The
Snake
hole will go live in approximately
26 hours
. Why not try and solve it ahead of time?
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Nim
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Odious Numbers (Long)
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PalindromemordnilaP
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Pernicious Numbers (Long)
Poker
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Quine
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Reversi
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Rule 110
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Set
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Time Distance
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Transpose Sentence
Trinomial Triangle
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United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
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γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Binary Lambda Calculus
Chess960 Decoder
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Crossword
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Floyd-Steinberg Dithering
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Highly Composite Numbers
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Langton’s Ant
Lyndon Factorization
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Numbrix
Odd Polyomino Tiling
p-adic Expansion
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Tutorial
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D
Dart
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iogii
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Janet
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jq
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Raku
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sed
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V
VimL
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05AB1E
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
ZuzuScript
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All
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
Leap Years
edsrzf
🥉
51
4ms
2 days ago
Pernicious Numbers
snoozingnewt
49
4ms
2 days ago
CSS Colors
edsrzf
💎
657
7ms
6 days ago
Gijswijt’s Sequence
Steffan153
🥈
76
5ms
6 days ago
CSS Colors
kg583
🥈
661
67ms
6 days ago
Game of Life
edsrzf
🥇
103
5ms
11 days ago
Game of Life
Steffan153
🥇
103
6ms
11 days ago
Pernicious Numbers
albanian-laundromat
41
4ms
12 days ago
Rock-paper-scissors-Spock-lizard
christos-cantina-security
505
5ms
14 days ago
Fibonacci
christos-cantina-security
73
4ms
14 days ago
Zodiac Signs
edsrzf
🥈
157
7ms
19 days ago
Sierpiński Triangle
edsrzf
🥉
71
4ms
22 days ago
Chess Move Validation
Steffan153
🥇
114
7ms
22 days ago
Chess Move Validation
edsrzf
🥇
114
7ms
22 days ago
Number Spiral
edsrzf
🥉
111
4ms
24 days ago
Gijswijt’s Sequence
edsrzf
💎
73
4ms
25 days ago
Gijswijt’s Sequence
kg583
🥈
76
5ms
26 days ago
Set
kg583
🥈
110
50ms
27 days ago
Tutorial
zzh1996
58
4ms
1 Sep 2026
Emirp Numbers
Steffan153
🥉
61
4ms
31 Aug 2026
Van Eck Sequence
edsrzf
🥉
61
5ms
31 Aug 2026
Card Number Validation
edsrzf
💎
66
5ms
31 Aug 2026
Card Number Validation
Steffan153
🥈
70
5ms
31 Aug 2026
Happy Numbers (Long)
edsrzf
🥇
75
14ms
31 Aug 2026
Niven Numbers (Long)
edsrzf
🥇
52
14ms
31 Aug 2026
Niven Numbers (Long)
kg583
🥇
52
13ms
31 Aug 2026
Emirp Numbers
edsrzf
72
4ms
31 Aug 2026
Card Number Validation
kg583
🥉
82
4ms
31 Aug 2026
Happy Numbers (Long)
kg583
🥇
75
15ms
31 Aug 2026
Foo Fizz Buzz Bar
edsrzf
💎
80
6ms
30 Aug 2026
Collatz
edsrzf
🥇
76
12ms
30 Aug 2026
Time Distance
kg583
💎
150
6ms
30 Aug 2026
Ordinal Numbers
edsrzf
🥉
84
5ms
30 Aug 2026
Look and Say
edsrzf
💎
76
5ms
28 Aug 2026
Abundant Numbers
edsrzf
48
4ms
27 Aug 2026
Prime Numbers (Long)
Florian-Mt
78
535ms
26 Aug 2026
Prime Numbers
Florian-Mt
77
4ms
26 Aug 2026
Niven Numbers
albanian-laundromat
51
4ms
26 Aug 2026
Kolakoski Constant
edsrzf
🥈
170
234ms
25 Aug 2026
Kolakoski Sequence
edsrzf
🥈
79
4ms
25 Aug 2026
Thue–Morse Constant
HumanoidCPU
1,011
4ms
24 Aug 2026
brainfuck
kg583
💎
130
80ms
23 Aug 2026
Musical Chords
edsrzf
💎
117
11ms
21 Aug 2026
Tutorial
quasar098
146
4ms
20 Aug 2026
Emojify
scpchicken
405
4ms
20 Aug 2026
DFA Simulator
scpchicken
882
5ms
20 Aug 2026
Day of Week
scpchicken
797
7ms
20 Aug 2026
CSS Colors
scpchicken
3,428
4ms
20 Aug 2026
Continued Fractions
scpchicken
781
4ms
20 Aug 2026
Connect Four
scpchicken
🥈
708
12ms
20 Aug 2026
Odious Numbers (Long)
kg583
57
4ms
20 Aug 2026
Evil Numbers (Long)
kg583
55
5ms
20 Aug 2026
Time Distance
edsrzf
🥉
283
6ms
19 Aug 2026
Card Number Validation
scpchicken
521
5ms
16 Aug 2026
Calendar
scpchicken
🥉
912
5ms
16 Aug 2026
brainfuck
scpchicken
954
5ms
16 Aug 2026
Billiards
scpchicken
867
4ms
16 Aug 2026
Arrows
scpchicken
656
5ms
16 Aug 2026
Arabic to Roman
scpchicken
943
9ms
16 Aug 2026
Foo Fizz Buzz Bar
scpchicken
6,727
4ms
16 Aug 2026
Evil Numbers (Long)
scpchicken
2,459
3ms
16 Aug 2026
Evil Numbers
scpchicken
103
4ms
16 Aug 2026
Farey Sequence
scpchicken
5,137
3ms
16 Aug 2026
Fibonacci
scpchicken
173
4ms
16 Aug 2026
Factorial Factorisation
scpchicken
871
4ms
16 Aug 2026
Emirp Numbers (Long)
scpchicken
1,404
3ms
16 Aug 2026
Emirp Numbers
scpchicken
180
3ms
16 Aug 2026
Divisors
scpchicken
1,274
3ms
16 Aug 2026
Diamonds
scpchicken
1,200
4ms
16 Aug 2026
Collatz
scpchicken
4,234
4ms
16 Aug 2026
Christmas Trees
scpchicken
608
3ms
16 Aug 2026
Cubes
scpchicken
2,946
4ms
16 Aug 2026
Alphabetic Numbers
scpchicken
4,904
4ms
16 Aug 2026
Gijswijt’s Sequence
scpchicken
3,008
3ms
16 Aug 2026
Catalan’s Constant
scpchicken
1,012
3ms
16 Aug 2026
Catalan Numbers
scpchicken
2,980
4ms
16 Aug 2026
Ascending Primes
scpchicken
620
4ms
16 Aug 2026
Arithmetic Numbers
scpchicken
45,338
4ms
16 Aug 2026
Abundant Numbers (Long)
scpchicken
1,218
3ms
16 Aug 2026
Abundant Numbers
scpchicken
217
4ms
16 Aug 2026
99 Bottles of Beer
scpchicken
12,192
4ms
16 Aug 2026
24 Game
scpchicken
13,802
4ms
16 Aug 2026
Hexdump
kg583
180
5ms
14 Aug 2026
Tower of Hanoi
Steffan153
🥇
65
4ms
13 Aug 2026
Arrows
Steffan153
🥈
106
6ms
12 Aug 2026
Billiards
edsrzf
💎
112
7ms
12 Aug 2026
Rule 110
edsrzf
💎
102
9ms
11 Aug 2026
Rule 110
Steffan153
🥈
104
7ms
11 Aug 2026
Billiards
kg583
🥉
115
7ms
11 Aug 2026
Billiards
Steffan153
🥈
114
7ms
11 Aug 2026
Yellowstone Permutation
HumanoidCPU
4,019
4ms
8 Aug 2026
Odious Numbers (Long)
edsrzf
💎
49
4ms
5 Aug 2026
Evil Numbers (Long)
edsrzf
💎
49
4ms
5 Aug 2026
Ulam Sequence
edsrzf
🥈
78
46ms
3 Aug 2026
Ulam Sequence
Steffan153
💎
75
718ms
3 Aug 2026
Quine
JOrE20
35
4ms
1 Aug 2026
Pernicious Numbers (Long)
Steffan153
🥇
62
9ms
1 Aug 2026
Pernicious Numbers (Long)
edsrzf
🥇
62
9ms
1 Aug 2026
12 Days of Christmas
scpchicken
💎
358
4ms
31 Jul 2026
Ulam Sequence
dokutan
🥉
420
4ms
31 Jul 2026