The
Snake
hole will go live in approximately
25 hours
. Why not try and solve it ahead of time?
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Hy
Knight
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12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Alphabetic Numbers
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Chess Move Validation
Christmas Trees
Collatz
Connect Four
Continued Fractions
CSS Colors
Cubes
Day of Week
DFA Simulator
Diamonds
Divisors
Emirp Numbers
Emirp Numbers (Long)
Emojify
Evil Numbers
Evil Numbers (Long)
Factorial Factorisation
Farey Sequence
Fibonacci
Fizz Buzz
Foo Fizz Buzz Bar
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
Gray Code Decoder
Gray Code Encoder
Happy Numbers
Happy Numbers (Long)
Hexdump
Hilbert Curve
Intersection
Inventory Sequence
ISBN
Jacobi Symbol
Kaprekar Numbers
Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
Lucky Numbers
Lucky Tickets
Mahjong
Mandelbrot
Maze
Medal Tally
Minesweeper
Morse Decoder
Morse Encoder
Multitap Input
Musical Chords
N Queens
Nim
Niven Numbers
Niven Numbers (Long)
Number Spiral
Odious Numbers
Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Partition Numbers
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Poker
Polyominoes
Prime Numbers
Prime Numbers (Long)
Proximity Grid
QR Decoder
Quine
Recamán
Repeating Decimals
Reverse Polish Notation
Reversi
Rijndael S-box
Rock-paper-scissors-Spock-lizard
Roman to Arabic
ROT13
Rule 110
Scrambled Sort
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars GPT
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Taxicab Numbers
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Topological Sort
Tower of Hanoi
Transpose Sentence
Trinomial Triangle
Ulam Sequence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Binary Lambda Calculus
Chess960 Decoder
Chess960 Encoder
Crossword
CSS Colors (Inverse)
CSS Grid
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
Langton’s Ant
Lyndon Factorization
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Thue–Morse Constant
Turtle
Tutorial
Yellowstone Permutation
Hole
Golfer
Chars
Time
Submitted
Evil Numbers (Long)
Steffan153
43
91ms
30 hours ago
Evil Numbers (Long)
snoozingnewt
🥇
39
67ms
2 days ago
Evil Numbers (Long)
ovs-code
🥇
39
73ms
13 days ago
Evil Numbers (Long)
HumanoidCPU
1,010
73ms
17 Aug 2026
Evil Numbers (Long)
scpchicken
1,959
74ms
16 Aug 2026
Evil Numbers (Long)
madeforlosers
1,960
82ms
22 Apr 2026
Evil Numbers (Long)
KatieLG
1,625
75ms
30 Nov 2025
Evil Numbers (Long)
CaedenHarper
1,956
75ms
16 Aug 2025
Evil Numbers (Long)
dokutan
50
87ms
17 Jul 2025
Evil Numbers (Long)
victorz-ca
50
102ms
1 Jul 2025
Evil Numbers (Long)
sean-niemann
44
114ms
2 Jun 2025
Evil Numbers (Long)
pardouin
44
115ms
16 Mar 2025
Evil Numbers (Long)
rboath
52
108ms
11 Dec 2024
Evil Numbers (Long)
Shanethegamer
65
86ms
23 Oct 2024
Evil Numbers (Long)
Mabeloid
1,960
77ms
17 Sep 2024
Evil Numbers (Long)
DialFrost
44
112ms
1 Aug 2024
Evil Numbers (Long)
dillon-duncando
77
83ms
9 Mar 2024
Evil Numbers (Long)
Yewzir
63
83ms
18 Nov 2023
Evil Numbers (Long)
msbranicky
63
83ms
14 Aug 2023
Evil Numbers (Long)
Alessandro-Balconi
48
103ms
12 Jul 2023
Evil Numbers (Long)
retrohun
1,960
75ms
27 Dec 2022
Evil Numbers (Long)
KatieLG-Transpiler
2,460
73ms
12 Dec 2022
Evil Numbers (Long)
MeWhenI
62
83ms
12 Dec 2022
Evil Numbers (Long)
Lydxn
🥇
39
75ms
12 Dec 2022