d2f12ffc355203f94d139c1ba2d5cb2ea1d376ebf138f0e",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 497,
                  "y": 112
                },
                "rect": [
                  469,
                  84,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "upper mirror on the zigzag arm",
                  "zh": "之字形长臂上端的镜子"
                }
              }
            ],
            "instruction": {
              "en": "Four long gold arms form a zigzag, with a mirror at each upper end.",
              "zh": "四条金色长臂组成之字形，每条上端各有一面镜子。"
            },
            "result": {
              "en": "Source-reported: the article compares the repeated pulls to a four-ring Chinese rings puzzle.",
              "zh": "文章摘要：文章把反复拉动过程比作四环中国环谜题。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 4; blue ring marks a visible layout landmark in busy_beaver.",
              "zh": "Low Mirrors 文章第 4 题；蓝色圆环标出 busy_beaver 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "moving_through_mirrors_v3",
      "articlePuzzleNumber": 5,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 20,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-05-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A diagonal staircase of mirrors crosses a dark green floor beneath the temple roof.",
        "寺庙屋檐下的深绿色地面上，镜子排成斜向阶梯。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 5 selected layout",
          "zh": "Low Mirrors 文章第 5 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-05.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 5,
            "internalSetPosition": 20,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-05-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "de8ee6110728beb61eac1cdaceee4e362139e610e00d38aa69a10857ec2f98be",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-05-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "de8ee6110728beb61eac1cdaceee4e362139e610e00d38aa69a10857ec2f98be",
            "imageSha256": "97888ad45b1cf63bc0146d174359a00839c50c97f26eb3b81b0191c79b51fc8e",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 430,
                  "y": 320
                },
                "rect": [
                  402,
                  292,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "diagonal mirror staircase",
                  "zh": "斜向镜子阶梯"
                }
              }
            ],
            "instruction": {
              "en": "A diagonal staircase of mirrors crosses a dark green floor beneath the temple roof.",
              "zh": "寺庙屋檐下的深绿色地面上，镜子排成斜向阶梯。"
            },
            "result": {
              "en": "Source-reported: the article says the Wizard’s swaps follow reflected lines of sight.",
              "zh": "文章摘要：文章指出，法师的交换位置会沿反射后的视线进行。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 5; blue ring marks a visible layout landmark in moving_through_mirrors_v3.",
              "zh": "Low Mirrors 文章第 5 题；蓝色圆环标出 moving_through_mirrors_v3 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "druid_vertical_mirror",
      "articlePuzzleNumber": 6,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 13,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-06-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "Small brown islands at left face a dark platform with three yellow exits at right.",
        "左侧的小块褐色岛屿对着右侧带三个黄色出口的暗色平台。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 6 selected layout",
          "zh": "Low Mirrors 文章第 6 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-06.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 6,
            "internalSetPosition": 13,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-06-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "ddb108bb27317c3d3eca811dcca3bdcaa167c5dac01709a35ff43163ffd8a7f2",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-06-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "ddb108bb27317c3d3eca811dcca3bdcaa167c5dac01709a35ff43163ffd8a7f2",
            "imageSha256": "fae028f719fd2afb80e63a8a58526b67d6ceb9c8f9e9276b800cf594e846df10",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 674,
                  "y": 203
                },
                "rect": [
                  646,
                  175,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "middle yellow exit on the right platform",
                  "zh": "右侧平台中间的黄色出口"
                }
              }
            ],
            "instruction": {
              "en": "Small brown islands at left face a dark platform with three yellow exits at right.",
              "zh": "左侧的小块褐色岛屿对着右侧带三个黄色出口的暗色平台。"
            },
            "result": {
              "en": "Source-reported: the article says the lower Priestess crosses as a crystal.",
              "zh": "文章摘要：文章指出，下方的女祭司需要以水晶形态渡过水面。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 6; blue ring marks a visible layout landmark in druid_vertical_mirror.",
              "zh": "Low Mirrors 文章第 6 题；蓝色圆环标出 druid_vertical_mirror 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "special_move",
      "articlePuzzleNumber": 7,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 14,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-07-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A square upper platform and a narrow lower island each hold a mirror and hero.",
        "方形上层平台和狭长下方小岛各有一面镜子和一名英雄。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 7 selected layout",
          "zh": "Low Mirrors 文章第 7 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-07.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 7,
            "internalSetPosition": 14,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-07-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "db81df8b746e1759838be4ec8ed80d21bd5b33087e8d7d9ccf50fbdad7eae15d",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-07-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "db81df8b746e1759838be4ec8ed80d21bd5b33087e8d7d9ccf50fbdad7eae15d",
            "imageSha256": "0840c1ac220535ff1ac2811bcc9de1cc1e90fa4af96dd243000469a1ad1ca942",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 640,
                  "y": 375
                },
                "rect": [
                  612,
                  347,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "mirror on the lower-right platform",
                  "zh": "右下平台上的镜子"
                }
              }
            ],
            "instruction": {
              "en": "A square upper platform and a narrow lower island each hold a mirror and hero.",
              "zh": "方形上层平台和狭长下方小岛各有一面镜子和一名英雄。"
            },
            "result": {
              "en": "Source-reported: the article uses a crystal teammate as a temporary stepping stone.",
              "zh": "文章摘要：文章用变成水晶的队友临时铺路。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 7; blue ring marks a visible layout landmark in special_move.",
              "zh": "Low Mirrors 文章第 7 题；蓝色圆环标出 special_move 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "druid_metamirror",
      "articlePuzzleNumber": 8,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 21,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-08-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A hooked green island connects to a separate upper-right platform through crystal mirrors.",
        "弯钩形绿色岛屿通过水晶镜连接到右上方的独立平台。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 8 selected layout",
          "zh": "Low Mirrors 文章第 8 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-08.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 8,
            "internalSetPosition": 21,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-08-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "4f2510c0dcad6d7747f240733cc20033a2433950a5405a4e7e31c25406e170ef",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-08-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "4f2510c0dcad6d7747f240733cc20033a2433950a5405a4e7e31c25406e170ef",
            "imageSha256": "02e27e7c8af9027c448460dc5f47d01ca52a8d089193a0dbffa496ac94272ba3",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 417,
                  "y": 321
                },
                "rect": [
                  389,
                  293,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "crystal mirror at the lower edge",
                  "zh": "下边缘的水晶镜"
                }
              }
            ],
            "instruction": {
              "en": "A hooked green island connects to a separate upper-right platform through crystal mirrors.",
              "zh": "弯钩形绿色岛屿通过水晶镜连接到右上方的独立平台。"
            },
            "result": {
              "en": "Source-reported: the article uses crystal mirrors as stepping stones and removes an unwanted reflection.",
              "zh": "文章摘要：文章把水晶镜当作垫脚石，并移除一处多余反射。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 8; blue ring marks a visible layout landmark in druid_metamirror.",
              "zh": "Low Mirrors 文章第 8 题；蓝色圆环标出 druid_metamirror 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "mirror_the_unmirrorable_mirror",
      "articlePuzzleNumber": 9,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 22,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-09-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A compact ruined island has a framed pair of cyan exits, a plant, and a mirror.",
        "紧凑的废墟小岛上有一对框住的青色出口、一株植物和一面镜子。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 9 selected layout",
          "zh": "Low Mirrors 文章第 9 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-09.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 9,
            "internalSetPosition": 22,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-09-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "c64a1f65b48523f0b64b944ca62ca76b0c5c301ee77c5d03ae1c4b0001dd90ee",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-09-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "c64a1f65b48523f0b64b944ca62ca76b0c5c301ee77c5d03ae1c4b0001dd90ee",
            "imageSha256": "0d76831449381e8bf4b329c2d00e5d1804cf917e01c7f77a3b6c18e8d808029d",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 632,
                  "y": 378
                },
                "rect": [
                  604,
                  350,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "mirror at the lower-right edge",
                  "zh": "右下边缘的镜子"
                }
              }
            ],
            "instruction": {
              "en": "A compact ruined island has a framed pair of cyan exits, a plant, and a mirror.",
              "zh": "紧凑的废墟小岛上有一对框住的青色出口、一株植物和一面镜子。"
            },
            "result": {
              "en": "Source-reported: the article turns the mirror into crystal before moving it to avoid the edge.",
              "zh": "文章摘要：文章先把镜子变成水晶再移动，以避开边缘卡住的问题。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 9; blue ring marks a visible layout landmark in mirror_the_unmirrorable_mirror.",
              "zh": "Low Mirrors 文章第 9 题；蓝色圆环标出 mirror_the_unmirrorable_mirror 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "bard_metamirror",
      "articlePuzzleNumber": 10,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 23,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-10-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "Several grey and green islands step toward the Bard’s pink-lit platform at right.",
        "灰色与绿色小岛层层延伸，通向右侧粉色光效中的吟游诗人平台。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 10 selected layout",
          "zh": "Low Mirrors 文章第 10 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-10.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 10,
            "internalSetPosition": 23,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-10-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "2287051f9d93535d60994f28d8e78871f031e8c473cb698a797b67105300a707",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-10-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "2287051f9d93535d60994f28d8e78871f031e8c473cb698a797b67105300a707",
            "imageSha256": "30e9be9cd82f3cd96f228e23b0afbd25f7e1bafb6e9b38848389947211ac05d8",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 537,
                  "y": 230
                },
                "rect": [
                  509,
                  202,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "crystal mirror between the island groups",
                  "zh": "小岛群之间的水晶镜"
                }
              }
            ],
            "instruction": {
              "en": "Several grey and green islands step toward the Bard’s pink-lit platform at right.",
              "zh": "灰色与绿色小岛层层延伸，通向右侧粉色光效中的吟游诗人平台。"
            },
            "result": {
              "en": "Source-reported: the article says the Bard can steer crystal mirrors while reflecting.",
              "zh": "文章摘要：文章指出，吟游诗人可在反射时操纵水晶镜。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 10; blue ring marks a visible layout landmark in bard_metamirror.",
              "zh": "Low Mirrors 文章第 10 题；蓝色圆环标出 bard_metamirror 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "self_teleporting",
      "articlePuzzleNumber": 11,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 6,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-11-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A central grassy island is surrounded by four cyan corner pads and purple crystals.",
        "中央草地岛被四个青色角落垫和紫色水晶环绕。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 11 selected layout",
          "zh": "Low Mirrors 文章第 11 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-11.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 11,
            "internalSetPosition": 6,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-11-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "0040371fd0fb1ebc615b81dbc71045b2ebb2c21f1892d131d45869a2a9b4ad3f",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-11-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "0040371fd0fb1ebc615b81dbc71045b2ebb2c21f1892d131d45869a2a9b4ad3f",
            "imageSha256": "088a93f61e8485dd7f78d63b60a4812f4683dc44f56667985ccb5315cecc0f60",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 480,
                  "y": 250
                },
                "rect": [
                  452,
                  222,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "grassy central island",
                  "zh": "中央草地岛"
                }
              }
            ],
            "instruction": {
              "en": "A central grassy island is surrounded by four cyan corner pads and purple crystals.",
              "zh": "中央草地岛被四个青色角落垫和紫色水晶环绕。"
            },
            "result": {
              "en": "Source-reported: the article describes a room that wraps on all four sides.",
              "zh": "文章摘要：文章将其描述为四边环绕的房间。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 11; blue ring marks a visible layout landmark in self_teleporting.",
              "zh": "Low Mirrors 文章第 11 题；蓝色圆环标出 self_teleporting 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "lemonade",
      "articlePuzzleNumber": 15,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 12,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-15-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A floating temple floor contains colored gates, mirror pieces, and a button path at left.",
        "漂浮的寺庙地面上有彩色闸门、镜子组件和左侧的按钮通路。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 15 selected layout",
          "zh": "Low Mirrors 文章第 15 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-15.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 15,
            "internalSetPosition": 12,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-15-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "7e6ad8804d58c26bd6e345f2c133bf932656cf4e8507775b18c03dcacff4b74d",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-15-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "7e6ad8804d58c26bd6e345f2c133bf932656cf4e8507775b18c03dcacff4b74d",
            "imageSha256": "72cfc17a189420b90ee296d78b896a6b0fa37a8315bda37357a93df26d34b293",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 360,
                  "y": 250
                },
                "rect": [
                  332,
                  222,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "colored gate and button lane",
                  "zh": "彩色闸门与按钮通道"
                }
              }
            ],
            "instruction": {
              "en": "A floating temple floor contains colored gates, mirror pieces, and a button path at left.",
              "zh": "漂浮的寺庙地面上有彩色闸门、镜子组件和左侧的按钮通路。"
            },
            "result": {
              "en": "Source-reported: the article notes that the mirror placements create a repeating switch-state loop.",
              "zh": "文章摘要：文章指出，镜子摆放会形成重复的开关状态循环。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 15; blue ring marks a visible layout landmark in lemonade.",
              "zh": "Low Mirrors 文章第 15 题；蓝色圆环标出 lemonade 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "lemonade_tng_stages_towers_no_float",
      "articlePuzzleNumber": 16,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 11,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-16-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A tall stone slab faces four colored outline grids; two crystal mirrors sit beside it.",
        "高耸石板对着四组不同颜色的网格，两面水晶镜在旁边。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 16 selected layout",
          "zh": "Low Mirrors 文章第 16 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-16.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 16,
            "internalSetPosition": 11,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-16-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "20638ee7e70a506261b004fa4d252d324f59f784359bed6d6809ec8d8bfbdb31",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-16-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "20638ee7e70a506261b004fa4d252d324f59f784359bed6d6809ec8d8bfbdb31",
            "imageSha256": "45993fdcaf19c397ef041fca2d120795a22ae067ec58a6d618e238e071fa90fe",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 565,
                  "y": 286
                },
                "rect": [
                  537,
                  258,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "middle-right orange outlined grid",
                  "zh": "右侧中部橙色轮廓网格"
                }
              }
            ],
            "instruction": {
              "en": "A tall stone slab faces four colored outline grids; two crystal mirrors sit beside it.",
              "zh": "高耸石板对着四组不同颜色的网格，两面水晶镜在旁边。"
            },
            "result": {
              "en": "Source-reported: the article says one extra crystal mirror must be copied to fill the row.",
              "zh": "文章摘要：文章指出，需要复制一面水晶镜来补齐整排。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 16; blue ring marks a visible layout landmark in lemonade_tng_stages_towers_no_float.",
              "zh": "Low Mirrors 文章第 16 题；蓝色圆环标出 lemonade_tng_stages_towers_no_float 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "base_jump",
      "articlePuzzleNumber": 18,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 3,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-18-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "Two high platforms stand apart, with a small suspended bridge and figures between them.",
        "两座高台分立两侧，中间有悬空小桥和角色。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 18 selected layout",
          "zh": "Low Mirrors 文章第 18 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-18.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 18,
            "internalSetPosition": 3,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-18-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "2c020af76802a53866ff70807202f802b319b185be5a0769b9b3fd21d37fb0ca",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-18-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "2c020af76802a53866ff70807202f802b319b185be5a0769b9b3fd21d37fb0ca",
            "imageSha256": "b6ef456d1ecfe0c26220e286de2c61037382bbdccd626d98defddd911b2c30bb",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 260,
                  "y": 185
                },
                "rect": [
                  232,
                  157,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "left cage and grid platform",
                  "zh": "左侧带笼子的网格平台"
                }
              }
            ],
            "instruction": {
              "en": "Two high platforms stand apart, with a small suspended bridge and figures between them.",
              "zh": "两座高台分立两侧，中间有悬空小桥和角色。"
            },
            "result": {
              "en": "Source-reported: the article notes the mirror route and the narrow gap between platforms.",
              "zh": "文章摘要：文章提到镜子路线以及两座平台之间的狭窄间隙。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 18; blue ring marks a visible layout landmark in base_jump.",
              "zh": "Low Mirrors 文章第 18 题；蓝色圆环标出 base_jump 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "hyper_jump_2c",
      "articlePuzzleNumber": 19,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 5,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-19-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A pale platform runs below a rectangular central shaft; a small yellow plate sits apart at the far left.",
        "浅色平台位于矩形中央竖井下方；一块黄色踏板独立位于最左侧。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 19 selected layout",
          "zh": "Low Mirrors 文章第 19 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-19.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 19,
            "internalSetPosition": 5,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-19-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "d3eb24e6aff6c2e2b591d6848ca4134874c5083b7ff0111f51583589053fc290",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-19-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "d3eb24e6aff6c2e2b591d6848ca4134874c5083b7ff0111f51583589053fc290",
            "imageSha256": "ce1f644838e9883f0e9544f73753264c2710638bc5887e47009bc2b4a54a8284",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 157,
                  "y": 281
                },
                "rect": [
                  129,
                  253,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "isolated yellow plate at the far left",
                  "zh": "最左侧孤立的黄色踏板"
                }
              }
            ],
            "instruction": {
              "en": "A pale platform runs below a rectangular central shaft; a small yellow plate sits apart at the far left.",
              "zh": "浅色平台位于矩形中央竖井下方；一块黄色踏板独立位于最左侧。"
            },
            "result": {
              "en": "Source-reported: the article emphasizes the central tower as the split between the two sides.",
              "zh": "文章摘要：文章强调中央高塔将区域分成两侧。"
            },
            "alt": {
              "en": "Low Mirrors puzzle 19; blue ring marks isolated yellow plate at the far left.",
              "zh": "Low Mirrors 文章第 19 题；蓝色圆环标出最左侧孤立的黄色踏板。"
            }
          }
        ]
      }
    },
    {
      "levelId": "hyper_jump",
      "articlePuzzleNumber": 20,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 4,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-20-source.webp",
        "cue": "P48; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "One broad tiled platform sits below a raised square with a green plate near its middle.",
        "一块宽阔的铺砖平台位于凸起方台下方，方台中部有绿色踏板。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 20 selected layout",
          "zh": "Low Mirrors 文章第 20 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-20.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 20,
            "internalSetPosition": 4,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-20-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "c362143b9af5a4363efdffceee120cc757396600cb49e09e86401d0814361189",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-20-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "c362143b9af5a4363efdffceee120cc757396600cb49e09e86401d0814361189",
            "imageSha256": "89799af151c5c147a0d6e8c3470d1ed3cc05b6e6e75613c90564e8f761579130",
            "sourceTimeLabel": "Article cue: P48; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 480,
                  "y": 250
                },
                "rect": [
                  452,
                  222,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "central tower between the raised lanes",
                  "zh": "高架通道之间的中央高塔"
                }
              }
            ],
            "instruction": {
              "en": "One broad tiled platform sits below a raised square with a green plate near its middle.",
              "zh": "一块宽阔的铺砖平台位于凸起方台下方，方台中部有绿色踏板。"
            },
            "result": {
              "en": "Source-reported: the article describes using the raised lanes around the tower.",
              "zh": "文章摘要：文章描述了利用高塔周围的高架通道。"
            },
            "alt": {
              "en": "Low Mirrors puzzle 20; blue ring marks central tower between the raised lanes.",
              "zh": "Low Mirrors 文章第 20 题；蓝色圆环标出高架通道之间的中央高塔。"
            }
          }
        ]
      }
    },
    {
      "levelId": "stasis_v2",
      "articlePuzzleNumber": 21,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 24,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P49",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-21-source.webp",
        "cue": "P49; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A long orange platform sits above a lower cluster of green crystals and water.",
        "长条橙色平台位于下方绿色水晶与水域区域之上。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 21 selected layout",
          "zh": "Low Mirrors 文章第 21 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-21.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 21,
            "internalSetPosition": 24,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-21-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "7b0972e37abd3f3207c3b3a819c77f87f2a948c406132c4d31a0ae8a43e98cb9",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-21-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "7b0972e37abd3f3207c3b3a819c77f87f2a948c406132c4d31a0ae8a43e98cb9",
            "imageSha256": "ca48a89f1f454fc285428b99b36cbb9a5ebba7e1075836cf06e314b9eeaa9e4c",
            "sourceTimeLabel": "Article cue: P49; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 490,
                  "y": 250
                },
                "rect": [
                  462,
                  222,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "long orange platform",
                  "zh": "长条橙色平台"
                }
              }
            ],
            "instruction": {
              "en": "A long orange platform sits above a lower cluster of green crystals and water.",
              "zh": "长条橙色平台位于下方绿色水晶与水域区域之上。"
            },
            "result": {
              "en": "Source-reported: the article warns that the X action can also use a carried relic.",
              "zh": "文章摘要：文章提醒，X 操作也会使用携带的遗物。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 21; blue ring marks a visible layout landmark in stasis_v2.",
              "zh": "Low Mirrors 文章第 21 题；蓝色圆环标出 stasis_v2 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "pigeonhole_squished",
      "articlePuzzleNumber": 22,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 16,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P49",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-22-source.webp",
        "cue": "P49; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A tall blue-grey tower rises from the water, with a small green button near its base.",
        "蓝灰色高塔从水面升起，底部附近有一个小绿按钮。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 22 selected layout",
          "zh": "Low Mirrors 文章第 22 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-22.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 22,
            "internalSetPosition": 16,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-22-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "7917eaba7e662987c410654e281d7a8aa87620236f1aafc9f91ada25e1982114",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-22-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "7917eaba7e662987c410654e281d7a8aa87620236f1aafc9f91ada25e1982114",
            "imageSha256": "db0f49b98da8943877c5e12c78bef5599a8ee37814e861b71975f7531ed60117",
            "sourceTimeLabel": "Article cue: P49; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 365,
                  "y": 397
                },
                "rect": [
                  337,
                  369,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "green button below the wall",
                  "zh": "墙体下方的绿色按钮"
                }
              }
            ],
            "instruction": {
              "en": "A tall blue-grey tower rises from the water, with a small green button near its base.",
              "zh": "蓝灰色高塔从水面升起，底部附近有一个小绿按钮。"
            },
            "result": {
              "en": "Source-reported: the article says the Priestess’s route loops around barriers before dropping.",
              "zh": "文章摘要：文章指出，女祭司路线需先绕过障碍，再向下落。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 22; blue ring marks a visible layout landmark in pigeonhole_squished.",
              "zh": "Low Mirrors 文章第 22 题；蓝色圆环标出 pigeonhole_squished 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "far_cl_no_walls_pit",
      "articlePuzzleNumber": 23,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 25,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P49",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-23-source.webp",
        "cue": "P49; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A broad pale platform has two mirrors and a caged Warrior at its left edge.",
        "宽阔的浅色平台上有两面镜子，左侧边缘关着战士。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 23 selected layout",
          "zh": "Low Mirrors 文章第 23 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-23.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 23,
            "internalSetPosition": 25,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-23-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "afc17e0ce80b7595c3165a13c8d76a4fd49ad99dc416bfa3e74c91e7ef45bf26",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-23-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "afc17e0ce80b7595c3165a13c8d76a4fd49ad99dc416bfa3e74c91e7ef45bf26",
            "imageSha256": "a4ea736883160a2855fa1e72aa53346c115793329350ac14563c57f08308d456",
            "sourceTimeLabel": "Article cue: P49; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 550,
                  "y": 198
                },
                "rect": [
                  522,
                  170,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "left mirror on the main platform",
                  "zh": "主平台上的左侧镜子"
                }
              }
            ],
            "instruction": {
              "en": "A broad pale platform has two mirrors and a caged Warrior at its left edge.",
              "zh": "宽阔的浅色平台上有两面镜子，左侧边缘关着战士。"
            },
            "result": {
              "en": "Source-reported: the article describes using a protected Priestess clone to cross.",
              "zh": "文章摘要：文章描述了利用受保护的女祭司克隆穿越。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 23; blue ring marks a visible layout landmark in far_cl_no_walls_pit.",
              "zh": "Low Mirrors 文章第 23 题；蓝色圆环标出 far_cl_no_walls_pit 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "goblin_hat_v2",
      "articlePuzzleNumber": 24,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 15,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P49",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-24-source.webp",
        "cue": "P49; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "Separate gold-topped towers face each other across a deep gap.",
        "两座顶端为金色的高塔隔着深沟相对。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 24 selected layout",
          "zh": "Low Mirrors 文章第 24 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-24.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 24,
            "internalSetPosition": 15,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-24-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "bf247520d58971da94bf8466e7489a2e0c6037bcfde3dff8a539e1c5540ba0dc",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-24-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "bf247520d58971da94bf8466e7489a2e0c6037bcfde3dff8a539e1c5540ba0dc",
            "imageSha256": "7694e05352b9fb4c2a3ee74a4d47a53aa0dadbd431c32466ce7ae89af7ccfb6a",
            "sourceTimeLabel": "Article cue: P49; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 665,
                  "y": 178
                },
                "rect": [
                  637,
                  150,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "mirror on the upper ledge",
                  "zh": "上层平台上的镜子"
                }
              }
            ],
            "instruction": {
              "en": "Separate gold-topped towers face each other across a deep gap.",
              "zh": "两座顶端为金色的高塔隔着深沟相对。"
            },
            "result": {
              "en": "Source-reported: the article describes a mirror and stone transfer between the towers.",
              "zh": "文章摘要：文章描述了在两座高塔之间转移镜子和石头。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 24; blue ring marks a visible layout landmark in goblin_hat_v2.",
              "zh": "Low Mirrors 文章第 24 题；蓝色圆环标出 goblin_hat_v2 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "wrapping_magic_mirror_2",
      "articlePuzzleNumber": 26,
      "levelSet": "underworld_mirrors_and_promesst",
      "levelSetPosition": 2,
      "candidateThemeGroup": "underworld_mirrors_and_promesst",
      "articleCue": {
        "videoPart": "P49",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-26-source.webp",
        "cue": "P49; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "Three grassy and stone islands sit apart over the water, with crystal mirrors between them.",
        "三座草地与石质小岛散布在水面上，水晶镜位于岛屿之间。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 26 selected layout",
          "zh": "Low Mirrors 文章第 26 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-26.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 26,
            "internalSetPosition": 2,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-26-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "666c872633ed3e0ea82e59e30b3f152b150570385fcae00ac65dea39abd2eb0f",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-26-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "666c872633ed3e0ea82e59e30b3f152b150570385fcae00ac65dea39abd2eb0f",
            "imageSha256": "301c0bf2beb24aebf7fc895156d3343d4656a2cc0f5314634bc5a9e0ff35588a",
            "sourceTimeLabel": "Article cue: P49; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 480,
                  "y": 300
                },
                "rect": [
                  452,
                  272,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "central grassy crossing",
                  "zh": "中央草地交汇处"
                }
              }
            ],
            "instruction": {
              "en": "Three grassy and stone islands sit apart over the water, with crystal mirrors between them.",
              "zh": "三座草地与石质小岛散布在水面上，水晶镜位于岛屿之间。"
            },
            "result": {
              "en": "Source-reported: the article says the room wraps around and uses a mirror behind the edge.",
              "zh": "文章摘要：文章指出，房间会环绕，且镜子可从边界后方反射。"
            },
            "alt": {
              "en": "Low Mirrors puzzle 26; blue ring marks central grassy crossing.",
              "zh": "Low Mirrors 文章第 26 题；蓝色圆环标出中央草地交汇处。"
            }
          }
        ]
      }
    },
    {
      "levelId": "double_sided_skip",
      "articlePuzzleNumber": 27,
      "levelSet": "underworld_mirrors_and_promesst",
      "levelSetPosition": 3,
      "candidateThemeGroup": "underworld_mirrors_and_promesst",
      "articleCue": {
        "videoPart": "P49",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-27-source.webp",
        "cue": "P49; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A small square island has a mirror at its upper-left corner, with a lily-pad lane and plate on each side.",
        "一座小方岛的左上角有一面镜子，两侧各有一条睡莲垫通道和踏板。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 27 selected layout",
          "zh": "Low Mirrors 文章第 27 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-27.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 27,
            "internalSetPosition": 3,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-27-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "d9eb8dbd0879f331bd68c249f2ec54c0ab85b03bc0e75d8909f182ddf9be99b5",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-27-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "d9eb8dbd0879f331bd68c249f2ec54c0ab85b03bc0e75d8909f182ddf9be99b5",
            "imageSha256": "9ef89305f03e1c61ccccf862f1f8d8d89d49ba524dd0b364ff507a7f9051b3ad",
            "sourceTimeLabel": "Article cue: P49; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 480,
                  "y": 270
                },
                "rect": [
                  452,
                  242,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "small central square island",
                  "zh": "中央小方岛"
                }
              }
            ],
            "instruction": {
              "en": "A small square island has a mirror at its upper-left corner, with a lily-pad lane and plate on each side.",
              "zh": "一座小方岛的左上角有一面镜子，两侧各有一条睡莲垫通道和踏板。"
            },
            "result": {
              "en": "Source-reported: the article describes copies meeting at one destination and merging.",
              "zh": "文章摘要：文章描述了多个复制体抵达同一地点并合并。"
            },
            "alt": {
              "en": "Low Mirrors puzzle 27; blue ring marks small central square island.",
              "zh": "Low Mirrors 文章第 27 题；蓝色圆环标出中央小方岛。"
            }
          }
        ]
      }
    },
    {
      "levelId": "army_v5",
      "articlePuzzleNumber": 28,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 2,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P49",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-28-source.webp",
        "cue": "P49; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "Orange-robed figures stand among yellow plates on a pale square platform.",
        "橙袍角色站在浅色方形平台上的黄色踏板之间。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 28 selected layout",
          "zh": "Low Mirrors 文章第 28 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-28.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 28,
            "internalSetPosition": 2,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-28-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "409ee9dc4bce65eca35b594cf620551fb06514d2aa54699e274cb6e7e2f4b836",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-28-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "409ee9dc4bce65eca35b594cf620551fb06514d2aa54699e274cb6e7e2f4b836",
            "imageSha256": "1eedf504188c18c378d3002fcfd1bc3529f900775577f2b9d831db5022e1668e",
            "sourceTimeLabel": "Article cue: P49; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 757,
                  "y": 74
                },
                "rect": [
                  729,
                  46,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "raised yellow plate at the upper right",
                  "zh": "右上方的凸起黄色踏板"
                }
              }
            ],
            "instruction": {
              "en": "Orange-robed figures stand among yellow plates on a pale square platform.",
              "zh": "橙袍角色站在浅色方形平台上的黄色踏板之间。"
            },
            "result": {
              "en": "Source-reported: the article says a crystal first fills the landing hole for the Thief.",
              "zh": "文章摘要：文章指出，需先用水晶填上盗贼落点处的空缺。"
            },
            "alt": {
              "en": "Low Mirrors puzzle 28; blue ring marks raised yellow plate at the upper right.",
              "zh": "Low Mirrors 文章第 28 题；蓝色圆环标出右上方的凸起黄色踏板。"
            }
          }
        ]
      }
    },
    {
      "levelId": "mega_clone_v2",
      "articlePuzzleNumber": 29,
      "levelSet": "underworld_mirrors_and_promesst",
      "levelSetPosition": 5,
      "candidateThemeGroup": "underworld_mirrors_and_promesst",
      "articleCue": {
        "videoPart": "P49",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-29-source.webp",
        "cue": "P49; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A multi-level grid of platforms rises toward a frame of mirrors at the top.",
        "多层网格平台向上延伸，通往顶部的镜子框架。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 29 selected layout",
          "zh": "Low Mirrors 文章第 29 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-29.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 29,
            "internalSetPosition": 5,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-29-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "a0ce47c8f54542b73225763a08d3188d5d3823fcab09caf06df6bb965e445e33",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-29-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "a0ce47c8f54542b73225763a08d3188d5d3823fcab09caf06df6bb965e445e33",
            "imageSha256": "90179327c97cd94535f59011faaf1ca3092a8b543f59a453e69ef40629de57b2",
            "sourceTimeLabel": "Article cue: P49; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 500,
                  "y": 95
                },
                "rect": [
                  472,
                  67,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "upper mirror frame",
                  "zh": "上方镜子框架"
                }
              }
            ],
            "instruction": {
              "en": "A multi-level grid of platforms rises toward a frame of mirrors at the top.",
              "zh": "多层网格平台向上延伸，通往顶部的镜子框架。"
            },
            "result": {
              "en": "Source-reported: the article describes one reflection creating six copies toward six exits.",
              "zh": "文章摘要：文章描述了一次反射生成六个复制体，分别前往六个出口。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 29; blue ring marks a visible layout landmark in mega_clone_v2.",
              "zh": "Low Mirrors 文章第 29 题；蓝色圆环标出 mega_clone_v2 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "mega_merge_v5",
      "articlePuzzleNumber": 30,
      "levelSet": "underworld_mirrors_and_promesst",
      "levelSetPosition": 6,
      "candidateThemeGroup": "underworld_mirrors_and_promesst",
      "articleCue": {
        "videoPart": "P49",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-30-source.webp",
        "cue": "P49; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "Two separated grid platforms face one another; small mirror pieces mark their edges.",
        "两块分离的网格平台相对，边缘附近有小镜子组件。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 30 selected layout",
          "zh": "Low Mirrors 文章第 30 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-30.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 30,
            "internalSetPosition": 6,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-30-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "c58feb93351ce98bfc75ea423dd2c61f03e9ba7d3d3695f4583c7a99e349cbdc",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-30-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "c58feb93351ce98bfc75ea423dd2c61f03e9ba7d3d3695f4583c7a99e349cbdc",
            "imageSha256": "51dc88eccf2b701ec577e6d13a735ac75280ef46678f55e0bf59e0a23d8dcf91",
            "sourceTimeLabel": "Article cue: P49; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 480,
                  "y": 400
                },
                "rect": [
                  452,
                  372,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "lower tiled platform",
                  "zh": "下方铺砖平台"
                }
              }
            ],
            "instruction": {
              "en": "Two separated grid platforms face one another; small mirror pieces mark their edges.",
              "zh": "两块分离的网格平台相对，边缘附近有小镜子组件。"
            },
            "result": {
              "en": "Source-reported: the article describes a multi-part room where board sections connect through reflections.",
              "zh": "文章摘要：文章描述了一个由多个区域组成、通过反射连接的房间。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 30; blue ring marks a visible layout landmark in mega_merge_v5.",
              "zh": "Low Mirrors 文章第 30 题；蓝色圆环标出 mega_merge_v5 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "3wcn_purple_goblin",
      "articlePuzzleNumber": 32,
      "levelSet": "underworld_mirrors_and_promesst",
      "levelSetPosition": 19,
      "candidateThemeGroup": "underworld_mirrors_and_promesst",
      "articleCue": {
        "videoPart": "P49",
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "file": "/evidence/low-mirrors-puzzle-32-source.webp",
        "cue": "P49; article cue only, exact PTS unknown",
        "exactPtsKnown": false
      },
      "instruction": [
        "A pink room is ringed by purple hedges, crossed by beams, and dotted with goblins.",
        "粉色房间四周围着紫色树篱，光束横穿其间，场上散布着哥布林。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 32 selected layout",
          "zh": "Low Mirrors 文章第 32 题选定布局"
        },
        "opening": {
          "en": "Blue ring identifies a visible board landmark; it is not an action step.",
          "zh": "蓝色圆环标出可见的棋盘地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-32.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 32,
            "internalSetPosition": 19,
            "sourceFrameFile": "/evidence/low-mirrors-puzzle-32-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "5236668c6308c1b683ce79f1993357a2bff89f345fcfb13f79e00e5207a143b3",
            "displaySourceFile": "/evidence/low-mirrors-puzzle-32-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "5236668c6308c1b683ce79f1993357a2bff89f345fcfb13f79e00e5207a143b3",
            "imageSha256": "fa2a5f1160f3f6ef11a491ac7e766d8e9b327b7db6d9c34688b9ae19599a6964",
            "sourceTimeLabel": "Article cue: P49; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 44,
                  "purpose": "bilibili-watermark",
                  "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 44,
                "purpose": "bilibili-watermark",
                "reason": "Watermark sits in empty scenery margin outside the playable board in this selected still."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "1",
                "color": "#168bd2",
                "center": {
                  "x": 616,
                  "y": 276
                },
                "rect": [
                  588,
                  248,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "angled mirror in the beam lane",
                  "zh": "光束通道中的倾斜镜子"
                }
              }
            ],
            "instruction": {
              "en": "A pink room is ringed by purple hedges, crossed by beams, and dotted with goblins.",
              "zh": "粉色房间四周围着紫色树篱，光束横穿其间，场上散布着哥布林。"
            },
            "result": {
              "en": "Source-reported: the article says the bottom-left goblin prevents a triple kill, so the room uses paired kills and a merge.",
              "zh": "文章摘要：文章指出，左下角哥布林使三连击无法实现，因此要分组击杀并合并。"
            },
            "alt": {
              "en": "Low Mirrors article puzzle 32; blue ring marks a visible layout landmark in 3wcn_purple_goblin.",
              "zh": "Low Mirrors 文章第 32 题；蓝色圆环标出 3wcn_purple_goblin 中可见的布局地标。"
            }
          }
        ]
      }
    },
    {
      "levelId": "wrapping_mirror0",
      "articlePuzzleNumber": 12,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 7,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "articleStill": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "url": "https://sinkingstarwalkthrough.com/img/low/low-mirrors/puzzle-12.webp",
        "section": "Puzzle 12",
        "file": "/evidence/low-mirrors-puzzle-12-source.webp",
        "sha256": "e5a9a7d7f3dedca342061f1da17edfa6bc7647ce55d3f57f00b8246107253b17"
      },
      "displaySource": {
        "sourceId": "bilibili-part-49-selected-encoding-2026-10-24",
        "file": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/wrapping_mirror0-part49-selected.jpg",
        "cue": "Selected source video detail; raw timing is retained in evidence.",
        "exactPtsKnown": false,
        "sha256": "7575644916d93990bf0b038e5743f6975bd63aa81a11e2c03cd53d7e8286423a"
      },
      "instruction": [
        "Reflections can cross the room edges.",
        "反射可以跨过房间边界。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 12 selected view",
          "zh": "Low Mirrors文章第12题选定画面"
        },
        "opening": {
          "en": "Selected detail of the repeating room view.",
          "zh": "环绕房间重复画面的选定细节。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-12-selected-video.svg",
            "width": 852,
            "height": 420,
            "sourceFrameFile": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/wrapping_mirror0-part49-selected.jpg",
            "sourceFrameFormat": "image/jpeg",
            "sourceFrameSha256": "7575644916d93990bf0b038e5743f6975bd63aa81a11e2c03cd53d7e8286423a",
            "displaySourceFile": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/wrapping_mirror0-part49-selected.jpg",
            "displayFrameFormat": "image/jpeg",
            "displayFrameSha256": "7575644916d93990bf0b038e5743f6975bd63aa81a11e2c03cd53d7e8286423a",
            "imageSha256": "13596562ba8a5ee6cafa51af565f88d2b911c97bab03f181441924c45d5b8fcc",
            "sourceCue": "Selected source-video frame; exact source timing is retained in evidence.",
            "displayMasks": [],
            "markers": [
              {
                "type": "layout-reference",
                "color": "#31bfff",
                "center": {
                  "x": 495,
                  "y": 185
                },
                "radius": 16,
                "target": {
                  "en": "The right button of the green pair.",
                  "zh": "一对绿色按钮中的右侧按钮。"
                }
              }
            ],
            "alt": {
              "en": "Low Mirrors article puzzle 12 selected view; ring marks The right button of the green pair.",
              "zh": "Low Mirrors文章第12题选定画面；圆环标出一对绿色按钮中的右侧按钮。"
            },
            "instruction": {
              "en": "Reflections can cross the room edges.",
              "zh": "反射可以跨过房间边界。"
            },
            "result": {
              "en": "Ring marks The right button of the green pair.",
              "zh": "圆环标出一对绿色按钮中的右侧按钮。"
            },
            "crop": {
              "x": 0,
              "y": 50,
              "width": 852,
              "height": 420,
              "excludedRects": []
            },
            "displayType": "cropped-selected-detail",
            "articlePuzzleNumber": 12,
            "internalSetPosition": 7
          }
        ]
      }
    },
    {
      "levelId": "wrapping_mirror0_relatively_prime",
      "articlePuzzleNumber": 13,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 8,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "articleStill": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "url": "https://sinkingstarwalkthrough.com/img/low/low-mirrors/puzzle-13.webp",
        "section": "Puzzle 13",
        "file": "/evidence/low-mirrors-puzzle-13-source.webp",
        "sha256": "a563e56eaa77bcd6b6429db5bcac2e82c52817c3799dd4a2edf21b74be24ebc6"
      },
      "displaySource": {
        "sourceId": "bilibili-part-49-selected-encoding-2026-10-24",
        "file": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/wrapping_mirror0_relatively_prime-part49-selected.jpg",
        "cue": "Selected source video detail; raw timing is retained in evidence.",
        "exactPtsKnown": false,
        "sha256": "c45d7ba43e044cde506979c0a3ace92a66e3feb0accd6cb198d6f7cf8351e6fd"
      },
      "instruction": [
        "Check where a reflection wraps across the edge.",
        "留意反射从边界绕回的位置。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 13 selected view",
          "zh": "Low Mirrors文章第13题选定画面"
        },
        "opening": {
          "en": "Selected detail of the repeating room view.",
          "zh": "环绕房间重复画面的选定细节。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-13-selected-video.svg",
            "width": 852,
            "height": 420,
            "sourceFrameFile": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/wrapping_mirror0_relatively_prime-part49-selected.jpg",
            "sourceFrameFormat": "image/jpeg",
            "sourceFrameSha256": "c45d7ba43e044cde506979c0a3ace92a66e3feb0accd6cb198d6f7cf8351e6fd",
            "displaySourceFile": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/wrapping_mirror0_relatively_prime-part49-selected.jpg",
            "displayFrameFormat": "image/jpeg",
            "displayFrameSha256": "c45d7ba43e044cde506979c0a3ace92a66e3feb0accd6cb198d6f7cf8351e6fd",
            "imageSha256": "16f31bca127dac19aba4db2203dc9d157293f0e7b2176ceb71124ec801fa8160",
            "sourceCue": "Selected source-video frame; exact source timing is retained in evidence.",
            "displayMasks": [],
            "markers": [
              {
                "type": "layout-reference",
                "color": "#31bfff",
                "center": {
                  "x": 492,
                  "y": 243
                },
                "radius": 16,
                "target": {
                  "en": "The single green button beside the green gate.",
                  "zh": "绿色界门旁的单个绿色按钮。"
                }
              }
            ],
            "alt": {
              "en": "Low Mirrors article puzzle 13 selected view; ring marks The single green button beside the green gate.",
              "zh": "Low Mirrors文章第13题选定画面；圆环标出绿色界门旁的单个绿色按钮。"
            },
            "instruction": {
              "en": "Check where a reflection wraps across the edge.",
              "zh": "留意反射从边界绕回的位置。"
            },
            "result": {
              "en": "Ring marks The single green button beside the green gate.",
              "zh": "圆环标出绿色界门旁的单个绿色按钮。"
            },
            "crop": {
              "x": 0,
              "y": 50,
              "width": 852,
              "height": 420,
              "excludedRects": []
            },
            "displayType": "cropped-selected-detail",
            "articlePuzzleNumber": 13,
            "internalSetPosition": 8
          }
        ]
      }
    },
    {
      "levelId": "the_line_must_be_drawn_HERE",
      "articlePuzzleNumber": 14,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 9,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "articleStill": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "url": "https://sinkingstarwalkthrough.com/img/low/low-mirrors/puzzle-14.webp",
        "section": "Puzzle 14",
        "file": "/evidence/low-mirrors-puzzle-14-source.webp",
        "sha256": "b64f56e7a9c47f27f90c79ceeb0f5bf43c1fa40423db1c9b670650ab4b2c0aff"
      },
      "displaySource": {
        "sourceId": "bilibili-part-49-selected-encoding-2026-10-24",
        "file": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/the_line_must_be_drawn_HERE-part49-selected.jpg",
        "cue": "Selected source video detail; raw timing is retained in evidence.",
        "exactPtsKnown": false,
        "sha256": "d9c153e7194ed96189c67935b777641576c9f4d77be92728d936228d8e6ec1a3"
      },
      "instruction": [
        "Track the repeating colored lanes.",
        "沿重复的彩色通道追踪位置。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 14 selected view",
          "zh": "Low Mirrors文章第14题选定画面"
        },
        "opening": {
          "en": "Selected detail of the repeating room view.",
          "zh": "环绕房间重复画面的选定细节。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-14-selected-video.svg",
            "width": 852,
            "height": 420,
            "sourceFrameFile": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/the_line_must_be_drawn_HERE-part49-selected.jpg",
            "sourceFrameFormat": "image/jpeg",
            "sourceFrameSha256": "d9c153e7194ed96189c67935b777641576c9f4d77be92728d936228d8e6ec1a3",
            "displaySourceFile": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/the_line_must_be_drawn_HERE-part49-selected.jpg",
            "displayFrameFormat": "image/jpeg",
            "displayFrameSha256": "d9c153e7194ed96189c67935b777641576c9f4d77be92728d936228d8e6ec1a3",
            "imageSha256": "311a23a8c34716f8570e57e9d61e1d963d5c5429f5b2e191a7609a1775cba772",
            "sourceCue": "Selected source-video frame; exact source timing is retained in evidence.",
            "displayMasks": [],
            "markers": [
              {
                "type": "layout-reference",
                "color": "#31bfff",
                "center": {
                  "x": 393,
                  "y": 281
                },
                "radius": 16,
                "target": {
                  "en": "The green mirror in the central lane.",
                  "zh": "中央通道里的绿色镜子。"
                }
              }
            ],
            "alt": {
              "en": "Low Mirrors article puzzle 14 selected view; ring marks The green mirror in the central lane.",
              "zh": "Low Mirrors文章第14题选定画面；圆环标出中央通道里的绿色镜子。"
            },
            "instruction": {
              "en": "Track the repeating colored lanes.",
              "zh": "沿重复的彩色通道追踪位置。"
            },
            "result": {
              "en": "Ring marks The green mirror in the central lane.",
              "zh": "圆环标出中央通道里的绿色镜子。"
            },
            "crop": {
              "x": 0,
              "y": 50,
              "width": 852,
              "height": 420,
              "excludedRects": []
            },
            "displayType": "cropped-selected-detail",
            "articlePuzzleNumber": 14,
            "internalSetPosition": 9
          }
        ]
      }
    },
    {
      "levelId": "wrapping_mirror_alt",
      "articlePuzzleNumber": 17,
      "levelSet": "underworld_heroes_and_mirrors",
      "levelSetPosition": 10,
      "candidateThemeGroup": "underworld_heroes_and_mirrors",
      "articleCue": {
        "videoPart": "P48",
        "time": null,
        "exactPtsKnown": false
      },
      "articleStill": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "url": "https://sinkingstarwalkthrough.com/img/low/low-mirrors/puzzle-17.webp",
        "section": "Puzzle 17",
        "file": "/evidence/low-mirrors-puzzle-17-source.webp",
        "sha256": "eb21df3cfe0c37e10a16727323d3ef8a70bc7f9c98ca1dab5e77c26f077eca54"
      },
      "displaySource": {
        "sourceId": "bilibili-part-49-selected-encoding-2026-10-24",
        "file": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/wrapping_mirror_alt-part49-selected.jpg",
        "cue": "Selected source video detail; raw timing is retained in evidence.",
        "exactPtsKnown": false,
        "sha256": "7da225ff7a5832d22c55f807a1c8094c8bcd2c2d30412a6fd2ca09f0cb9951c1"
      },
      "instruction": [
        "Check how the crystal mirror reflects upward.",
        "留意水晶镜向上自我反射的方式。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 17 selected view",
          "zh": "Low Mirrors文章第17题选定画面"
        },
        "opening": {
          "en": "Selected detail of the repeating room view.",
          "zh": "环绕房间重复画面的选定细节。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-17-selected-video.svg",
            "width": 852,
            "height": 420,
            "sourceFrameFile": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/wrapping_mirror_alt-part49-selected.jpg",
            "sourceFrameFormat": "image/jpeg",
            "sourceFrameSha256": "7da225ff7a5832d22c55f807a1c8094c8bcd2c2d30412a6fd2ca09f0cb9951c1",
            "displaySourceFile": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/wrapping_mirror_alt-part49-selected.jpg",
            "displayFrameFormat": "image/jpeg",
            "displayFrameSha256": "7da225ff7a5832d22c55f807a1c8094c8bcd2c2d30412a6fd2ca09f0cb9951c1",
            "imageSha256": "3c266e5efdabcfb983008015374c5ead00ff7b5aef4d09f4a9be1085b8ae5260",
            "sourceCue": "Selected source-video frame; exact source timing is retained in evidence.",
            "displayMasks": [],
            "markers": [
              {
                "type": "layout-reference",
                "color": "#31bfff",
                "center": {
                  "x": 314,
                  "y": 276
                },
                "radius": 16,
                "target": {
                  "en": "The blue gate beside the dark stone.",
                  "zh": "暗色石头旁的蓝色界门。"
                }
              }
            ],
            "alt": {
              "en": "Low Mirrors article puzzle 17 selected view; ring marks The blue gate beside the dark stone.",
              "zh": "Low Mirrors文章第17题选定画面；圆环标出暗色石头旁的蓝色界门。"
            },
            "instruction": {
              "en": "Check how the crystal mirror reflects upward.",
              "zh": "留意水晶镜向上自我反射的方式。"
            },
            "result": {
              "en": "Ring marks The blue gate beside the dark stone.",
              "zh": "圆环标出暗色石头旁的蓝色界门。"
            },
            "crop": {
              "x": 0,
              "y": 50,
              "width": 852,
              "height": 420,
              "excludedRects": []
            },
            "displayType": "cropped-selected-detail",
            "articlePuzzleNumber": 17,
            "internalSetPosition": 10
          }
        ]
      }
    },
    {
      "levelId": "torus_mirrors",
      "articlePuzzleNumber": 25,
      "levelSet": "underworld_mirrors_and_promesst",
      "levelSetPosition": 1,
      "candidateThemeGroup": "underworld_mirrors_and_promesst",
      "articleCue": {
        "videoPart": "P49",
        "time": null,
        "exactPtsKnown": false
      },
      "articleStill": {
        "sourceId": "sinkingstarwalkthrough-low-mirrors",
        "url": "https://sinkingstarwalkthrough.com/img/low/low-mirrors/puzzle-25.webp",
        "section": "Puzzle 25",
        "file": "/evidence/low-mirrors-puzzle-25-source.webp",
        "sha256": "5d34ffccdc89fdb467c17239636102c05c74ce9b99f58888ba04260ac9c764a9"
      },
      "displaySource": {
        "sourceId": "bilibili-part-50-selected-encoding-2026-10-24",
        "file": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/torus_mirrors-part50-selected.jpg",
        "cue": "Selected source video detail; raw timing is retained in evidence.",
        "exactPtsKnown": false,
        "sha256": "0183ff4b691b8228983c9ce79246283f18bdd447ff4ac7518425a265cb2fb05e"
      },
      "instruction": [
        "Account for both pairs of mirrors.",
        "同时考虑两组镜子。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Mirrors article puzzle 25 selected view",
          "zh": "Low Mirrors文章第25题选定画面"
        },
        "opening": {
          "en": "Selected detail of the repeating room view.",
          "zh": "环绕房间重复画面的选定细节。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-mirrors/puzzle-25-selected-video.svg",
            "width": 852,
            "height": 420,
            "sourceFrameFile": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/torus_mirrors-part50-selected.jpg",
            "sourceFrameFormat": "image/jpeg",
            "sourceFrameSha256": "0183ff4b691b8228983c9ce79246283f18bdd447ff4ac7518425a265cb2fb05e",
            "displaySourceFile": "/evidence/twelve-plus-three-video-source-frames-2026-10-24/torus_mirrors-part50-selected.jpg",
            "displayFrameFormat": "image/jpeg",
            "displayFrameSha256": "0183ff4b691b8228983c9ce79246283f18bdd447ff4ac7518425a265cb2fb05e",
            "imageSha256": "747676678aa31a7e608d8883f0545c4fbd65ea189fab94793128e850ba7b9888",
            "sourceCue": "Selected source-video frame; exact source timing is retained in evidence.",
            "displayMasks": [],
            "markers": [
              {
                "type": "layout-reference",
                "color": "#31bfff",
                "center": {
                  "x": 463,
                  "y": 115
                },
                "radius": 16,
                "target": {
                  "en": "The left mirror of the upper pair.",
                  "zh": "上方一对镜子中的左镜。"
                }
              }
            ],
            "alt": {
              "en": "Low Mirrors article puzzle 25 selected view; ring marks The left mirror of the upper pair.",
              "zh": "Low Mirrors文章第25题选定画面；圆环标出上方一对镜子中的左镜。"
            },
            "instruction": {
              "en": "Account for both pairs of mirrors.",
              "zh": "同时考虑两组镜子。"
            },
            "result": {
              "en": "Ring marks The left mirror of the upper pair.",
              "zh": "圆环标出上方一对镜子中的左镜。"
            },
            "crop": {
              "x": 0,
              "y": 50,
              "width": 852,
              "height": 420,
              "excludedRects": []
            },
            "displayType": "cropped-selected-detail",
            "articlePuzzleNumber": 25,
            "internalSetPosition": 1
          }
        ]
      }
    }
  ],
  "displayCoverageSourceId": "twelve-plus-three-display-coverage-delta",
  "displayCoverageRevision": "twelve-plus-three-display-coverage-delta-2026-10-24"
}