alphametics.json

{
    "solve": {
        "description": "Solve the alphametics puzzle",
        "cases": [
            {
                "description": "solve short puzzle",
                "puzzle": "I + BB == ILL",
                "expected": { "I": 1, "B": 9, "L": 0 }
            },
            {
                "description": "solve long puzzle",
                "puzzle": "SEND + MORE == MONEY",
                "expected": { "S": 9, "E": 5, "N": 6, "D": 7, "M": 1, "O": 0, "R": 8, "Y": 2 }
            },
            {
                "description": "solve puzzle with multiplication",
                "puzzle": "IF * DR == DORI",
                "expected": { "I": 8, "F": 2, "D": 3, "R": 9, "O": 1 }
            },
            {
                "description": "solve puzzle with exponents",
                "puzzle": "PI * R ^ 2 == AREA",
                "expected": { "P": 9, "I": 6, "R": 7, "A": 4, "E": 0 }
            },
            {
                "description": "solution must have unique value for each letter",
                "puzzle": "A == B",
                "expected": null
            },
            {
                "description": "leading zero solution is invalid",
                "puzzle": "ACA + DD == BD",
                "expected": null
            }
        ]
    }
}