{
 "version": 1,
 "generated": "2026-09-02T15:52:57",
 "levels": [
  {
   "id": "starter_pocket_6x6",
   "date": "2026-09-02",
   "band": "easy",
   "difficulty_score": -1.264,
   "optimal_len": 11,
   "title": "Pocket Puzzle",
   "grid_size": 6,
   "pieces": 4
  },
  {
   "id": "starter_lines_10x10",
   "date": "2026-09-02",
   "band": "easy",
   "difficulty_score": -0.34,
   "optimal_len": 10,
   "title": "Line Study",
   "grid_size": 10,
   "pieces": 5
  },
  {
   "id": "starter_gentle_9x9",
   "date": "2026-09-02",
   "band": "easy",
   "difficulty_score": -1.16,
   "optimal_len": 10,
   "title": "Gentle Nine",
   "grid_size": 9,
   "pieces": 5
  },
  {
   "id": "starter_big_12x12_b",
   "date": "2026-09-02",
   "band": "medium",
   "difficulty_score": -0.138,
   "optimal_len": 10,
   "title": "Big Board II",
   "grid_size": 12,
   "pieces": 8
  },
  {
   "id": "starter_big_12x12_a",
   "date": "2026-09-02",
   "band": "medium",
   "difficulty_score": -0.138,
   "optimal_len": 10,
   "title": "Big Board I",
   "grid_size": 12,
   "pieces": 8
  }
 ]
}