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    The Calendar hole will go live in approximately . Why not try and solve it ahead of time?

    UnderKoen (he/him) 🇳🇱

    90,647
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    💎 SQL

    122 / 123 Holes

    🔣

    1 / 62 Langs

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    71 / 99 Cheevos

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    Card Number Validation in SQL in Bytes Play Hole

    1st in SQL and 133rd overall.

    Last tested .

    Runtime of .

    Bytes Chars Submitted
    86 86
    87 87
    88 88
    91 91
    101 101
    102 102
    107 107
    115 115