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 "name": "[[25,5,4]] SAT t3 w6 (a)",
 "code_type": "CSS",
 "n": 25,
 "k": 5,
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 "distance": {
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  "X": {
   "value": 4,
   "confidence": "upper_bound",
   "witness": [
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  },
  "Z": {
   "value": 4,
   "confidence": "upper_bound",
   "witness": [
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 },
 "provenance": {
  "authors": [
   "@MathysRennela"
  ],
  "construction": "Locality-constrained SAT discovery: qubits on a grid, each check anchored within radius 2.0, weight <= 6, t=3 detection CNF (d >= 4 by construction); CaDiCaL enumeration, RIS screening, MILP-exact distance confirmation. Per-code parameters in the construction field below and in the research note.",
  "origin": "submission",
  "date": "2026-09-06",
  "model": "GLM 5.3 Flash",
  "notes": "Distinct construction among the [[25,5,4]] co-entries from the same campaign: different check matrix (fingerprint af05edd55bab), gate dedup passed. Checked against existing board entries at gate time; not equivalent to any of them. MILP-exact d=4 both sides (documented in the research note)."
 },
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