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    The Gray Code Decoder and Gray Code Encoder holes will go live in approximately . Why not try and solve them ahead of time?

    XenThe 🇬🇧

    36,914
    37,650
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    63 / 126 Holes

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    4 / 64 Langs

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    26 / 109 Cheevos

    📅

    12 Days of Christmas
    113th
    99 Bottles of Beer
    85th
    Arabic to Roman
    24th
    Ascending Primes
    33rd
    Card Number Validation
    62nd
    Catalan Numbers
    89th 393rd
    Catalan’s Constant
    60th
    Christmas Trees
    95th
    Collatz
    29th
    CSS Colors
    140th
    Day of Week
    101st
    Diamonds
    158th
    Divisors
    88th
    Emirp Numbers
    198th
    Emirp Numbers (Long)
    79th
    Evil Numbers
    86th
    Evil Numbers (Long)
    50th
    Farey Sequence
    61st
    Fibonacci
    144th
    Fizz Buzz
    1st9th 1st
    Foo Fizz Buzz Bar
    33rd
    Game of Life
    50th
    Happy Numbers
    68th
    Happy Numbers (Long)
    114th
    Hilbert Curve
    23rd
    Intersection
    84th
    Kolakoski Sequence
    72nd
    Leap Years
    105th 842nd
    Look and Say
    42nd
    Lucky Numbers
    58th
    Lucky Tickets
    51st
    Mandelbrot
    29th
    Minesweeper
    24th
    N Queens
    47th
    Niven Numbers
    260th
    Niven Numbers (Long)
    96th
    Number Spiral
    59th
    Odious Numbers
    107th
    Odious Numbers (Long)
    58th
    Ordinal Numbers
    1st
    Pascal’s Triangle
    66th
    Prime Numbers
    177th
    Prime Numbers (Long)
    95th
    Quine
    32nd
    Repeating Decimals
    38th
    Rijndael S-box
    57th
    Roman to Arabic
    84th
    ROT13
    41st
    Rule 110
    54th
    Scrambled Sort
    42nd
    Seven Segment
    79th
    SI Units
    31st
    Sierpiński Triangle
    39th
    Spelling Numbers
    76th
    Time Distance
    53rd
    Tongue-twisters
    103rd
    Vampire Numbers
    53rd
    λ
    85th
    π
    88th
    τ
    66th
    φ
    67th
    √2
    78th
    𝑒
    84th