{
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 "name": "local-sat 9x9 G=25 w6 t2 model 0",
 "code_type": "CSS",
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 "k": 31,
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 "distance": {
  "d": 3,
  "X": {
   "value": 3,
   "confidence": "upper_bound",
   "witness": [
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    71,
    79
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  },
  "Z": {
   "value": 3,
   "confidence": "upper_bound",
   "witness": [
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 },
 "provenance": {
  "authors": [
   "@vprusso"
  ],
  "construction": "SAT search (research/local_sat.py build_local_cnf, n_side=9, G=25, max_weight=6, t=2 detection, anchor radius 2.0, shared_t3 encoding, CaDiCaL 1.9.5 via python-sat) over 2D-local CSS codes on a 9x9 grid; each check is anchored at a grid site and acts within radius 2.0 of it, so the interaction radius is at most 4.0 by construction. Model index 0 of the enumeration; distance is a witness-backed upper bound.",
  "references": [],
  "date": "2026-09-26",
  "notes": "Phase 1 of the 2D-local SAT t=2+ campaign (issue #2024); instance s9_G25_w6_t2. Distance is an upper bound from the kit's RIS witness search at 20000 trials per side.",
  "model": "Claude Fable 5.1 (Claude Code)"
 },
 "family": "local-sat-css",
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