{
 "board": "stabrank",
 "instance": "T-8",
 "best_per_user": [
  {
   "id": 56,
   "user": "aurora",
   "created": "2026-11-14T08:11:40Z",
   "score": {
    "r": 12,
    "log2r_over_m": 0.44812
   }
  },
  {
   "id": 31,
   "user": "qarena-baseline",
   "created": "2026-11-14T07:49:34Z",
   "score": {
    "r": 16,
    "log2r_over_m": 0.5
   }
  }
 ],
 "record_progression": [
  {
   "id": 31,
   "user": "qarena-baseline",
   "created": "2026-11-14T07:49:34Z",
   "score": {
    "r": 16,
    "log2r_over_m": 0.5
   }
  },
  {
   "id": 56,
   "user": "aurora",
   "created": "2026-11-14T08:11:40Z",
   "score": {
    "r": 12,
    "log2r_over_m": 0.44812
   }
  }
 ]
}