The
Snake
hole will go live in approximately
36 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)
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PalindromemordnilaP
Pangram Grep
Partition Numbers
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Pernicious Numbers (Long)
Poker
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Quine
Recamán
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Reversi
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Roman to Arabic
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Rule 110
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Set
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Ten-pin Bowling
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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
CSS Colors (Inverse)
CSS Grid
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Ellipse Perimeters
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Floyd-Steinberg Dithering
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Highly Composite Numbers
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Lyndon Factorization
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Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
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Snake
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Thue–Morse Constant
Turtle
Tutorial
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ALGOL 68
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AWK
Bash
BASIC
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brainfuck
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C#
C++
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Coconut
Common Lisp
Crystal
D
Dart
Elixir
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Factor
Forth
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Go
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Groovy
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iogii
J
Janet
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jq
Julia
K
Kotlin
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Nim
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PowerShell
Prolog
Python
R
Raku
Rockstar
Ruby
Rust
Scheme
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
Bytes
Time
Submitted
Snake
madex
245
136ms
38 hours ago
Pernicious Numbers
snoozingnewt
47
131ms
2 days ago
Thue–Morse Constant
HumanoidCPU
1,012
139ms
24 Aug 2026
Tutorial
quasar098
264
162ms
20 Aug 2026
Fizz Buzz
HumanoidCPU
140
132ms
18 Aug 2026
Kolakoski Sequence
dokutan
422
145ms
17 Aug 2026
Tongue-twisters
dokutan
505
151ms
17 Aug 2026
Hexagonal Spiral
bitsandbeyond
301
140ms
14 Aug 2026
Yellowstone Permutation
HumanoidCPU
4,020
138ms
8 Aug 2026
Ulam Sequence
madex
127
129ms
31 Jul 2026
Fibonacci
dokutan
47
130ms
26 Jul 2026
99 Bottles of Beer
JOrE20
11,894
132ms
19 Jul 2026
Fibonacci
Matter1024
59
139ms
20 Jun 2026
Pascal’s Triangle
Siri-chan
147
139ms
22 May 2026
Tutorial
Siri-chan
152
146ms
22 May 2026
Ulam Sequence
HumanoidCPU
1,102
134ms
12 May 2026
Ulam Sequence
Shanethegamer
1,102
147ms
11 May 2026
Tower of Hanoi
scpchicken
65
136ms
25 Apr 2026
Dragon Curve
HumanoidCPU
10,282
135ms
23 Apr 2026
Dragon Curve
Shanethegamer
10,282
134ms
23 Apr 2026
Alphabetic Numbers
Shanethegamer
3,904
133ms
19 Apr 2026
ISBN
LesBoys43
306
153ms
28 Mar 2026
Fizz Buzz
madex
117
140ms
14 Mar 2026
Leap Years
dokutan
55
140ms
13 Mar 2026
Pascal’s Triangle
dokutan
81
140ms
12 Mar 2026
Odious Numbers
dokutan
53
142ms
12 Mar 2026
Evil Numbers
dokutan
53
142ms
12 Mar 2026
Evil Numbers (Long)
dokutan
57
140ms
12 Mar 2026
Odious Numbers (Long)
dokutan
56
149ms
12 Mar 2026
Niven Numbers (Long)
dokutan
82
147ms
12 Mar 2026
Niven Numbers
dokutan
54
150ms
12 Mar 2026
Abundant Numbers (Long)
dokutan
79
162ms
12 Mar 2026
Abundant Numbers
dokutan
79
162ms
12 Mar 2026
Alphabetic Numbers
HumanoidCPU
3,904
143ms
6 Mar 2026
Fizz Buzz
dokutan
218
131ms
15 Feb 2026
Tutorial
FortuiteMan
264
181ms
3 Feb 2026
Fibonacci
Andrey2001
46
150ms
25 Jan 2026
π
Andrey2001
1,012
138ms
25 Jan 2026
Tutorial
Mefred
264
162ms
15 Jan 2026
99 Bottles of Beer
kurkale6ka
11,929
132ms
12 Jan 2026
𝑒
JOrE20
1,074
132ms
5 Jan 2026
Tutorial
HumanoidCPU
86
157ms
1 Jan 2026
Fibonacci
albanian-laundromat
65
135ms
30 Dec 2025
Tower of Hanoi
KatieLG
4,109
147ms
30 Nov 2025
Taxicab Numbers
HumanoidCPU
4,169
153ms
27 Nov 2025
Taxicab Numbers
Shanethegamer
4,169
147ms
26 Nov 2025
Tutorial
MeWhenI
86
186ms
23 Nov 2025
Kolakoski Sequence
HumanoidCPU
2,009
139ms
12 Nov 2025
Catalan’s Constant
HumanoidCPU
1,012
135ms
10 Nov 2025
√2
gigaprofisi
1,012
138ms
6 Nov 2025
𝑒
gigaprofisi
1,012
136ms
6 Nov 2025
Tower of Hanoi
HumanoidCPU
3,586
144ms
6 Nov 2025
Tower of Hanoi
Shanethegamer
4,096
141ms
30 Oct 2025
𝑒
KatieLG
1,025
137ms
24 Oct 2025
√2
KatieLG
1,025
142ms
24 Oct 2025
φ
KatieLG
1,025
138ms
24 Oct 2025
τ
KatieLG
1,025
139ms
24 Oct 2025
π
KatieLG
1,025
135ms
24 Oct 2025
λ
KatieLG
1,025
137ms
24 Oct 2025
γ
KatieLG
1,025
136ms
24 Oct 2025
Van Eck Sequence
KatieLG
3,576
140ms
24 Oct 2025
Vampire Numbers
KatieLG
1,247
140ms
24 Oct 2025
Tongue-twisters
KatieLG
558
139ms
24 Oct 2025
Tic-tac-toe
KatieLG
18,357
431ms
24 Oct 2025
Star Wars Opening Crawl
KatieLG
5,605
151ms
24 Oct 2025
Smith Numbers
KatieLG
2,221
136ms
24 Oct 2025
Roman to Arabic
KatieLG
42,133
765ms
24 Oct 2025
Rock-paper-scissors-Spock-lizard
KatieLG
838
155ms
24 Oct 2025
Rijndael S-box
KatieLG
805
136ms
24 Oct 2025
Recamán
KatieLG
1,168
141ms
24 Oct 2025
Proximity Grid
KatieLG
3,765
147ms
24 Oct 2025
Prime Numbers (Long)
KatieLG
7,198
139ms
24 Oct 2025
Prime Numbers
KatieLG
117
144ms
24 Oct 2025
Polyominoes
KatieLG
4,851
140ms
24 Oct 2025
Pernicious Numbers (Long)
KatieLG
24,935
143ms
24 Oct 2025
Pernicious Numbers
KatieLG
156
137ms
24 Oct 2025
Pascal’s Triangle
KatieLG
810
135ms
24 Oct 2025
Partition Numbers
KatieLG
768
136ms
24 Oct 2025
Odious Numbers (Long)
KatieLG
2,466
141ms
24 Oct 2025
Odious Numbers
KatieLG
120
134ms
24 Oct 2025
Number Spiral
KatieLG
331
139ms
24 Oct 2025
Niven Numbers (Long)
KatieLG
8,997
136ms
24 Oct 2025
Niven Numbers
KatieLG
145
138ms
24 Oct 2025
N Queens
KatieLG
1,415
139ms
24 Oct 2025
Musical Chords
KatieLG
7,475
224ms
24 Oct 2025
Lucky Tickets
KatieLG
3,449
188ms
24 Oct 2025
Lucky Numbers
KatieLG
5,841
141ms
24 Oct 2025
Look and Say
KatieLG
1,320
141ms
24 Oct 2025
ln 2
KatieLG
1,025
140ms
24 Oct 2025
Leyland Numbers
KatieLG
1,014
140ms
24 Oct 2025
Leap Years
KatieLG
897
137ms
24 Oct 2025
Kolakoski Sequence
KatieLG
2,022
139ms
24 Oct 2025
Kolakoski Constant
KatieLG
1,025
141ms
24 Oct 2025
Kaprekar Numbers
KatieLG
529
139ms
24 Oct 2025
Inventory Sequence
KatieLG
3,644
141ms
24 Oct 2025
Happy Numbers (Long)
KatieLG
716
142ms
24 Oct 2025
Happy Numbers
KatieLG
160
139ms
24 Oct 2025
Gijswijt’s Sequence
KatieLG
3,021
140ms
24 Oct 2025
Foo Fizz Buzz Bar
KatieLG
6,740
139ms
24 Oct 2025
Fibonacci
KatieLG
186
145ms
24 Oct 2025