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      "rule": "H17",
      "up": "9",
      "model": [
        0.12054726479958917,
        0.11733183071598788,
        0.3520585188188818,
        0.12029912840728553,
        0.060975381857599806,
        0.22878787540065593
      ],
      "exact": [
        0.12030985477727106,
        0.11734847635517628,
        0.35185420678249657,
        0.12036839279403887,
        0.06087717596906466,
        0.22924189332195266
      ],
      "maxErrorPercentagePoints": 0.045401792129673435,
      "bustErrorPercentagePoints": -0.045401792129673435
    },
    {
      "decks": 1,
      "rule": "H17",
      "up": "T",
      "model": [
        0.124143704386313,
        0.124143704386313,
        0.124143704386313,
        0.35818625757780237,
        0.0390373214075896,
        0.230345307855669
      ],
      "exact": [
        0.12415591134597795,
        0.12248568110693409,
        0.12442090777303304,
        0.3568688095231401,
        0.03956963453399546,
        0.23249905571691937
      ],
      "maxErrorPercentagePoints": 0.21537478612503602,
      "bustErrorPercentagePoints": -0.21537478612503602
    },
    {
      "decks": 6,
      "rule": "H17",
      "up": "T",
      "model": [
        0.1212694575763801,
        0.1212694575763801,
        0.1212694575763801,
        0.36865621715826163,
        0.037645764196589146,
        0.22988964591600902
      ],
      "exact": [
        0.1212726718472115,
        0.12100690986281365,
        0.12130582749005003,
        0.3684471169558061,
        0.0377289341781858,
        0.23023853966593302
      ],
      "maxErrorPercentagePoints": 0.03488937499240008,
      "bustErrorPercentagePoints": -0.03488937499240008
    }
  ],
  "splitChecks": [
    {
      "pair": "A,A",
      "up": "6",
      "model": 0.6673800949075694,
      "reference": 0.66738,
      "error": 9.490756947005963e-8,
      "matchedRules": true,
      "note": "One card to split aces; no resplit."
    },
    {
      "pair": "A,A",
      "up": "T",
      "model": 0.17968872741114617,
      "reference": 0.179689,
      "error": -2.725888538224197e-7,
      "matchedRules": true,
      "note": "One card to split aces; no resplit."
    },
    {
      "pair": "8,8",
      "up": "6",
      "model": 0.3255333973851646,
      "reference": 0.409329,
      "error": -0.08379560261483537,
      "matchedRules": false,
      "note": "Diagnostic only: engine has no resplits; reference allows up to four hands."
    },
    {
      "pair": "8,8",
      "up": "T",
      "model": -0.4894876231609265,
      "reference": -0.480686,
      "error": -0.008801623160926475,
      "matchedRules": false,
      "note": "Diagnostic only: engine has no resplits; reference allows up to four hands."
    }
  ],
  "insurance": {
    "actual": -0.07692307692307687,
    "expected": -0.07692307692307693
  },
  "limitations": [
    "Not external certification. Independent verifier is authored in this repository.",
    "EV reference cases use infinite proportions; visible cards are not removed.",
    "Finite-deck diagnostics cover dealer outcomes only, before player cards are known, conditioned on no dealer blackjack. They do not validate finite-deck player EV.",
    "No depleted-shoe, full-game house-edge, resplit, surrender, or natural-blackjack payout certification."
  ]
}