{
 "grid_size": 9,
 "polyominos": [
  {
   "tiles": [
    [
     3,
     7
    ],
    [
     3,
     8
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 0,
   "color": [
    0,
    0,
    120
   ]
  },
  {
   "tiles": [
    [
     5,
     7
    ],
    [
     5,
     8
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 1,
   "color": [
    0,
    0,
    120
   ]
  },
  {
   "tiles": [
    [
     7,
     0
    ],
    [
     7,
     1
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 2,
   "color": [
    0,
    0,
    120
   ]
  },
  {
   "tiles": [
    [
     1,
     0
    ],
    [
     1,
     1
    ],
    [
     1,
     2
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 3,
   "color": [
    0,
    0,
    120
   ]
  },
  {
   "tiles": [
    [
     0,
     3
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     0,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     0,
     5
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     0,
     6
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     1,
     3
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     2,
     3
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     2,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     4,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     4,
     5
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     4,
     6
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     5,
     5
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     5,
     6
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     5
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     6
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     7,
     5
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     7,
     6
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     8,
     6
    ]
   ],
   "piece_type": "BARRIER"
  }
 ],
 "level_color": [
  0,
  0,
  120
 ],
 "meta": {
  "generator": "random_boards",
  "preset": "9x9/4",
  "tier": "easy",
  "seed": 5181356,
  "floor": 7,
  "soft_flaws": [],
  "hard_flaws": [],
  "taste": {
   "score": 3,
   "verdict": "tidy",
   "summary": "The left wall has a small notch and a nearby floating pillar; filling these gaps creates a cleaner, more deliberate silhouette.",
   "issues": [
    {
     "kind": "ragged_shell",
     "cells": [
      [
       1,
       4
      ]
     ],
     "note": "A single-cell notch in the left wall creates a ragged silhouette."
    },
    {
     "kind": "near_miss",
     "cells": [
      [
       3,
       4
      ]
     ],
     "note": "The barrier at [4,4] is separated from the left wall by a 1-cell gap, making the layout look fragmented."
    }
   ],
   "suggest_fill": [
    [
     1,
     4
    ],
    [
     3,
     4
    ]
   ],
   "suggest_remove": [],
   "model": "gemma4:31b"
  },
  "space": {
   "optimal": 12,
   "states": 2385,
   "dead_frac": 0.92,
   "optimal_lines": 396,
   "progress_frac": 0.202,
   "fatal_frac": 0.415,
   "fatal_merge_frac": 0.828,
   "forced_frac": 0.417,
   "survive_random": 0.002,
   "mean_branching": 7.83,
   "solvable_frac": 0.08,
   "min_carry": 4,
   "carry_frac": 0.333
  },
  "id": "daily_2026-10-19_easy",
  "date": "2026-10-19",
  "band": "easy",
  "difficulty_score": -0.589,
  "optimal_len": 12,
  "title": "Oct 19",
  "rev": "2d384696"
 }
}