The
Snake
hole will go live in approximately
44 hours
. Why not try and solve it ahead of time?
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brainfuck
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Collatz
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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
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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
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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
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
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Dart
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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
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
Time Distance
bizy-coder
213
537ms
3 hours ago
Time Distance
Steffan153
💎
121
376ms
23 hours ago
Polyominoes
MostParsingVex
156
521ms
28 hours ago
Smooth Numbers
HumanoidCPU
153
4,268ms
47 hours ago
Snake
HumanoidCPU
136
400ms
47 hours ago
Hexagonal Spiral
ovs-code
144
405ms
2 days ago
Hexagonal Spiral
bitsandbeyond
98
338ms
2 days ago
Alphabetic Numbers
m-tkach
124
383ms
2 days ago
Snake
pardouin
95
421ms
2 days ago
Snake
AlephSquirrel
173
459ms
2 days ago
Polyominoes
Steffan153
💎
84
511ms
2 days ago
Snake
CornerMercury
99
329ms
2 days ago
Snake
JOrE20
166
411ms
2 days ago
Snake
GolfingSuccess
144
393ms
2 days ago
Snake
Steffan153
89
409ms
3 days ago
Snake
kg583
99
344ms
3 days ago
Langton’s Ant
ovs-code
151
1,099ms
3 days ago
Snake
ovs-code
130
377ms
3 days ago
Abundant Numbers
Edjyzod
79
393ms
3 days ago
Day of Week
JOrE20
67
416ms
3 days ago
Prime Numbers (Long)
JOrE20
44
531ms
3 days ago
Prime Numbers
JOrE20
38
339ms
3 days ago
Prime Numbers
Europe2048
40
357ms
3 days ago
Chess Move Validation
snoozingnewt
119
403ms
4 days ago
Divisors
JOrE20
50
366ms
4 days ago
ln 2
JOrE20
52
356ms
4 days ago
√2
JOrE20
48
353ms
4 days ago
𝑒
JOrE20
47
363ms
4 days ago
𝑒
HumanoidCPU
58
351ms
4 days ago
Catalan Numbers
Europe2048
42
332ms
6 days ago
Tower of Hanoi
albanian-laundromat
57
396ms
7 days ago
Kolakoski Sequence
Europe2048
61
407ms
7 days ago
Foo Fizz Buzz Bar
albanian-laundromat
66
417ms
8 days ago
Fibonacci
JOrE20
36
337ms
8 days ago
Pernicious Numbers
albanian-laundromat
38
369ms
8 days ago
Jacobi Symbol
AlephSquirrel
119
399ms
8 days ago
Abundant Numbers (Long)
Europe2048
65
399ms
8 days ago
Abundant Numbers
Europe2048
64
371ms
8 days ago
Fibonacci
albanian-laundromat
36
349ms
8 days ago
Abundant Numbers
JOrE20
61
379ms
8 days ago
Reversi
CornerMercury
🥈
86
376ms
9 days ago
Day of Week
albanian-laundromat
🥇
66
456ms
9 days ago
Quine
JOrE20
31
355ms
9 days ago
Fractions
JOrE20
73
357ms
9 days ago
Fractions
Europe2048
73
364ms
11 days ago
π
ovs-code
64
425ms
11 days ago
Game of Life
Steffan153
🥇
72
376ms
11 days ago
Tower of Hanoi
JOrE20
53
448ms
11 days ago
Multitap Input
HumanoidCPU
161
346ms
11 days ago
Zodiac Signs
HumanoidCPU
121
388ms
11 days ago
Nim
HumanoidCPU
205
354ms
12 days ago
λ
JayXon
💎
98
1,542ms
12 days ago
Sudoku
bitsandbeyond
🥉
162
495ms
13 days ago
Ascending Primes
kg583
🥈
58
1,331ms
13 days ago
Fibonacci
christos-cantina-security
172
398ms
13 days ago
Thue–Morse Constant
JOrE20
58
356ms
13 days ago
Cubes
bitsandbeyond
142
457ms
14 days ago
Sudoku (Fill-in)
kg583
111
474ms
15 days ago
Arithmetic Numbers
JOrE20
64
2,667ms
15 days ago
τ
JOrE20
59
405ms
15 days ago
Divisors
CornerMercury
🥇
45
394ms
16 days ago
Pernicious Numbers
CornerMercury
🥇
36
418ms
16 days ago
Continued Fractions
HumanoidCPU
91
382ms
17 days ago
Binary Lambda Calculus
bitsandbeyond
256
509ms
21 days ago
Polyominoes
HumanoidCPU
181
405ms
21 days ago
Mahjong
HumanoidCPU
257
451ms
22 days ago
Leap Years
JOrE20
47
399ms
23 days ago
Alphabetic Numbers
JOrE20
105
343ms
23 days ago
Seven Segment
bitsandbeyond
102
396ms
23 days ago
Star Wars Opening Crawl
HumanoidCPU
187
349ms
23 days ago
Chess Move Validation
Steffan153
💎
72
516ms
24 days ago
Pangram Grep
JOrE20
60
458ms
24 days ago
Chess Move Validation
KatieLG
144
589ms
24 days ago
Chess Move Validation
JOrE20
83
443ms
24 days ago
Poker
HumanoidCPU
245
491ms
24 days ago
Ten-pin Bowling
HumanoidCPU
165
471ms
24 days ago
Chess Move Validation
pardouin
109
446ms
25 days ago
12 Days of Christmas
Europe2048
460
440ms
25 days ago
Chess Move Validation
AlephSquirrel
119
595ms
26 days ago
Smooth Numbers
kg583
77
514ms
26 days ago
Arrows
JOrE20
77
495ms
26 days ago
Chess Move Validation
duckyluuk
114
533ms
26 days ago
Chess Move Validation
HumanoidCPU
106
435ms
26 days ago
Ellipse Perimeters
JOrE20
67
378ms
27 days ago
Chess Move Validation
bizy-coder
🥈
73
443ms
1 Sep 2026
Tutorial
zzh1996
53
507ms
31 Aug 2026
United States
namelessiw
86
461ms
31 Aug 2026
Pascal’s Triangle
Europe2048
58
324ms
31 Aug 2026
Nim
m-tkach
93
429ms
31 Aug 2026
Chess Move Validation
ovs-code
112
475ms
31 Aug 2026
QR Decoder
HumanoidCPU
141
401ms
31 Aug 2026
Chess Move Validation
emgordon154
🥉
82
410ms
30 Aug 2026
Chess Move Validation
dokutan
102
513ms
30 Aug 2026
Musical Chords
JOrE20
100
387ms
29 Aug 2026
Chess Move Validation
zzh1996
103
469ms
29 Aug 2026
CSS Grid
GolfingSuccess
171
537ms
28 Aug 2026
Lucky Tickets
JOrE20
72
424ms
27 Aug 2026
Kolakoski Sequence
JOrE20
54
426ms
26 Aug 2026
Apéry’s Constant
HumanoidCPU
385
394ms
25 Aug 2026
Thue–Morse Constant
HumanoidCPU
385
398ms
25 Aug 2026