The
Snake
hole will go live in approximately
2 days
. Why not try and solve it ahead of time?
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12 Days of Christmas
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brainfuck
Calendar
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Christmas Trees
Collatz
Connect Four
Continued Fractions
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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
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
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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><>
ALGOL 68
ArkScript
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
Erlang
F#
Factor
Forth
Fortran
Gleam
Go
GolfScript
Groovy
Haskell
Hexagony
iogii
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lua
Nim
OCaml
Pascal
Perl
PHP
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
393
66ms
16 hours ago
Pernicious Numbers
snoozingnewt
43
13ms
39 hours ago
Leap Years
albanian-laundromat
68
14ms
3 days ago
Chess Move Validation
MostParsingVex
🥈
200
36ms
10 days ago
Chess Move Validation
Languag3
💎
143
20ms
11 days ago
ROT13
JOrE20
21
14ms
12 days ago
ROT13
christos-cantina-security
🥇
17
14ms
12 days ago
Fibonacci
christos-cantina-security
139
13ms
13 days ago
Hilbert Curve
rollershutter
🥉
5,123
13ms
14 days ago
Billiards
Languag3
💎
173
20ms
17 days ago
CSS Colors
zzh1996
🥇
52
73ms
21 days ago
Tongue-twisters
HPWiz
🥈
271
14ms
24 days ago
Tutorial
zzh1996
37
16ms
27 days ago
Star Wars Opening Crawl
HPWiz
💎
130
1,901ms
27 days ago
Christmas Trees
Mukundan314
🥈
42
13ms
27 Aug 2026
Thue–Morse Constant
HumanoidCPU
1,008
14ms
24 Aug 2026
Transpose Sentence
HPWiz
💎
45
42ms
23 Aug 2026
Pangram Grep
BREMAUCY
100
39ms
21 Aug 2026
CSS Colors
BREMAUCY
220
15ms
21 Aug 2026
ROT13
BREMAUCY
20
14ms
21 Aug 2026
Odious Numbers (Long)
primo-ppcg
🥈
41
59ms
21 Aug 2026
Evil Numbers (Long)
primo-ppcg
🥈
41
58ms
21 Aug 2026
Tutorial
quasar098
175
15ms
20 Aug 2026
Emojify
scpchicken
532
15ms
20 Aug 2026
DFA Simulator
scpchicken
🥉
662
24ms
20 Aug 2026
Day of Week
scpchicken
563
32ms
20 Aug 2026
CSS Colors
scpchicken
3,703
15ms
20 Aug 2026
Continued Fractions
scpchicken
🥉
753
19ms
20 Aug 2026
Connect Four
scpchicken
🥈
615
511ms
20 Aug 2026
Topological Sort
Mukundan314
💎
85
4,261ms
18 Aug 2026
12 Days of Christmas
HPWiz
💎
329
2,445ms
17 Aug 2026
Quine
HPWiz
🥇
21
13ms
17 Aug 2026
Musical Chords
HPWiz
💎
98
415ms
17 Aug 2026
Quine
Mukundan314
🥇
21
13ms
17 Aug 2026
Card Number Validation
scpchicken
563
27ms
16 Aug 2026
Calendar
scpchicken
🥈
826
21ms
16 Aug 2026
brainfuck
scpchicken
925
250ms
16 Aug 2026
Billiards
scpchicken
🥉
775
26ms
16 Aug 2026
Arrows
scpchicken
991
16ms
16 Aug 2026
Arabic to Roman
scpchicken
823
97ms
16 Aug 2026
Foo Fizz Buzz Bar
scpchicken
5,724
14ms
16 Aug 2026
Evil Numbers (Long)
scpchicken
1,955
13ms
16 Aug 2026
Evil Numbers
scpchicken
75
13ms
16 Aug 2026
Farey Sequence
scpchicken
4,359
13ms
16 Aug 2026
Factorial Factorisation
scpchicken
867
13ms
16 Aug 2026
Emirp Numbers (Long)
scpchicken
1,161
13ms
16 Aug 2026
Emirp Numbers
scpchicken
141
13ms
16 Aug 2026
Divisors
scpchicken
1,171
13ms
16 Aug 2026
Diamonds
scpchicken
1,108
13ms
16 Aug 2026
Collatz
scpchicken
3,231
14ms
16 Aug 2026
Christmas Trees
scpchicken
550
14ms
16 Aug 2026
Cubes
scpchicken
4,106
14ms
16 Aug 2026
Gijswijt’s Sequence
scpchicken
2,005
13ms
16 Aug 2026
Catalan’s Constant
scpchicken
1,008
13ms
16 Aug 2026
Catalan Numbers
scpchicken
2,877
14ms
16 Aug 2026
ASCII Table
scpchicken
277
14ms
16 Aug 2026
Ascending Primes
scpchicken
1,016
14ms
16 Aug 2026
Arithmetic Numbers
scpchicken
76,086
21ms
16 Aug 2026
Abundant Numbers (Long)
scpchicken
2,198
14ms
16 Aug 2026
Abundant Numbers
scpchicken
397
14ms
16 Aug 2026
99 Bottles of Beer
scpchicken
13,384
14ms
16 Aug 2026
24 Game
scpchicken
19,246
15ms
16 Aug 2026
12 Days of Christmas
scpchicken
773
14ms
15 Aug 2026
τ
HPWiz
💎
121
3,497ms
15 Aug 2026
π
HPWiz
💎
122
3,568ms
15 Aug 2026
ROT13
zzh1996
🥇
17
14ms
13 Aug 2026
Tongue-twisters
zzh1996
308
14ms
10 Aug 2026
Sudoku (Fill-in)
MostParsingVex
💎
302
713ms
8 Aug 2026
Sudoku
MostParsingVex
💎
516
304ms
8 Aug 2026
N Queens
MostParsingVex
💎
284
448ms
8 Aug 2026
Yellowstone Permutation
HumanoidCPU
4,016
14ms
8 Aug 2026
Polyominoes
scpchicken
💎
606
302ms
5 Aug 2026
Ulam Sequence
scpchicken
💎
148
806ms
1 Aug 2026
Ulam Sequence
dokutan
🥈
951
14ms
31 Jul 2026
99 Bottles of Beer
zzh1996
🥈
159
16ms
27 Jul 2026
QR Decoder
AidanWalter
🥈
1,159
17ms
27 Jul 2026
Repeating Decimals
AidanWalter
🥈
863
23ms
27 Jul 2026
Mahjong
AidanWalter
🥈
2,018
52ms
27 Jul 2026
Connect Four
AidanWalter
🥉
1,074
1,161ms
27 Jul 2026
Calendar
AidanWalter
🥉
861
22ms
27 Jul 2026
Billiards
AidanWalter
1,196
41ms
27 Jul 2026
Set
scpchicken
🥉
255
557ms
26 Jul 2026
12 Days of Christmas
zzh1996
🥈
372
34ms
26 Jul 2026
Fibonacci
Mukundan314
🥇
28
14ms
26 Jul 2026
Gray Code Encoder
Mukundan314
💎
40
99ms
21 Jul 2026
Gray Code Decoder
Mukundan314
💎
47
442ms
21 Jul 2026
Sierpiński Triangle
Mukundan314
🥈
34
13ms
20 Jul 2026
Alphabetic Numbers
scpchicken
💎
205
52ms
19 Jul 2026
Partition Numbers
JOrE20
🥈
105
22ms
19 Jul 2026
Game of Life
Mukundan314
💎
76
31ms
18 Jul 2026
Cubes
Mukundan314
💎
114
15ms
17 Jul 2026
Levenshtein Distance
Mukundan314
💎
116
2,972ms
17 Jul 2026
Nim
JOrE20
🥈
200
15ms
17 Jul 2026
Diamonds
Mukundan314
🥈
46
13ms
16 Jul 2026
Proximity Grid
MostParsingVex
🥈
246
3,034ms
15 Jul 2026
Minesweeper
Mukundan314
💎
68
69ms
15 Jul 2026
Minesweeper
HPWiz
🥈
79
145ms
14 Jul 2026
Partition Numbers
Mukundan314
💎
60
78ms
13 Jul 2026
Nim
jesterjunk
💎
95
17ms
11 Jul 2026
Hexdump
MostParsingVex
🥈
237
36ms
7 Jul 2026