{
 "grid_size": 9,
 "polyominos": [
  {
   "tiles": [
    [
     3,
     7
    ],
    [
     3,
     8
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 0,
   "color": [
    0,
    90,
    90
   ]
  },
  {
   "tiles": [
    [
     7,
     1
    ],
    [
     8,
     1
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 1,
   "color": [
    0,
    90,
    90
   ]
  },
  {
   "tiles": [
    [
     5,
     6
    ],
    [
     6,
     6
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 2,
   "color": [
    0,
    90,
    90
   ]
  },
  {
   "tiles": [
    [
     5,
     8
    ],
    [
     6,
     8
    ],
    [
     7,
     8
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 3,
   "color": [
    0,
    90,
    90
   ]
  },
  {
   "tiles": [
    [
     0,
     3
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     2,
     0
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     2,
     1
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     2,
     2
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     2,
     3
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     3,
     1
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     3,
     2
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     3,
     3
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     3,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     3,
     5
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     5,
     3
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     5,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     7,
     2
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     7,
     3
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     7,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     7,
     5
    ]
   ],
   "piece_type": "BARRIER"
  }
 ],
 "level_color": [
  0,
  90,
  90
 ],
 "meta": {
  "generator": "random_boards",
  "preset": "9x9/4",
  "tier": "easy",
  "seed": 5180433,
  "floor": 11,
  "soft_flaws": [],
  "hard_flaws": [],
  "taste": {
   "score": 3,
   "verdict": "tidy",
   "summary": "The board has a strong central wall, but the lone barrier at [0,3] creates a ragged silhouette that should be joined to the main structure.",
   "issues": [
    {
     "kind": "ragged_shell",
     "cells": [
      [
       0,
       3
      ]
     ],
     "note": "Lone barrier cell on the left edge is separated from the main wall by a 1-cell gap."
    },
    {
     "kind": "near_miss",
     "cells": [
      [
       0,
       3
      ]
     ],
     "note": "The barrier at [0,3] is very close to the wall structure at [2,3], creating a narrow notch."
    },
    {
     "kind": "scatter",
     "cells": [
      [
       7,
       2
      ],
      [
       7,
       3
      ],
      [
       7,
       4
      ],
      [
       7,
       5
      ]
     ],
     "note": "The vertical line of barriers on the right is an island; joining it to the shell or the central block would look more purposeful."
    }
   ],
   "suggest_fill": [
    [
     1,
     3
    ]
   ],
   "suggest_remove": [],
   "model": "gemma4:31b"
  },
  "space": {
   "optimal": 11,
   "states": 21263,
   "dead_frac": 0.848,
   "optimal_lines": 643,
   "progress_frac": 0.244,
   "fatal_frac": 0.189,
   "fatal_merge_frac": 0.654,
   "forced_frac": 0.455,
   "survive_random": 0.1041,
   "mean_branching": 8.18,
   "solvable_frac": 0.152,
   "min_carry": 0,
   "carry_frac": 0.0
  },
  "id": "daily_2026-10-30_easy",
  "date": "2026-10-30",
  "band": "easy",
  "difficulty_score": -0.635,
  "optimal_len": 11,
  "title": "Oct 30",
  "rev": "45d1e65f"
 }
}