The
Snake
hole will go live in approximately
20 hours
. Why not try and solve it ahead of time?
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brainfuck
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Nim
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Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
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Pernicious Numbers (Long)
Poker
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Proximity Grid
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Quine
Recamán
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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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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
CSS Colors (Inverse)
CSS Grid
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Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
Langton’s Ant
Lyndon Factorization
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Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
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sed
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TeX
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
albanian-laundromat
55
128ms
5 days ago
Tower of Hanoi
albanian-laundromat
64
123ms
7 days ago
Gijswijt’s Sequence
Steffan153
🥈
83
120ms
7 days ago
Catalan Numbers
prestosilver
592
772ms
7 days ago
ROT13
prestosilver
118
392ms
8 days ago
Game of Life
edsrzf
💎
114
403ms
12 days ago
Tutorial
zzh1996
76
397ms
13 days ago
Hilbert Curve
prestosilver
💎
297
398ms
13 days ago
Pernicious Numbers
albanian-laundromat
43
130ms
13 days ago
Arrows
christos-cantina-security
365
385ms
14 days ago
Fibonacci
christos-cantina-security
40
128ms
14 days ago
Nim
christos-cantina-security
172
356ms
14 days ago
24 Game
zzh1996
💎
315
1,092ms
15 days ago
CSS Colors
christos-cantina-security
61
372ms
15 days ago
Pernicious Numbers
CornerMercury
43
129ms
15 days ago
Hexagonal Spiral
bitsandbeyond
253
135ms
21 days ago
Hexdump
edsrzf
💎
171
418ms
22 days ago
Hexdump
hourianto
🥈
180
437ms
22 days ago
Chess Move Validation
edsrzf
💎
143
480ms
22 days ago
Fizz Buzz
hourianto
🥉
63
139ms
23 days ago
Alphabetic Numbers
hourianto
💎
188
146ms
23 days ago
Sudoku
bitsandbeyond
🥈
427
431ms
25 days ago
Nim
Natanaelel
163
388ms
26 days ago
Morse Encoder
janAkali
298
364ms
27 days ago
Rijndael S-box
prestosilver
262
414ms
27 days ago
Morse Encoder
prestosilver
335
388ms
27 days ago
Morse Decoder
prestosilver
365
384ms
27 days ago
Seven Segment
bitsandbeyond
132
341ms
27 days ago
Chess Move Validation
janAkali
🥈
164
454ms
27 days ago
Chess Move Validation
albanian-laundromat
175
420ms
1 Sep 2026
Chess Move Validation
prestosilver
🥉
168
436ms
1 Sep 2026
Tutorial
prestosilver
79
402ms
31 Aug 2026
Musical Chords
janAkali
351
435ms
31 Aug 2026
Hilbert Curve
janAkali
🥈
325
473ms
27 Aug 2026
Prime Numbers (Long)
Florian-Mt
70
1,149ms
26 Aug 2026
Prime Numbers
Florian-Mt
68
139ms
26 Aug 2026
Maze
prestosilver
218
490ms
26 Aug 2026
Mahjong
prestosilver
🥈
438
703ms
26 Aug 2026
Billiards
prestosilver
261
408ms
26 Aug 2026
Sudoku (Fill-in)
prestosilver
391
469ms
26 Aug 2026
Thue–Morse Constant
HumanoidCPU
1,008
125ms
24 Aug 2026
Gray Code Decoder
albanian-laundromat
🥉
71
414ms
22 Aug 2026
Fibonacci
LostSyntax21
44
126ms
21 Aug 2026
Star Wars GPT
prestosilver
🥈
176
407ms
21 Aug 2026
QR Decoder
prestosilver
🥉
239
390ms
21 Aug 2026
Tutorial
quasar098
149
530ms
20 Aug 2026
Tic-tac-toe
prestosilver
164
574ms
20 Aug 2026
SI Units
prestosilver
841
445ms
20 Aug 2026
Intersection
prestosilver
153
447ms
20 Aug 2026
brainfuck
prestosilver
280
469ms
20 Aug 2026
Emojify
scpchicken
448
395ms
20 Aug 2026
DFA Simulator
scpchicken
649
419ms
20 Aug 2026
Day of Week
scpchicken
612
482ms
20 Aug 2026
Continued Fractions
scpchicken
608
410ms
20 Aug 2026
Connect Four
scpchicken
528
420ms
20 Aug 2026
Connect Four
janAkali
398
562ms
20 Aug 2026
Arrows
msbranicky
296
527ms
20 Aug 2026
Fibonacci
prestosilver
44
137ms
17 Aug 2026
Continued Fractions
prestosilver
🥉
181
377ms
17 Aug 2026
Card Number Validation
scpchicken
440
353ms
16 Aug 2026
Calendar
scpchicken
795
376ms
16 Aug 2026
brainfuck
scpchicken
711
396ms
16 Aug 2026
Billiards
scpchicken
789
385ms
16 Aug 2026
Arabic to Roman
scpchicken
769
391ms
16 Aug 2026
Foo Fizz Buzz Bar
scpchicken
5,729
137ms
16 Aug 2026
Evil Numbers (Long)
scpchicken
1,960
134ms
16 Aug 2026
Evil Numbers
scpchicken
80
133ms
16 Aug 2026
Farey Sequence
scpchicken
4,364
140ms
16 Aug 2026
Factorial Factorisation
scpchicken
872
134ms
16 Aug 2026
Emirp Numbers (Long)
scpchicken
1,166
133ms
16 Aug 2026
Emirp Numbers
scpchicken
146
143ms
16 Aug 2026
Divisors
scpchicken
1,176
133ms
16 Aug 2026
Diamonds
scpchicken
1,113
138ms
16 Aug 2026
Collatz
scpchicken
3,236
137ms
16 Aug 2026
Christmas Trees
scpchicken
555
138ms
16 Aug 2026
Cubes
scpchicken
2,837
135ms
16 Aug 2026
Alphabetic Numbers
scpchicken
3,905
137ms
16 Aug 2026
Gijswijt’s Sequence
scpchicken
2,010
136ms
16 Aug 2026
Catalan’s Constant
scpchicken
1,013
133ms
16 Aug 2026
Catalan Numbers
scpchicken
2,882
134ms
16 Aug 2026
ASCII Table
scpchicken
282
134ms
16 Aug 2026
Ascending Primes
scpchicken
522
130ms
16 Aug 2026
Arithmetic Numbers
scpchicken
37,652
134ms
16 Aug 2026
Abundant Numbers (Long)
scpchicken
974
131ms
16 Aug 2026
Abundant Numbers
scpchicken
173
132ms
16 Aug 2026
99 Bottles of Beer
scpchicken
11,895
131ms
16 Aug 2026
24 Game
scpchicken
12,442
143ms
16 Aug 2026
12 Days of Christmas
scpchicken
633
133ms
15 Aug 2026
Emojify
edsrzf
💎
100
444ms
15 Aug 2026
Nim
BREMAUCY
148
380ms
15 Aug 2026
Nim
tomh1012
239
360ms
11 Aug 2026
Fizz Buzz
enbyte
81
135ms
10 Aug 2026
Ulam Sequence
Ripick
140
431ms
9 Aug 2026
Nim
emgordon154
152
356ms
8 Aug 2026
Yellowstone Permutation
HumanoidCPU
4,020
128ms
8 Aug 2026
Niven Numbers
scpchicken
49
135ms
7 Aug 2026
Semiprime Numbers
prestosilver
168
425ms
7 Aug 2026
Spelling Numbers
janAkali
424
403ms
7 Aug 2026
Alphabetic Numbers
janAkali
🥈
251
375ms
7 Aug 2026
Ulam Sequence
prestosilver
🥈
104
822ms
6 Aug 2026