The
Snake
hole will go live in approximately
37 hours
. Why not try and solve it ahead of time?
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brainfuck
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N Queens
Nim
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Number Spiral
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Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Partition Numbers
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Poker
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Prime Numbers
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Proximity Grid
QR Decoder
Quine
Recamán
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Reversi
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Roman to Arabic
ROT13
Rule 110
Scrambled Sort
Set
Seven Segment
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Time Distance
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Topological Sort
Tower of Hanoi
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United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Binary Lambda Calculus
Chess960 Decoder
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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
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Tutorial
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ALGOL 68
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brainfuck
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Common Lisp
Crystal
D
Dart
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Forth
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Groovy
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iogii
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Janet
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jq
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PowerShell
Prolog
Python
R
Raku
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Rust
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sed
SQL
Swift
Tcl
TeX
V
VimL
Wren
Zig
Experimental Language
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
Hole
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
Snake
madex
165
2,202ms
38 hours ago
Snake
pardouin
165
2,136ms
2 days ago
Tower of Hanoi
denkyuu1
70
1,967ms
4 days ago
Leap Years
albanian-laundromat
47
1,960ms
4 days ago
Scrambled Sort
jipsong
111
2,176ms
5 days ago
Niven Numbers (Long)
jipsong
🥇
54
1,983ms
5 days ago
Leap Years
jipsong
47
2,057ms
5 days ago
Catalan Numbers
jipsong
🥇
76
2,091ms
5 days ago
Divisors
jipsong
64
1,955ms
6 days ago
Abundant Numbers
jipsong
61
2,002ms
6 days ago
Abundant Numbers (Long)
jipsong
62
1,958ms
7 days ago
Sierpiński Triangle
Steffan153
🥈
64
2,054ms
7 days ago
Tower of Hanoi
albanian-laundromat
🥇
66
1,925ms
7 days ago
Arithmetic Numbers
jipsong
🥈
68
2,184ms
7 days ago
Pascal’s Triangle
jipsong
91
2,157ms
7 days ago
Quine
zzh1996
💎
60
2,093ms
9 days ago
Alphabetic Numbers
Steffan153
🥈
135
2,145ms
9 days ago
Partition Numbers
edsrzf
🥉
78
2,033ms
9 days ago
ASCII Table
jipsong
148
2,023ms
10 days ago
Alphabetic Numbers
edsrzf
💎
134
2,189ms
10 days ago
Mandelbrot
edsrzf
🥉
133
2,428ms
11 days ago
Game of Life
edsrzf
🥇
94
2,225ms
11 days ago
Repeating Decimals
jipsong
198
2,406ms
11 days ago
Game of Life
Steffan153
🥇
94
2,238ms
12 days ago
Pangram Grep
jipsong
🥇
62
2,260ms
13 days ago
Pangram Grep
christos-cantina-security
71
2,192ms
13 days ago
Tower of Hanoi
christos-cantina-security
73
2,134ms
13 days ago
Pernicious Numbers
CornerMercury
43
2,014ms
13 days ago
Fibonacci
christos-cantina-security
56
1,997ms
13 days ago
Pernicious Numbers
albanian-laundromat
43
2,097ms
14 days ago
Day of Week
jipsong
🥇
60
2,214ms
14 days ago
Gray Code Encoder
jipsong
🥇
60
2,247ms
14 days ago
Fractions
jipsong
🥇
94
2,174ms
14 days ago
Ordinal Numbers
jipsong
96
2,016ms
15 days ago
𝑒
jipsong
109
2,105ms
17 days ago
Niven Numbers (Long)
albanian-laundromat
66
2,225ms
18 days ago
Musical Chords
madex
131
2,310ms
23 days ago
Chess Move Validation
Steffan153
🥈
102
2,288ms
23 days ago
Chess Move Validation
edsrzf
💎
100
2,243ms
24 days ago
Gray Code Encoder
HumanoidCPU
71
2,232ms
26 days ago
Tutorial
zzh1996
50
2,293ms
27 days ago
Look and Say
jipsong
🥉
94
2,077ms
27 days ago
Chess Move Validation
madex
132
2,325ms
30 Aug 2026
Gray Code Encoder
albanian-laundromat
61
2,307ms
29 Aug 2026
Chess Move Validation
pardouin
🥉
117
2,414ms
29 Aug 2026
Fibonacci
jipsong
49
2,144ms
29 Aug 2026
Abundant Numbers (Long)
albanian-laundromat
73
2,250ms
25 Aug 2026
Rijndael S-box
MostParsingVex
🥉
222
2,263ms
24 Aug 2026
Thue–Morse Constant
HumanoidCPU
1,004
1,936ms
24 Aug 2026
QR Decoder
MostParsingVex
221
2,192ms
23 Aug 2026
ISBN
edsrzf
🥉
82
2,228ms
23 Aug 2026
Fractions
HumanoidCPU
123
2,257ms
22 Aug 2026
Tutorial
quasar098
138
2,161ms
20 Aug 2026
Emojify
scpchicken
483
2,125ms
20 Aug 2026
DFA Simulator
scpchicken
716
2,363ms
20 Aug 2026
Day of Week
scpchicken
615
2,416ms
20 Aug 2026
CSS Colors
scpchicken
4,038
2,373ms
20 Aug 2026
Continued Fractions
scpchicken
665
2,363ms
20 Aug 2026
Connect Four
scpchicken
633
2,308ms
20 Aug 2026
Seven Segment
bitsandbeyond
🥉
112
2,179ms
18 Aug 2026
Taxicab Numbers
pardouin
💎
97
2,341ms
16 Aug 2026
Card Number Validation
scpchicken
554
2,385ms
16 Aug 2026
Calendar
scpchicken
812
2,385ms
16 Aug 2026
brainfuck
scpchicken
987
2,227ms
16 Aug 2026
Billiards
scpchicken
1,052
2,509ms
16 Aug 2026
Arrows
scpchicken
1,003
2,496ms
16 Aug 2026
Arabic to Roman
scpchicken
928
2,256ms
16 Aug 2026
Foo Fizz Buzz Bar
scpchicken
5,731
2,117ms
16 Aug 2026
Evil Numbers (Long)
scpchicken
1,962
2,051ms
16 Aug 2026
Evil Numbers
scpchicken
82
1,850ms
16 Aug 2026
Farey Sequence
scpchicken
4,366
1,933ms
16 Aug 2026
Fibonacci
scpchicken
146
2,122ms
16 Aug 2026
Factorial Factorisation
scpchicken
874
2,066ms
16 Aug 2026
Emirp Numbers (Long)
scpchicken
1,168
1,858ms
16 Aug 2026
Emirp Numbers
scpchicken
148
1,914ms
16 Aug 2026
Divisors
scpchicken
1,178
2,166ms
16 Aug 2026
Diamonds
scpchicken
1,115
2,092ms
16 Aug 2026
Collatz
scpchicken
3,238
1,877ms
16 Aug 2026
Christmas Trees
scpchicken
557
1,945ms
16 Aug 2026
Cubes
scpchicken
2,839
2,074ms
16 Aug 2026
Alphabetic Numbers
scpchicken
3,907
1,999ms
16 Aug 2026
Gijswijt’s Sequence
scpchicken
2,012
1,888ms
16 Aug 2026
Catalan’s Constant
scpchicken
1,015
1,955ms
16 Aug 2026
Catalan Numbers
scpchicken
2,884
2,113ms
16 Aug 2026
ASCII Table
scpchicken
289
2,119ms
16 Aug 2026
Ascending Primes
scpchicken
524
1,889ms
16 Aug 2026
Arithmetic Numbers
scpchicken
37,654
1,983ms
16 Aug 2026
Abundant Numbers
scpchicken
175
2,095ms
16 Aug 2026
99 Bottles of Beer
scpchicken
11,897
2,027ms
16 Aug 2026
24 Game
scpchicken
12,444
1,938ms
16 Aug 2026
12 Days of Christmas
scpchicken
718
2,268ms
15 Aug 2026
Lyndon Factorization
madex
99
2,241ms
15 Aug 2026
Niven Numbers
qpwoeirut
47
2,091ms
14 Aug 2026
Forsyth–Edwards Notation
dokutan
226
2,260ms
14 Aug 2026
Prime Numbers (Long)
qpwoeirut
53
2,101ms
13 Aug 2026
Prime Numbers
qpwoeirut
51
2,260ms
13 Aug 2026
Tutorial
dokutan
74
2,195ms
12 Aug 2026
Nim
albanian-laundromat
🥉
108
2,177ms
9 Aug 2026
Yellowstone Permutation
HumanoidCPU
4,016
2,026ms
8 Aug 2026
Tower of Hanoi
edsrzf
🥇
66
2,095ms
5 Aug 2026