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

    georgehulme

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    31 / 133 Holes

    🔣

    3 / 65 Langs

    🏆

    16 / 116 Cheevos

    📅

    12 Days of Christmas
    179th
    Abundant Numbers
    298th
    Arrows
    144th
    Christmas Trees
    227th
    Collatz
    227th
    Diamonds
    243rd
    Divisors
    1st
    Emirp Numbers
    394th
    Evil Numbers
    604th
    Evil Numbers (Long)
    388th
    Fibonacci
    267th206th118th
    Fizz Buzz
    912th97th
    Foo Fizz Buzz Bar
    537th
    Fractions
    268th
    Intersection
    153rd
    ISBN
    177th
    Leap Years
    610th
    Look and Say
    390th
    Niven Numbers
    430th
    Niven Numbers (Long)
    245th
    Number Spiral
    128th
    Odious Numbers
    328th
    Odious Numbers (Long)
    270th
    Ordinal Numbers
    137th
    Prime Numbers
    788th
    Quine
    87th
    π
    88th
    τ
    86th
    φ
    122nd
    √2
    1st
    𝑒
    1st