{
 "schema_version": "0.1",
 "name": "local-sat 7x7 G=15 w6 t2 model 0",
 "code_type": "CSS",
 "n": 49,
 "k": 19,
 "checks": {
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    15,
    16,
    18,
    30
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    38,
    42,
    43,
    44
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    39,
    41,
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    32,
    33,
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    38,
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   [
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    22,
    23,
    29,
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    9,
    10,
    19,
    25
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   [
    0,
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    16,
    21,
    28
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   [
    20,
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    32,
    34,
    41,
    48
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   [
    11,
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    17,
    19,
    25
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  "Z": [
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    16,
    23,
    24,
    28,
    36
   ],
   [
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    4,
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    10,
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   [
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    26,
    30,
    33,
    39,
    40
   ],
   [
    26,
    27,
    33,
    34,
    41,
    48
   ],
   [
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    24,
    25,
    32,
    34,
    40
   ],
   [
    23,
    29,
    31,
    33,
    38,
    45
   ],
   [
    1,
    3,
    9,
    11,
    15,
    17
   ],
   [
    31,
    39,
    43,
    44,
    46
   ],
   [
    32,
    37,
    38,
    41,
    46,
    47
   ],
   [
    29,
    35,
    36,
    37,
    42,
    43
   ],
   [
    6,
    11,
    12,
    13,
    20,
    27
   ],
   [
    2,
    8,
    16,
    22,
    23,
    30
   ],
   [
    5,
    11,
    12,
    13,
    17,
    25
   ],
   [
    0,
    7,
    9,
    10,
    14
   ],
   [
    7,
    14,
    15,
    21,
    22,
    35
   ]
  ]
 },
 "distance": {
  "d": 3,
  "X": {
   "value": 3,
   "confidence": "upper_bound",
   "witness": [
    4,
    12,
    13
   ]
  },
  "Z": {
   "value": 3,
   "confidence": "upper_bound",
   "witness": [
    18,
    30,
    45
   ]
  }
 },
 "provenance": {
  "authors": [
   "@vprusso"
  ],
  "construction": "SAT search (research/local_sat.py build_local_cnf, n_side=7, G=15, max_weight=6, t=2 detection, anchor radius 2.0, shared_t3 encoding, CaDiCaL 1.5.3 via python-sat) over 2D-local CSS codes on a 7x7 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": "2026-09-24",
  "model": "Claude Fable 5.1 (Claude Code)",
  "notes": "Phase 0 triage of the 2D-local SAT t=2+ campaign (issue #2024); instance s7_G15_w6_t2. Distance is an upper bound from the kit's RIS witness search at 20000 trials per side."
 },
 "family": "local-sat-css",
 "locality": {
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  "layers": 1
 }
}