{
 "grid_size": 10,
 "polyominos": [
  {
   "tiles": [
    [
     7,
     8
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 0,
   "color": [
    110,
    0,
    0
   ]
  },
  {
   "tiles": [
    [
     6,
     2
    ],
    [
     7,
     2
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 1,
   "color": [
    110,
    0,
    0
   ]
  },
  {
   "tiles": [
    [
     4,
     3
    ],
    [
     5,
     3
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 2,
   "color": [
    110,
    0,
    0
   ]
  },
  {
   "tiles": [
    [
     2,
     1
    ],
    [
     2,
     2
    ],
    [
     3,
     2
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 3,
   "color": [
    110,
    0,
    0
   ]
  },
  {
   "tiles": [
    [
     7,
     6
    ],
    [
     8,
     5
    ],
    [
     8,
     6
    ],
    [
     9,
     6
    ]
   ],
   "piece_type": "MOVABLE",
   "poly_id": 4,
   "color": [
    110,
    0,
    0
   ]
  },
  {
   "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,
     1
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     1,
     8
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     2,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     2,
     6
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     2,
     7
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     3,
     0
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     3,
     1
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     3,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     3,
     5
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     3,
     6
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     3,
     9
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     4,
     0
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     4,
     1
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     4,
     5
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     5,
     1
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     5
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     6,
     8
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     7,
     0
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     7,
     3
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     7,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     7,
     9
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     8,
     2
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     9,
     4
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     9,
     5
    ]
   ],
   "piece_type": "BARRIER"
  },
  {
   "tiles": [
    [
     9,
     9
    ]
   ],
   "piece_type": "BARRIER"
  }
 ],
 "level_color": [
  110,
  0,
  0
 ],
 "meta": {
  "generator": "mutate_harden",
  "preset": "10x10/5",
  "tier": "hard",
  "seed_optimal": 13,
  "harden_seconds": 1200,
  "harden_restarts": 13,
  "hard_target": null,
  "brutal": true,
  "soft_flaws": [],
  "hard_flaws": [],
  "beautify": {
   "removed": 0,
   "filled": 3
  },
  "taste": {
   "score": 2,
   "verdict": "tidy",
   "summary": "The board is cluttered with many isolated single-cell barriers that look like random noise rather than deliberate design.",
   "issues": [
    {
     "kind": "random_dot",
     "cells": [
      [
       1,
       1
      ]
     ],
     "note": "Lone barrier dot floating in the top-left area."
    },
    {
     "kind": "random_dot",
     "cells": [
      [
       8,
       2
      ]
     ],
     "note": "Lone barrier dot floating near the top-right."
    },
    {
     "kind": "random_dot",
     "cells": [
      [
       6,
       5
      ]
     ],
     "note": "Lone barrier dot in the center-right."
    },
    {
     "kind": "random_dot",
     "cells": [
      [
       6,
       8
      ]
     ],
     "note": "Lone barrier dot in the bottom-right."
    },
    {
     "kind": "random_dot",
     "cells": [
      [
       1,
       8
      ]
     ],
     "note": "Lone barrier dot in the bottom-left."
    },
    {
     "kind": "ragged_shell",
     "cells": [
      [
       7,
       0
      ]
     ],
     "note": "Single barrier cell on the top edge looks like a notch."
    },
    {
     "kind": "ragged_shell",
     "cells": [
      [
       7,
       9
      ]
     ],
     "note": "Single barrier cell on the bottom edge looks like a notch."
    }
   ],
   "suggest_fill": [],
   "suggest_remove": [
    [
     1,
     1
    ],
    [
     8,
     2
    ],
    [
     6,
     5
    ],
    [
     6,
     8
    ],
    [
     1,
     8
    ],
    [
     7,
     0
    ],
    [
     7,
     9
    ]
   ],
   "model": "gemma4:31b"
  },
  "space": {
   "optimal": 72,
   "states": 32988,
   "dead_frac": 0.715,
   "optimal_lines": 227795867918845855200,
   "progress_frac": 0.212,
   "fatal_frac": 0.196,
   "fatal_merge_frac": 0.956,
   "forced_frac": 0.417,
   "survive_random": 0.0,
   "mean_branching": 9.44,
   "solvable_frac": 0.285,
   "min_carry": 11,
   "carry_frac": 0.153
  },
  "id": "daily_2026-11-01_hard",
  "date": "2026-11-01",
  "band": "hard",
  "difficulty_score": 2.376,
  "optimal_len": 72,
  "title": "Nov 1",
  "rev": "8ce8555f"
 }
}