Code puzzle solver

digits = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }


def one_in_place(a, b, c):
    return [
        [{a},          digits - {b}, digits - {c}],
        [digits - {a}, {b},          digits - {c}],
        [digits - {a}, digits - {b}, {c}]
    ]

def one_wrong_place(a, b, c):
    remaining = digits - {a, b, c}
    return [
        [{b, c},    remaining, remaining],
        [remaining, {a, c},    remaining],
        [remaining, remaining, {a, b}]
    ]

def two_wrong_place(a, b, c):
    remaining = digits - {a, b, c}
    return [
        [{b, c}, {a, c}, remaining],
        [{b, c}, remaining, {a, c}],
        [remaining, {a, c}, {a, b}]
    ]

def all_wrong(a, b, c):
    remaining = digits - {a, b, c}
    return [ [remaining, remaining, remaining] ]


rules = [
    one_in_place(6, 8, 2),
    one_wrong_place(6, 1, 4),
    two_wrong_place(2, 0, 6),
    all_wrong(7, 3, 8),
    one_wrong_place(7, 8, 0)
]


for a in range(10):
    for b in range(10):
        for c in range(10):
            match = True
            for rule in rules:
                rule_match = False
                for set in rule:
                    if a in set[0] and b in set[1] and c in set[2]:
                        rule_match = True
                if not rule_match:
                    match = False
                    break
            if match:
                print(f"Matching code found: {a}{b}{c}")