{
 "schema_version": "0.1",
 "name": "[[16,4,4]] SAT t3 w6 (a)",
 "code_type": "CSS",
 "n": 16,
 "k": 4,
 "checks": {
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    5,
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    11,
    12
   ],
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    4,
    6,
    8,
    10,
    13
   ],
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    6,
    7,
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    14
   ],
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    13,
    14
   ],
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  "Z": [
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   ],
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    11,
    13,
    15
   ],
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 },
 "distance": {
  "d": 4,
  "X": {
   "value": 4,
   "confidence": "upper_bound",
   "witness": [
    1,
    6,
    8,
    9
   ]
  },
  "Z": {
   "value": 4,
   "confidence": "upper_bound",
   "witness": [
    8,
    9,
    13,
    15
   ]
  }
 },
 "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 [[16,4,4]] co-entries from the same campaign: different check matrix (fingerprint 3440fc480e2f), 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)."
 },
 "family": "other",
 "locality": {
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  "layers": 1
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}