{
  "meta": {
    "note": "True-shape nesting on the 13 classic ESICUP nesting sets turned into bin packing with the published convention (square sheets of 1.1, 1.5 and 2 × the largest piece dimension — Martinez-Sykora et al., EJOR 2017). `lbf` (default, synchronous) and `max` (asynchronous, 60 s) through the LIVE Engine API.",
    "convention": "d_max = the largest length or width of any piece in its initial orientation; SB/MB/LB = square sheets of side 1.1·d_max / 1.5·d_max / 2·d_max; unlimited supply; each set's own allowed rotations; no spacing.",
    "lowerBound": "ceil(total piece area / sheet area) — no plan can use fewer sheets; a weak bound for irregular shapes, so \"not on the bound\" does not mean \"not optimal\".",
    "determinism": "`lbf` is deterministic (one run). `max` is time-boxed; the file keeps every run and the page reports the worst run (maxSheets), never the best.",
    "validation": "Every layout re-placed from the response: all parts placed, every vertex on its sheet, no two parts overlapping by more than the per-instance rounding tolerance (triangulated pieces, separating-axis depth).",
    "source": "https://github.com/JeroenGar/jagua-rs/tree/d4046d5cd7395c2ed630bf9001fcce406a2df8ab/assets (the ESICUP sets in one JSON format; the ESICUP collection is CC0)",
    "sha256": {
      "albano": "cf26a244040ef1a49be1b5f9c947ab0ba14046dcaefdc844d6d57d96970a7542",
      "blaz1": "2f4afb682686de22a27970a8ff6bde586aa9624017b39d643c7d7d4e898aef58",
      "dagli": "e4f87dc490ba96467b0c1df3a0957212db3098813195d42fe5695c03aadea07a",
      "fu": "1bae041893a948bc18dd168c4868093fcb62ad11bdd04e5738008859237b0179",
      "jakobs1": "e6b9df65a387e2912b4fe04ecd619e92815d5096cab5537f757e2838dbdacc1d",
      "jakobs2": "779bd33733ef276ba849a155fb1b11323153564e346057edae9fb06e3c87c30d",
      "mao": "2041da1d6a51b48787d5eb96358b352b841f8e16f6930af961e60a35d6b02d42",
      "marques": "8229c324c3dc9e07e9e489d7e95a35f714d0674e6a3db5a62d95fa795b5a2768",
      "shapes0": "3d156bf8de95dd8b8f00cf37d23fdbd8e924594b33329142854507d557c01488",
      "shapes1": "dec476d6eb8e7132356a0e5560ec4c83787704fd327b76147020617e0d8353c5",
      "shirts": "3d35fc0b2127a6d07793bba3d867cdc7b4c88837b991207d849f8f3383598557",
      "swim": "b296788340a3489c3d304b79ad8ca561735fe4ee3f79554f5170da8fcc4f3a0d",
      "trousers": "c2a91d1f1687f540764ddc14103eb03dc5f54ac135194ab9c23b4d50c83bb68e"
    },
    "server": "https://api.cutoptim.com",
    "measuredAt": "2026-09-22",
    "engineVersion": "1.0.0+nest-d4046d5-3780cda5",
    "runsPerInstance": 2,
    "budgetMs": 60000,
    "script": "scripts/research/nest-esicup-benchmark.ts",
    "reproduce": "CO_KEY=<Engine API key> CACHE=<file> npx tsx scripts/research/nest-esicup-benchmark.ts (RUNS=2 by default)"
  },
  "summary": {
    "instances": 39,
    "valid": 39,
    "allPlaced": 39,
    "lbfOnBound": 7,
    "maxOnBound": 11,
    "maxFewerThanLbf": 4,
    "lbfSheets": 248,
    "maxSheetsWorst": 244,
    "boundSheets": 153
  },
  "rows": [
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        "density": 0.6383
      },
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        "sheets": [
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          6
        ],
        "placed": 24
      },
      "valid": true,
      "maxPenetration": 0,
      "tol": 0.12196478596140954
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    {
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    {
      "id": "swim-SB",
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