{
  "game": "Order of the Sinking Star",
  "revision": "low-skipping-stones-selected-layouts-2026-10-24-remaining29-display-upgrades-2026-10-25",
  "sourceId": "low-skipping-stones-candidate-classification",
  "article": {
    "sourceId": "low-skipping-stones-article",
    "url": "https://sinkingstarwalkthrough.com/low-skipping-stones-solutions/",
    "pageSlug": "low-skipping-stones-solutions",
    "pageHtmlSha256": "9ab4f8d0b1a35620b06209d2af7397475ea85ad57e92af3a76842f1b6b24ceb9"
  },
  "counts": {
    "approvedArticlePairs": 18,
    "boardCards": 18,
    "textOnly": 0,
    "articleRoomPuzzleCount": 19,
    "unassignedArticleRoomStills": 1,
    "separateOverworldStillCount": 6,
    "unresolvedOverworldTargetScenes": 6
  },
  "limitations": {
    "articleReportedHints": true,
    "independentGameplayReplay": false,
    "selectedStateOnly": true,
    "exactPtsKnown": false,
    "finishClaimed": false,
    "steamDepotMapping": "unverified"
  },
  "cards": [
    {
      "levelId": "raft_corners_alt_3",
      "articlePuzzleNumber": 2,
      "levelSet": "underworld_lilies",
      "levelSetPosition": 2,
      "candidateThemeGroup": "underworld_lilies",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-002-source.webp",
        "cue": "Article puzzle 2; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Time two stones onto separate lily pads.",
        "把握时机，让两块石头分别上浮叶。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 2 selected layout",
          "zh": "低层跳石 文章第 2 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-002.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 2,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-002-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "b681cb9f8fefa3e0a1910c129b2f8af82abfc4ce9bf7141cb6506ec581cc720a",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-002-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "b681cb9f8fefa3e0a1910c129b2f8af82abfc4ce9bf7141cb6506ec581cc720a",
            "imageSha256": "57866cbf1674b3aa74e402a38349bcd7f250fcddd970f4f7f8ad87277cb41c8d",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "2",
                "color": "#168bd2",
                "center": {
                  "x": 350,
                  "y": 171
                },
                "rect": [
                  322,
                  143,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "yellow block inside the left loop",
                  "zh": "左侧环道内的黄色方块"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 2, selected layout; ring marks yellow block inside the left loop.",
              "zh": "低层跳石 文章第 2 题选定布局；圆环标出左侧环道内的黄色方块。"
            },
            "instruction": {
              "en": "Time two stones onto separate lily pads.",
              "zh": "把握时机，让两块石头分别上浮叶。"
            },
            "result": {
              "en": "Ring marks yellow block inside the left loop.",
              "zh": "圆环标出左侧环道内的黄色方块。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 2; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "raft_corners_2_small",
      "articlePuzzleNumber": 3,
      "levelSet": "underworld_lilies",
      "levelSetPosition": 3,
      "candidateThemeGroup": "underworld_lilies",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-003-source.webp",
        "cue": "Article puzzle 3; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Ride over, press the button, and return.",
        "乘叶过去压下按钮，再乘叶返回。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 3 selected layout",
          "zh": "低层跳石 文章第 3 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-003.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 3,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-003-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "5d04e99c61f5da715c61561dfe690a0766932906e4d8ffe8ded90e08827eb261",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-003-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "5d04e99c61f5da715c61561dfe690a0766932906e4d8ffe8ded90e08827eb261",
            "imageSha256": "838fba850d526434b0fcd97a6290787dc87533dfc147be1fa08692f88adf5c7b",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "3",
                "color": "#168bd2",
                "center": {
                  "x": 327,
                  "y": 147
                },
                "rect": [
                  299,
                  119,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "yellow block above the middle raft",
                  "zh": "中间木筏上方的黄色方块"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 3, selected layout; ring marks yellow block above the middle raft.",
              "zh": "低层跳石 文章第 3 题选定布局；圆环标出中间木筏上方的黄色方块。"
            },
            "instruction": {
              "en": "Ride over, press the button, and return.",
              "zh": "乘叶过去压下按钮，再乘叶返回。"
            },
            "result": {
              "en": "Ring marks yellow block above the middle raft.",
              "zh": "圆环标出中间木筏上方的黄色方块。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 3; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "raft_corners_4x4",
      "articlePuzzleNumber": 4,
      "levelSet": "underworld_lilies",
      "levelSetPosition": 4,
      "candidateThemeGroup": "underworld_lilies",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-004-source.webp",
        "cue": "Article puzzle 4; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Carry one stone around to block the dragon.",
        "绕行运送石块，挡住龙的火线。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 4 selected layout",
          "zh": "低层跳石 文章第 4 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-004.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 4,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-004-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "6097e4fbfae4b0c90552690fe184b342e709793ee445e51ead2cd2d6018341a8",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-004-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "6097e4fbfae4b0c90552690fe184b342e709793ee445e51ead2cd2d6018341a8",
            "imageSha256": "865068e3e53360f882a03ff6e0061ea427be42077a0b79e852e397b347a0e7c7",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "4",
                "color": "#168bd2",
                "center": {
                  "x": 421,
                  "y": 320
                },
                "rect": [
                  393,
                  292,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "green lily pad cluster at the center",
                  "zh": "中央的绿色睡莲垫群"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 4, selected layout; ring marks green lily pad cluster at the center.",
              "zh": "低层跳石 文章第 4 题选定布局；圆环标出中央的绿色睡莲垫群。"
            },
            "instruction": {
              "en": "Carry one stone around to block the dragon.",
              "zh": "绕行运送石块，挡住龙的火线。"
            },
            "result": {
              "en": "Ring marks green lily pad cluster at the center.",
              "zh": "圆环标出中央的绿色睡莲垫群。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 4; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "mirror_u",
      "articlePuzzleNumber": 5,
      "levelSet": "lily_rotation",
      "levelSetPosition": 1,
      "candidateThemeGroup": "lily_rotation",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-005-source.webp",
        "cue": "Article puzzle 5; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "A carried mirror turns with each current bend.",
        "浮叶转弯时，载着的镜子也会转向。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 5 selected layout",
          "zh": "低层跳石 文章第 5 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-005.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 5,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-005-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "4460d18784c96b74fd68d10715930c7b28aab56fc41a6ccba4ab88749c6109ca",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-005-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "4460d18784c96b74fd68d10715930c7b28aab56fc41a6ccba4ab88749c6109ca",
            "imageSha256": "a8ecdfe4def81f99168b9d379feef4b301411f37264256440ba0915a3e201d19",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
                },
                {
                  "x": 0,
                  "y": 520,
                  "width": 52,
                  "height": 14,
                  "purpose": "fps-counter",
                  "reason": "Lower-left FPS counter on scenery margin."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
              },
              {
                "x": 0,
                "y": 520,
                "width": 52,
                "height": 14,
                "purpose": "fps-counter",
                "reason": "Lower-left FPS counter on scenery margin."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "5",
                "color": "#168bd2",
                "center": {
                  "x": 478,
                  "y": 399
                },
                "rect": [
                  450,
                  371,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "tilted mirror on the lower island",
                  "zh": "下方小岛上的倾斜镜子"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 5, selected layout; ring marks tilted mirror on the lower island.",
              "zh": "低层跳石 文章第 5 题选定布局；圆环标出下方小岛上的倾斜镜子。"
            },
            "instruction": {
              "en": "A carried mirror turns with each current bend.",
              "zh": "浮叶转弯时，载着的镜子也会转向。"
            },
            "result": {
              "en": "Ring marks tilted mirror on the lower island.",
              "zh": "圆环标出下方小岛上的倾斜镜子。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 5; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "mirror_flip_donut",
      "articlePuzzleNumber": 6,
      "levelSet": "lily_rotation",
      "levelSetPosition": 2,
      "candidateThemeGroup": "lily_rotation",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-006-source.webp",
        "cue": "Article puzzle 6; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Stop the pad at both corners to turn the mirror.",
        "在两个转角拦住浮叶，让镜子翻转。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 6 selected layout",
          "zh": "低层跳石 文章第 6 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-006.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 6,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-006-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "62790097802a19beeb897dcc80c3b0d8ebee22f0c2de263051cfdb825e42d95a",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-006-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "62790097802a19beeb897dcc80c3b0d8ebee22f0c2de263051cfdb825e42d95a",
            "imageSha256": "d1a9b7a965d6487ad5b6b9c283fe3dbeb86cf7f915f3fabc3791ce63085153a5",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
                },
                {
                  "x": 0,
                  "y": 520,
                  "width": 52,
                  "height": 14,
                  "purpose": "fps-counter",
                  "reason": "Lower-left FPS counter on scenery margin."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
              },
              {
                "x": 0,
                "y": 520,
                "width": 52,
                "height": 14,
                "purpose": "fps-counter",
                "reason": "Lower-left FPS counter on scenery margin."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "6",
                "color": "#168bd2",
                "center": {
                  "x": 478,
                  "y": 243
                },
                "rect": [
                  450,
                  215,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "yellow pad inside the square pool",
                  "zh": "方形水池内的黄色垫"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 6, selected layout; ring marks yellow pad inside the square pool.",
              "zh": "低层跳石 文章第 6 题选定布局；圆环标出方形水池内的黄色垫。"
            },
            "instruction": {
              "en": "Stop the pad at both corners to turn the mirror.",
              "zh": "在两个转角拦住浮叶，让镜子翻转。"
            },
            "result": {
              "en": "Ring marks yellow pad inside the square pool.",
              "zh": "圆环标出方形水池内的黄色垫。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 6; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "in_a_flash_alt",
      "articlePuzzleNumber": 7,
      "levelSet": "lily_rotation",
      "levelSetPosition": 3,
      "candidateThemeGroup": "lily_rotation",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-007-source.webp",
        "cue": "Article puzzle 7; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Dam the current for a second mirror turn.",
        "筑坝让水流多带镜子转一次。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 7 selected layout",
          "zh": "低层跳石 文章第 7 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-007.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 7,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-007-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "e2d1f31266daf54016faeba652006355cb52ae640816df23eda83fc5dbdeddd5",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-007-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "e2d1f31266daf54016faeba652006355cb52ae640816df23eda83fc5dbdeddd5",
            "imageSha256": "82badf83df1fbaba744803b05eab05d7e08acbca4908cde30c236e060cd14681",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
                },
                {
                  "x": 0,
                  "y": 520,
                  "width": 52,
                  "height": 14,
                  "purpose": "fps-counter",
                  "reason": "Lower-left FPS counter on scenery margin."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
              },
              {
                "x": 0,
                "y": 520,
                "width": 52,
                "height": 14,
                "purpose": "fps-counter",
                "reason": "Lower-left FPS counter on scenery margin."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "7",
                "color": "#168bd2",
                "center": {
                  "x": 378,
                  "y": 241
                },
                "rect": [
                  350,
                  213,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "purple stone on the orange ledge",
                  "zh": "橙色平台上的紫色石头"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 7, selected layout; ring marks purple stone on the orange ledge.",
              "zh": "低层跳石 文章第 7 题选定布局；圆环标出橙色平台上的紫色石头。"
            },
            "instruction": {
              "en": "Dam the current for a second mirror turn.",
              "zh": "筑坝让水流多带镜子转一次。"
            },
            "result": {
              "en": "Ring marks purple stone on the orange ledge.",
              "zh": "圆环标出橙色平台上的紫色石头。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 7; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "in_a_flash_alt_back",
      "articlePuzzleNumber": 8,
      "levelSet": "lily_rotation",
      "levelSetPosition": 4,
      "candidateThemeGroup": "lily_rotation",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-008-source.webp",
        "cue": "Article puzzle 8; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Reflect the stone near the mirror into the current.",
        "在镜子附近反弹石块，让它落入水流。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 8 selected layout",
          "zh": "低层跳石 文章第 8 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-008.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 8,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-008-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "4e44dff5f48abf4fdd4e08fe023feb262a639498b67b7dbae3fa40340f0d6891",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-008-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "4e44dff5f48abf4fdd4e08fe023feb262a639498b67b7dbae3fa40340f0d6891",
            "imageSha256": "445832c5f9f327042487f1a13b29a03e8d4e323c8e56f5e23a462b7546199816",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
                },
                {
                  "x": 0,
                  "y": 520,
                  "width": 52,
                  "height": 14,
                  "purpose": "fps-counter",
                  "reason": "Lower-left FPS counter on scenery margin."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
              },
              {
                "x": 0,
                "y": 520,
                "width": 52,
                "height": 14,
                "purpose": "fps-counter",
                "reason": "Lower-left FPS counter on scenery margin."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "8",
                "color": "#168bd2",
                "center": {
                  "x": 470,
                  "y": 405
                },
                "rect": [
                  442,
                  377,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "purple stone on the lower bend",
                  "zh": "下方拐角处的紫色石头"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 8, selected layout; ring marks purple stone on the lower bend.",
              "zh": "低层跳石 文章第 8 题选定布局；圆环标出下方拐角处的紫色石头。"
            },
            "instruction": {
              "en": "Reflect the stone near the mirror into the current.",
              "zh": "在镜子附近反弹石块，让它落入水流。"
            },
            "result": {
              "en": "Ring marks purple stone on the lower bend.",
              "zh": "圆环标出下方拐角处的紫色石头。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 8; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "river_maze_clear_tenacious_race_v2",
      "articlePuzzleNumber": 10,
      "levelSet": "lily_rotation",
      "levelSetPosition": 5,
      "candidateThemeGroup": "lily_rotation",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-010-source.webp",
        "cue": "Article puzzle 10; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Slip through during a brief current gap.",
        "趁水流短暂停歇时穿过去。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 10 selected layout",
          "zh": "低层跳石 文章第 10 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-010.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 10,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-010-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "c2d81ddbab4b51809f5eb6b4c0ddaa0c02fc776f7b720ce68bd8a95a3a0be884",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-010-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "c2d81ddbab4b51809f5eb6b4c0ddaa0c02fc776f7b720ce68bd8a95a3a0be884",
            "imageSha256": "9679832b092c332264ed198176e906b0c3735db49691570dd8821112c04c7665",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
                },
                {
                  "x": 0,
                  "y": 520,
                  "width": 52,
                  "height": 14,
                  "purpose": "fps-counter",
                  "reason": "Lower-left FPS counter on scenery margin."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Tight upper-right creator mark mask after verifying empty scenery margin."
              },
              {
                "x": 0,
                "y": 520,
                "width": 52,
                "height": 14,
                "purpose": "fps-counter",
                "reason": "Lower-left FPS counter on scenery margin."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "10",
                "color": "#168bd2",
                "center": {
                  "x": 837,
                  "y": 440
                },
                "rect": [
                  809,
                  412,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "yellow pad at the end of the right walkway",
                  "zh": "右侧步道末端的黄色垫"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 10, selected layout; ring marks yellow pad at the end of the right walkway.",
              "zh": "低层跳石 文章第 10 题选定布局；圆环标出右侧步道末端的黄色垫。"
            },
            "instruction": {
              "en": "Slip through during a brief current gap.",
              "zh": "趁水流短暂停歇时穿过去。"
            },
            "result": {
              "en": "Ring marks yellow pad at the end of the right walkway.",
              "zh": "圆环标出右侧步道末端的黄色垫。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 10; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "river_rates_jagged",
      "articlePuzzleNumber": 12,
      "levelSet": "lily_rotation",
      "levelSetPosition": 7,
      "candidateThemeGroup": "lily_rotation",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-012-source.webp",
        "cue": "Article puzzle 12; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Ride the lower pads; dam the upper current.",
        "乘下层浮叶，并拦截上层水流。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 12 selected layout",
          "zh": "低层跳石 文章第 12 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-012.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 12,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-012-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "366510626521dd592e96af7680e33cf4ba0a21d2330ec854302e1a2e740d5f40",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-012-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "366510626521dd592e96af7680e33cf4ba0a21d2330ec854302e1a2e740d5f40",
            "imageSha256": "caa18dd946a1c18d45ce899b3f4976b0114aa239d36853e8b8eb6fcd319b6650",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "12",
                "color": "#168bd2",
                "center": {
                  "x": 140,
                  "y": 176
                },
                "rect": [
                  112,
                  148,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "yellow pad at the upper-left bend",
                  "zh": "左上拐角处的黄色垫"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 12, selected layout; ring marks yellow pad at the upper-left bend.",
              "zh": "低层跳石 文章第 12 题选定布局；圆环标出左上拐角处的黄色垫。"
            },
            "instruction": {
              "en": "Ride the lower pads; dam the upper current.",
              "zh": "乘下层浮叶，并拦截上层水流。"
            },
            "result": {
              "en": "Ring marks yellow pad at the upper-left bend.",
              "zh": "圆环标出左上拐角处的黄色垫。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 12; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "movable_button",
      "articlePuzzleNumber": 13,
      "levelSet": "flat_things",
      "levelSetPosition": 1,
      "candidateThemeGroup": "flat_things",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-013-source.webp",
        "cue": "Article puzzle 13; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Lower the button by pushing its crystal base.",
        "推动底下的水晶，降低按钮位置。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 13 selected layout",
          "zh": "低层跳石 文章第 13 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-013.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 13,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-013-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "2ebf0fc44055b107bc79d82f8933da9daf83749d54baedba41809c55ee942c73",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-013-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "2ebf0fc44055b107bc79d82f8933da9daf83749d54baedba41809c55ee942c73",
            "imageSha256": "368cc6420004c8a857129755c18a97c6f41d4baf6551daf92b43df833333cdf7",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "13",
                "color": "#168bd2",
                "center": {
                  "x": 458,
                  "y": 310
                },
                "rect": [
                  430,
                  282,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "yellow block at the center of the room",
                  "zh": "房间中央的黄色方块"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 13, selected layout; ring marks yellow block at the center of the room.",
              "zh": "低层跳石 文章第 13 题选定布局；圆环标出房间中央的黄色方块。"
            },
            "instruction": {
              "en": "Lower the button by pushing its crystal base.",
              "zh": "推动底下的水晶，降低按钮位置。"
            },
            "result": {
              "en": "Ring marks yellow block at the center of the room.",
              "zh": "圆环标出房间中央的黄色方块。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 13; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "movable_buttons",
      "articlePuzzleNumber": 14,
      "levelSet": "flat_things",
      "levelSetPosition": 2,
      "candidateThemeGroup": "flat_things",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-014-source.webp",
        "cue": "Article puzzle 14; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Push the purple button into the water.",
        "把紫色按钮推入水中。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 14 selected layout",
          "zh": "低层跳石 文章第 14 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-014.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 14,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-014-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "e8b7a142918b747e461a02940b23ed9858b12d9a982bed3da43725bf4d375950",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-014-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "e8b7a142918b747e461a02940b23ed9858b12d9a982bed3da43725bf4d375950",
            "imageSha256": "3e942caa45b163fd521951ac8a6809922607899dc206ca587e2e15ba53260400",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "14",
                "color": "#168bd2",
                "center": {
                  "x": 148,
                  "y": 399
                },
                "rect": [
                  120,
                  371,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "cyan pad on the lower-left island",
                  "zh": "左下小岛上的青色垫"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 14, selected layout; ring marks cyan pad on the lower-left island.",
              "zh": "低层跳石 文章第 14 题选定布局；圆环标出左下小岛上的青色垫。"
            },
            "instruction": {
              "en": "Push the purple button into the water.",
              "zh": "把紫色按钮推入水中。"
            },
            "result": {
              "en": "Ring marks cyan pad on the lower-left island.",
              "zh": "圆环标出左下小岛上的青色垫。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 14; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "gem_slot_on_lily",
      "articlePuzzleNumber": 15,
      "levelSet": "flat_things",
      "levelSetPosition": 3,
      "candidateThemeGroup": "flat_things",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-015-source.webp",
        "cue": "Article puzzle 15; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Float the gem activators to the needed pads.",
        "把宝石启动器随浮叶送到合适位置。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 15 selected layout",
          "zh": "低层跳石 文章第 15 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-015.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 15,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-015-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "fb31cdcaeaee569dcc863f8760c4a5adcaa4f9a618c3831c341cb678c7d8efa7",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-015-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "fb31cdcaeaee569dcc863f8760c4a5adcaa4f9a618c3831c341cb678c7d8efa7",
            "imageSha256": "2b840ef470f8b2d02d24331150a8443a0a1a31cb0985f63cf859966025884c3b",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "15",
                "color": "#168bd2",
                "center": {
                  "x": 496,
                  "y": 260
                },
                "rect": [
                  468,
                  232,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "blue gem on the central platform",
                  "zh": "中央平台上的蓝色宝石"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 15, selected layout; ring marks blue gem on the central platform.",
              "zh": "低层跳石 文章第 15 题选定布局；圆环标出中央平台上的蓝色宝石。"
            },
            "instruction": {
              "en": "Float the gem activators to the needed pads.",
              "zh": "把宝石启动器随浮叶送到合适位置。"
            },
            "result": {
              "en": "Ring marks blue gem on the central platform.",
              "zh": "圆环标出中央平台上的蓝色宝石。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 15; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "lily_switch_p",
      "articlePuzzleNumber": 16,
      "levelSet": "flat_things",
      "levelSetPosition": 4,
      "candidateThemeGroup": "flat_things",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-016-source.webp",
        "cue": "Article puzzle 16; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Stack the buttons by using fallen goblins.",
        "让哥布林倒在按钮上，把按钮叠到同格。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 16 selected layout",
          "zh": "低层跳石 文章第 16 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-016.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 16,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-016-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "f601382d000a17028858aa004a54e000eec7d078bb343e606d138f2a38d9a7ee",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-016-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "f601382d000a17028858aa004a54e000eec7d078bb343e606d138f2a38d9a7ee",
            "imageSha256": "6e080c87761f7daf53da4099cfde08b5719e98e5c8c2d626bf9d01618646ff98",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "16",
                "color": "#168bd2",
                "center": {
                  "x": 465,
                  "y": 225
                },
                "rect": [
                  437,
                  197,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "purple pad near the center",
                  "zh": "中央附近的紫色垫"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 16, selected layout; ring marks purple pad near the center.",
              "zh": "低层跳石 文章第 16 题选定布局；圆环标出中央附近的紫色垫。"
            },
            "instruction": {
              "en": "Stack the buttons by using fallen goblins.",
              "zh": "让哥布林倒在按钮上，把按钮叠到同格。"
            },
            "result": {
              "en": "Ring marks purple pad near the center.",
              "zh": "圆环标出中央附近的紫色垫。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 16; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "sombreros",
      "articlePuzzleNumber": 17,
      "levelSet": "flat_things",
      "levelSetPosition": 5,
      "candidateThemeGroup": "flat_things",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-017-source.webp",
        "cue": "Article puzzle 17; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Drop four head exits; carry the fifth.",
        "移下四个头顶出口，第五个由商人携带。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 17 selected layout",
          "zh": "低层跳石 文章第 17 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-017.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 17,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-017-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "e3a64d50bd37a9d597f89b50a9f58d825760f751947a024cdb62c87c2b58cba2",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-017-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "e3a64d50bd37a9d597f89b50a9f58d825760f751947a024cdb62c87c2b58cba2",
            "imageSha256": "9d02b0f05b37f6e7309c3b99708f142e06867cfbe4eef7abcbb7b915b1a4cf0e",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "17",
                "color": "#168bd2",
                "center": {
                  "x": 472,
                  "y": 410
                },
                "rect": [
                  444,
                  382,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "middle orange circular pad in the front row",
                  "zh": "前排中间的橙色圆形垫"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 17, selected layout; ring marks middle orange circular pad in the front row.",
              "zh": "低层跳石 文章第 17 题选定布局；圆环标出前排中间的橙色圆形垫。"
            },
            "instruction": {
              "en": "Drop four head exits; carry the fifth.",
              "zh": "移下四个头顶出口，第五个由商人携带。"
            },
            "result": {
              "en": "Ring marks middle orange circular pad in the front row.",
              "zh": "圆环标出前排中间的橙色圆形垫。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 17; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "mirror_180",
      "articlePuzzleNumber": 18,
      "levelSet": "lily_highway_mirrors_and_stones",
      "levelSetPosition": 8,
      "candidateThemeGroup": "lily_highway_mirrors_and_stones",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-018-source.webp",
        "cue": "Article puzzle 18; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Combine a U-turn with a Z-shaped lift.",
        "先用 U 形回转，再用 Z 形抬高路线。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 18 selected layout",
          "zh": "低层跳石 文章第 18 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-018.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 18,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-018-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "2c6866299c54fea2b9389a917333792be5c44fe07bbc0507414e7cc3f598c965",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-018-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "2c6866299c54fea2b9389a917333792be5c44fe07bbc0507414e7cc3f598c965",
            "imageSha256": "1d02ebd6b26cb20cc6381ea6eb1990f29d4e0113b7c07fe9f465bce7c4301c88",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "18",
                "color": "#168bd2",
                "center": {
                  "x": 720,
                  "y": 225
                },
                "rect": [
                  692,
                  197,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "tilted mirror near the right edge",
                  "zh": "右侧边缘附近的倾斜镜子"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 18, selected layout; ring marks tilted mirror near the right edge.",
              "zh": "低层跳石 文章第 18 题选定布局；圆环标出右侧边缘附近的倾斜镜子。"
            },
            "instruction": {
              "en": "Combine a U-turn with a Z-shaped lift.",
              "zh": "先用 U 形回转，再用 Z 形抬高路线。"
            },
            "result": {
              "en": "Ring marks tilted mirror near the right edge.",
              "zh": "圆环标出右侧边缘附近的倾斜镜子。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 18; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "reroute_3",
      "articlePuzzleNumber": 19,
      "levelSet": "lily_highway_mirrors_and_stones",
      "levelSetPosition": 9,
      "candidateThemeGroup": "lily_highway_mirrors_and_stones",
      "articleCue": {
        "videoPart": null,
        "time": null,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "low-skipping-stones-article",
        "file": "/evidence/low-skipping-stones-puzzle-019-source.webp",
        "cue": "Article puzzle 19; exact PTS unknown.",
        "exactPtsKnown": false
      },
      "instruction": [
        "Bounce the stone one mirror at a time.",
        "逐次利用镜面反弹石块。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones article puzzle 19 selected layout",
          "zh": "低层跳石 文章第 19 题选定布局"
        },
        "opening": {
          "en": "The ring marks a visible landmark, not an action step.",
          "zh": "圆环标出可见地标，并非操作步骤。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/low-skipping-stones/puzzle-019.svg",
            "width": 960,
            "height": 540,
            "articlePuzzleNumber": 19,
            "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-019-source.webp",
            "sourceFrameFormat": "image/webp",
            "sourceFrameSha256": "66300f705095e3272c165337b58d76c1bd40af6cadb3630054bc72fee73cf9f7",
            "displaySourceFile": "/evidence/low-skipping-stones-puzzle-019-source.webp",
            "displayFrameFormat": "image/webp",
            "displayFrameSha256": "66300f705095e3272c165337b58d76c1bd40af6cadb3630054bc72fee73cf9f7",
            "imageSha256": "2abbc00c8174cd8290426a60f8ac9b6b6be03a4a0ea8707206f7965ccf42a553",
            "sourceTimeLabel": "Article cue: numbered still; exact PTS unknown.",
            "checkpointActionIndex": null,
            "crop": {
              "x": 0,
              "y": 0,
              "width": 960,
              "height": 540,
              "excludedRects": [
                {
                  "x": 800,
                  "y": 16,
                  "width": 158,
                  "height": 36,
                  "purpose": "bilibili-watermark",
                  "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 800,
                "y": 16,
                "width": 158,
                "height": 36,
                "purpose": "bilibili-watermark",
                "reason": "Full-frame review confines the creator mark to empty scenery above the playable area."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "badge": "19",
                "color": "#168bd2",
                "center": {
                  "x": 794,
                  "y": 390
                },
                "rect": [
                  766,
                  362,
                  56,
                  56
                ],
                "radius": 28,
                "target": {
                  "en": "green square on the small right island",
                  "zh": "右侧小岛上的绿色方块"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones article puzzle 19, selected layout; ring marks green square on the small right island.",
              "zh": "低层跳石 文章第 19 题选定布局；圆环标出右侧小岛上的绿色方块。"
            },
            "instruction": {
              "en": "Bounce the stone one mirror at a time.",
              "zh": "逐次利用镜面反弹石块。"
            },
            "result": {
              "en": "Ring marks green square on the small right island.",
              "zh": "圆环标出右侧小岛上的绿色方块。"
            },
            "sourceCue": "Low Skipping Stones article puzzle 19; exact PTS unknown.",
            "exactPtsKnown": false
          }
        ]
      }
    },
    {
      "levelId": "water_bender_v3",
      "articlePuzzleNumber": 9,
      "articleSection": "Puzzle 9",
      "articleGroup": "low-skipping-stones",
      "articleReportedHint": {
        "en": "Use a slanted mirror to steer the current.",
        "zh": "把斜镜放进水里，改变水流方向。",
        "basis": "article-reported-key-idea",
        "sourceId": "low-skipping-stones-article",
        "sourceSection": "Puzzle 9"
      },
      "existingSourceHint": {
        "en": "Use a slanted mirror to steer the current.",
        "zh": "把斜镜放进水里，改变水流方向。"
      },
      "articleIdentityEvidence": [
        {
          "evidenceFile": "approved-cross-source-candidates-2026-10-24.json",
          "recordPath": "root.records[37]",
          "classification": "confirmed-shipped",
          "articlePuzzleNumber": 9,
          "source": {
            "sourceId": "low-skipping-stones-article",
            "url": "https://sinkingstarwalkthrough.com/img/low/low-skipping-stones/puzzle-09.webp",
            "section": "Puzzle 9",
            "file": "/evidence/low-skipping-stones-puzzle-009-source.webp",
            "bytes": 29286,
            "sha256": "203018c3b7eb58b0a64edfb1231fd894b19652736b4fe80c34531eacfefd45d1",
            "dimensions": [
              960,
              540
            ],
            "articleHtmlSha256": null,
            "pageSlug": "low-skipping-stones-solutions"
          }
        }
      ],
      "articleStillIdentity": {
        "source": {
          "sourceId": "low-skipping-stones-article",
          "url": "https://sinkingstarwalkthrough.com/img/low/low-skipping-stones/puzzle-09.webp",
          "section": "Puzzle 9",
          "file": "/evidence/low-skipping-stones-puzzle-009-source.webp",
          "bytes": 29286,
          "sha256": "203018c3b7eb58b0a64edfb1231fd894b19652736b4fe80c34531eacfefd45d1",
          "dimensions": [
            960,
            540
          ],
          "articleHtmlSha256": null,
          "pageSlug": "low-skipping-stones-solutions"
        }
      },
      "articleStillDisplayRejection": {
        "status": "article-still-not-displayed",
        "reason": "Creator mark overlaps the playable far-right walkway; retain original and use text-only.",
        "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-009-source.webp",
        "sourceFrameSha256": "203018c3b7eb58b0a64edfb1231fd894b19652736b4fe80c34531eacfefd45d1"
      },
      "nativeTexture": {
        "entry": "data-pc/__water_bender_v3.texture",
        "bytes": 646720,
        "sha256": "3135068c34a3aaaf887a59b58af35c578041a036f91197b0a2048cb935ed7238",
        "dimensions": [
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        ],
        "formatId": 256
      },
      "nativeSource": {
        "entities": {
          "entry": "data-common/water_bender_v3.entities",
          "bytes": 108866,
          "sha256": "ef5b922b5ef4889ac8f6849e4f035f2821575060afc26c1fbeaf88e64c99b21b"
        },
        "levelManifest": {
          "entry": "data-common/water_bender_v3.level_manifest",
          "bytes": 5037,
          "sha256": "e679d7a7782b181f28f7ea33969b050cc1c81a7d21750397d94c9fb06bb1d809"
        }
      },
      "setMemberships": [
        {
          "set": "drafts_arted",
          "positions": [
            567
          ]
        },
        {
          "set": "underworld_mirrors_and_promesst",
          "positions": [
            4
          ]
        }
      ],
      "overworldEntry": {
        "levelId": "water_bender_v3",
        "entityId": 115464642,
        "position": {
          "x": 114.0,
          "y": 37.0,
          "z": -21.0
        },
        "unlockPrerequisiteIds": [],
        "unlockIsOrGate": false,
        "demoPhase": null,
        "towerFlags": null,
        "achievement": null,
        "currentlyBroken": false,
        "currentlyDisfavored": false,
        "sourceEntry": "data-common/overworld.entities",
        "setThemeGroup": "underworld_mirrors_and_promesst"
      },
      "levelSet": "underworld_mirrors_and_promesst",
      "levelSetPosition": 4,
      "candidateThemeGroup": "underworld_mirrors_and_promesst",
      "inventoryStatusRetained": "overworld-entry-linked",
      "sourceId": "low-skipping-stones-article",
      "videoSourceId": "remaining29-bilibili-part-52-encoding",
      "observationSourceId": "remaining29-selected-video-frame-observations",
      "articleCue": {
        "sourceId": "low-skipping-stones-article",
        "section": "Puzzle 9",
        "articlePuzzleNumber": 9,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "remaining29-bilibili-part-52-encoding",
        "url": "https://www.bilibili.com/video/BV13FH96bE4m?p=52",
        "playlistPart": 52,
        "cid": 42774365835,
        "file": "/evidence/remaining29-selected-video-frames-2026-10-25/water_bender_v3-p52-803s.jpg",
        "sha256": "b537a83bb871e10dddb8ed6883c97eccf32b53d0b74a3d623ce30e69a221c399",
        "cue": "Selected source-video state; exact timing is stored in the observation evidence."
      },
      "instruction": [
        "Use a slanted mirror to steer the current.",
        "把斜镜放进水里，改变水流方向。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones Puzzle 9 selected view",
          "zh": "Low Skipping Stones 谜题 9选定画面"
        },
        "opening": {
          "en": "Selected room detail.",
          "zh": "选定的房间局部画面。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/remaining29-selected-video-frames/water_bender_v3-selected.svg",
            "width": 852,
            "height": 420,
            "articlePuzzleNumber": 9,
            "articleSection": "Puzzle 9",
            "sourceFrameFile": "/evidence/remaining29-selected-video-frames-2026-10-25/water_bender_v3-p52-803s.jpg",
            "sourceFrameFormat": "image/jpeg",
            "sourceFrameSha256": "b537a83bb871e10dddb8ed6883c97eccf32b53d0b74a3d623ce30e69a221c399",
            "sourceFrameBytes": 57196,
            "displaySourceFile": "/evidence/remaining29-selected-video-frames-2026-10-25/water_bender_v3-p52-803s.jpg",
            "displayFrameFormat": "image/jpeg",
            "displayFrameSha256": "b537a83bb871e10dddb8ed6883c97eccf32b53d0b74a3d623ce30e69a221c399",
            "imageSha256": "0571baf42a48fd5d6c38c410064ec8a1bf40ea61416c5efb51bc5d7bcc61ba8b",
            "sourceTimeLabel": "Selected source-video view; exact timing is retained in the observation record.",
            "sourceId": "remaining29-bilibili-part-52-encoding",
            "observationSourceId": "remaining29-selected-video-frame-observations",
            "crop": {
              "x": 0,
              "y": 50,
              "width": 852,
              "height": 420,
              "excludedRects": []
            },
            "displayMasks": [],
            "markers": [
              {
                "type": "layout-reference",
                "color": "#31bfff",
                "center": {
                  "x": 416,
                  "y": 101
                },
                "radius": 16,
                "target": {
                  "en": "the mirror on the left of the upper platform",
                  "zh": "上方平台左侧的镜子"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones Puzzle 9 selected room detail; the ring marks the mirror on the left of the upper platform.",
              "zh": "谜题 9选定的房间局部画面；蓝圈标出上方平台左侧的镜子。"
            },
            "instruction": {
              "en": "Find the mirror on the left of the upper platform.",
              "zh": "找到上方平台左侧的镜子。"
            },
            "result": {
              "en": "The blue ring marks the mirror on the left of the upper platform.",
              "zh": "蓝圈标出上方平台左侧的镜子。"
            },
            "sourceCue": "Selected source-video frame; the precise PTS/time base is in the observation evidence.",
            "exactPtsKnown": true
          }
        ]
      }
    },
    {
      "levelId": "river_rates_button",
      "articlePuzzleNumber": 11,
      "articleSection": "Puzzle 11",
      "articleGroup": "low-skipping-stones",
      "articleReportedHint": {
        "en": "Reroute the currents to stagger the floating shields.",
        "zh": "改道水流，让浮叶上的护石错开。",
        "basis": "article-reported-key-idea",
        "sourceId": "low-skipping-stones-article",
        "sourceSection": "Puzzle 11"
      },
      "existingSourceHint": {
        "en": "Reroute the currents to stagger the floating shields.",
        "zh": "改道水流，让浮叶上的护石错开。"
      },
      "articleIdentityEvidence": [
        {
          "evidenceFile": "approved-cross-source-candidates-2026-10-24.json",
          "recordPath": "root.records[39]",
          "classification": "confirmed-shipped",
          "articlePuzzleNumber": 11,
          "source": {
            "sourceId": "low-skipping-stones-article",
            "url": "https://sinkingstarwalkthrough.com/img/low/low-skipping-stones/puzzle-11.webp",
            "section": "Puzzle 11",
            "file": "/evidence/low-skipping-stones-puzzle-011-source.webp",
            "bytes": 47546,
            "sha256": "3ab4bfea2b25e2754a2aaf845d79c79cc65e13254af90a6f76ef42fa12dcae3c",
            "dimensions": [
              960,
              540
            ],
            "articleHtmlSha256": null,
            "pageSlug": "low-skipping-stones-solutions"
          }
        }
      ],
      "articleStillIdentity": {
        "source": {
          "sourceId": "low-skipping-stones-article",
          "url": "https://sinkingstarwalkthrough.com/img/low/low-skipping-stones/puzzle-11.webp",
          "section": "Puzzle 11",
          "file": "/evidence/low-skipping-stones-puzzle-011-source.webp",
          "bytes": 47546,
          "sha256": "3ab4bfea2b25e2754a2aaf845d79c79cc65e13254af90a6f76ef42fa12dcae3c",
          "dimensions": [
            960,
            540
          ],
          "articleHtmlSha256": null,
          "pageSlug": "low-skipping-stones-solutions"
        }
      },
      "articleStillDisplayRejection": {
        "status": "article-still-not-displayed",
        "reason": "Creator mark crosses the upper walkable strip near (807,38); retain original and use text-only.",
        "sourceFrameFile": "/evidence/low-skipping-stones-puzzle-011-source.webp",
        "sourceFrameSha256": "3ab4bfea2b25e2754a2aaf845d79c79cc65e13254af90a6f76ef42fa12dcae3c"
      },
      "nativeTexture": {
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        "bytes": 936871,
        "sha256": "d0ce68bc35f5b2c4b532601927587122e1b143168c110d5315f71c61c58ccc32",
        "dimensions": [
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        ],
        "formatId": 256
      },
      "nativeSource": {
        "entities": {
          "entry": "data-common/river_rates_button.entities",
          "bytes": 443815,
          "sha256": "232d818fa98e0189599491fe87b0fd3594ec21d5518009c6cc1827c4747ce11e"
        },
        "levelManifest": {
          "entry": "data-common/river_rates_button.level_manifest",
          "bytes": 8997,
          "sha256": "1aa5237588cceaecf08ad658f4ed3928625bb897da314abb5bd13216daf0e250"
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      },
      "setMemberships": [
        {
          "set": "drafts_arted",
          "positions": [
            580
          ]
        },
        {
          "set": "lily_rotation",
          "positions": [
            6
          ]
        }
      ],
      "overworldEntry": {
        "levelId": "river_rates_button",
        "entityId": 94377323,
        "position": {
          "x": 146.0,
          "y": 46.0,
          "z": -21.0
        },
        "unlockPrerequisiteIds": [
          94377317
        ],
        "unlockIsOrGate": false,
        "demoPhase": null,
        "towerFlags": null,
        "achievement": null,
        "currentlyBroken": false,
        "currentlyDisfavored": false,
        "sourceEntry": "data-common/overworld.entities",
        "setThemeGroup": "lily_rotation"
      },
      "levelSet": "lily_rotation",
      "levelSetPosition": 6,
      "candidateThemeGroup": "lily_rotation",
      "inventoryStatusRetained": "overworld-entry-linked",
      "sourceId": "low-skipping-stones-article",
      "videoSourceId": "remaining29-bilibili-part-52-encoding",
      "observationSourceId": "remaining29-selected-video-frame-observations",
      "articleCue": {
        "sourceId": "low-skipping-stones-article",
        "section": "Puzzle 11",
        "articlePuzzleNumber": 11,
        "exactPtsKnown": false
      },
      "displaySource": {
        "sourceId": "remaining29-bilibili-part-52-encoding",
        "url": "https://www.bilibili.com/video/BV13FH96bE4m?p=52",
        "playlistPart": 52,
        "cid": 42774365835,
        "file": "/evidence/remaining29-selected-video-frames-2026-10-25/river_rates_button-p52-1112s.jpg",
        "sha256": "eddf23b016f404548a01c43a605f689657a6c39da5a46a58a74f10c2124e9cf3",
        "cue": "Selected source-video state; exact timing is stored in the observation evidence."
      },
      "instruction": [
        "Reroute the currents to stagger the floating shields.",
        "改道水流，让浮叶上的护石错开。"
      ],
      "walkthrough": {
        "label": {
          "en": "Low Skipping Stones Puzzle 11 selected view",
          "zh": "Low Skipping Stones 谜题 11选定画面"
        },
        "opening": {
          "en": "Selected room view.",
          "zh": "选定的关卡画面。"
        },
        "frames": [
          {
            "image": "/art/walkthrough/remaining29-selected-video-frames/river_rates_button-selected.svg",
            "width": 852,
            "height": 480,
            "articlePuzzleNumber": 11,
            "articleSection": "Puzzle 11",
            "sourceFrameFile": "/evidence/remaining29-selected-video-frames-2026-10-25/river_rates_button-p52-1112s.jpg",
            "sourceFrameFormat": "image/jpeg",
            "sourceFrameSha256": "eddf23b016f404548a01c43a605f689657a6c39da5a46a58a74f10c2124e9cf3",
            "sourceFrameBytes": 86418,
            "displaySourceFile": "/evidence/remaining29-selected-video-frames-2026-10-25/river_rates_button-p52-1112s.jpg",
            "displayFrameFormat": "image/jpeg",
            "displayFrameSha256": "eddf23b016f404548a01c43a605f689657a6c39da5a46a58a74f10c2124e9cf3",
            "imageSha256": "f74ec240bf89ecd54b6c0c7793eaadb28c927d8de784f81a36f369d56514dfa8",
            "sourceTimeLabel": "Selected source-video view; exact timing is retained in the observation record.",
            "sourceId": "remaining29-bilibili-part-52-encoding",
            "observationSourceId": "remaining29-selected-video-frame-observations",
            "crop": {
              "x": 0,
              "y": 0,
              "width": 852,
              "height": 480,
              "excludedRects": [
                {
                  "x": 713,
                  "y": 12,
                  "width": 139,
                  "height": 35,
                  "purpose": "creator-logo",
                  "reason": "Root checked this selected original: logo lies on empty water, sky or non-walkable exterior roof/wall above all puzzle floors."
                },
                {
                  "x": 0,
                  "y": 472,
                  "width": 32,
                  "height": 8,
                  "purpose": "fps",
                  "reason": "FPS lies outside walkable floor in the bottom-left margin."
                }
              ]
            },
            "displayMasks": [
              {
                "x": 713,
                "y": 12,
                "width": 139,
                "height": 35,
                "purpose": "creator-logo",
                "reason": "Root checked this selected original: logo lies on empty water, sky or non-walkable exterior roof/wall above all puzzle floors."
              },
              {
                "x": 0,
                "y": 472,
                "width": 32,
                "height": 8,
                "purpose": "fps",
                "reason": "FPS lies outside walkable floor in the bottom-left margin."
              }
            ],
            "markers": [
              {
                "type": "layout-reference",
                "color": "#31bfff",
                "center": {
                  "x": 671,
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                },
                "radius": 16,
                "target": {
                  "en": "the upper red stone above the river",
                  "zh": "河流上方最上面的一块红色石头"
                }
              }
            ],
            "alt": {
              "en": "Low Skipping Stones Puzzle 11 selected room view; the ring marks the upper red stone above the river.",
              "zh": "谜题 11选定的关卡画面；蓝圈标出河流上方最上面的一块红色石头。"
            },
            "instruction": {
              "en": "Find the upper red stone above the river.",
              "zh": "找到河流上方最上面的一块红色石头。"
            },
            "result": {
              "en": "The blue ring marks the upper red stone above the river.",
              "zh": "蓝圈标出河流上方最上面的一块红色石头。"
            },
            "sourceCue": "Selected source-video frame; the precise PTS/time base is in the observation evidence.",
            "exactPtsKnown": true
          }
        ]
      }
    }
  ],
  "textOnlySections": [],
  "displayCoverageSourceId": "remaining29-display-coverage-delta",
  "displayCoverageRevision": "remaining29-display-coverage-delta-2026-10-25"
}
