{
 "grid_size": 10,
 "polyominos": [
  {
   "tiles": [
    [
     1,
     0
    ],
    [
     2,
     0
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 0,
   "color": [
    100,
    30,
    70
   ]
  },
  {
   "tiles": [
    [
     8,
     7
    ],
    [
     8,
     8
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 1,
   "color": [
    100,
    30,
    70
   ]
  },
  {
   "tiles": [
    [
     1,
     2
    ],
    [
     2,
     2
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 2,
   "color": [
    100,
    30,
    70
   ]
  },
  {
   "tiles": [
    [
     0,
     6
    ],
    [
     0,
     7
    ],
    [
     1,
     7
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 3,
   "color": [
    100,
    30,
    70
   ]
  },
  {
   "tiles": [
    [
     7,
     2
    ],
    [
     8,
     2
    ],
    [
     9,
     2
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 4,
   "color": [
    100,
    30,
    70
   ]
  },
  {
   "tiles": [
    [
     3,
     0
    ]
   ],
   "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": [
    [
     5,
     1
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     5,
     7
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     5,
     9
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     1
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     2
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     3
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     5
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     6
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     7
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     9
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     7,
     9
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     8,
     9
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     9,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     9,
     5
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     9,
     6
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     9,
     7
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     9,
     8
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     9,
     9
    ]
   ],
   "piece_type": "BARRIER"
  }
 ],
 "level_color": [
  100,
  30,
  70
 ],
 "meta": {
  "generator": "random_boards",
  "preset": "10x10/5",
  "tier": "medium",
  "seed": 5180343,
  "floor": 14,
  "soft_flaws": [],
  "hard_flaws": [],
  "taste": {
   "score": 3,
   "verdict": "tidy",
   "summary": "The central vertical barrier is an island that almost touches both the top and bottom edges; joining it to the shell creates a cleaner, more purposeful layout.",
   "issues": [
    {
     "kind": "near_miss",
     "cells": [
      [
       5,
       1
      ],
      [
       6,
       1
      ]
     ],
     "note": "The barrier island at (5,1)-(6,7) is separated from the top shell by a 1-cell gap at (5,0) and (6,0), creating a ragged silhouette."
    },
    {
     "kind": "near_miss",
     "cells": [
      [
       5,
       7
      ],
      [
       6,
       7
      ]
     ],
     "note": "The barrier island is separated from the bottom shell by a 1-cell gap at (5,8) and (6,8)."
    }
   ],
   "suggest_fill": [
    [
     5,
     0
    ],
    [
     6,
     0
    ],
    [
     5,
     8
    ],
    [
     6,
     8
    ]
   ],
   "suggest_remove": [],
   "model": "gemma4:31b"
  },
  "space": {
   "optimal": 14,
   "states": 49855,
   "dead_frac": 0.836,
   "optimal_lines": 300300,
   "progress_frac": 0.379,
   "fatal_frac": 0.086,
   "fatal_merge_frac": 0.227,
   "forced_frac": 0.357,
   "survive_random": 0.3835,
   "mean_branching": 8.29,
   "solvable_frac": 0.164
  },
  "id": "daily_2026-10-17_medium",
  "date": "2026-10-17",
  "band": "medium",
  "difficulty_score": -0.156,
  "optimal_len": 14,
  "title": "Oct 17",
  "rev": "be098bb9"
 }
}