The
Snake
hole will go live in approximately
5 days
. Why not try and solve it ahead of time?
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Cheevos
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12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
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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
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
Hexdump
ibeucaly
257
284ms
32 mins ago
QR Decoder
kkoenig
🥉
187
270ms
48 mins ago
Rule 110
kkoenig
💎
139
286ms
49 mins ago
Collatz
emgordon154
114
276ms
10 hours ago
Happy Numbers (Long)
emgordon154
🥉
130
275ms
10 hours ago
Arithmetic Numbers
emgordon154
124
346ms
10 hours ago
Abundant Numbers (Long)
emgordon154
114
268ms
10 hours ago
Divisors
emgordon154
109
274ms
10 hours ago
Odious Numbers (Long)
emgordon154
83
277ms
10 hours ago
Evil Numbers (Long)
emgordon154
84
276ms
10 hours ago
Evil Numbers
emgordon154
82
283ms
10 hours ago
Niven Numbers (Long)
emgordon154
🥇
102
269ms
11 hours ago
Forsyth–Edwards Notation
JayXon
🥇
164
275ms
11 hours ago
Leap Years
albanian-laundromat
91
273ms
14 hours ago
Odious Numbers
emgordon154
82
274ms
15 hours ago
Connect Four
kkoenig
🥈
232
288ms
19 hours ago
ln 2
DrWoose
1,073
281ms
31 hours ago
Christmas Trees
kkoenig
🥇
121
275ms
36 hours ago
CSS Colors
kkoenig
🥈
698
277ms
36 hours ago
Zodiac Signs
kkoenig
204
292ms
41 hours ago
Chess Move Validation
kkoenig
💎
148
296ms
44 hours ago
Forsyth–Edwards Notation
kkoenig
🥇
164
286ms
2 days ago
Minesweeper
kkoenig
197
284ms
2 days ago
Card Number Validation
albanian-laundromat
146
268ms
2 days ago
Transpose Sentence
albanian-laundromat
172
280ms
2 days ago
Collatz
albanian-laundromat
106
272ms
2 days ago
Lucky Numbers
albanian-laundromat
147
277ms
2 days ago
Star Wars Opening Crawl
albanian-laundromat
💎
344
276ms
2 days ago
Kolakoski Constant
albanian-laundromat
194
278ms
2 days ago
Recamán
albanian-laundromat
121
272ms
2 days ago
Christmas Trees
albanian-laundromat
141
270ms
2 days ago
𝑒
albanian-laundromat
🥇
137
272ms
2 days ago
Kaprekar Numbers
kkoenig
🥉
113
933ms
2 days ago
Recamán
kkoenig
🥇
113
266ms
2 days ago
Number Spiral
emgordon154
193
278ms
2 days ago
Gijswijt’s Sequence
kkoenig
💎
132
265ms
2 days ago
Topological Sort
kkoenig
💎
190
287ms
2 days ago
Gijswijt’s Sequence
Steffan153
🥈
133
278ms
2 days ago
Leyland Numbers
kkoenig
💎
164
273ms
2 days ago
Proximity Grid
kkoenig
🥈
232
278ms
2 days ago
Tower of Hanoi
albanian-laundromat
93
269ms
2 days ago
Tower of Hanoi
JOrE20
99
274ms
3 days ago
Sierpiński Triangle
Steffan153
🥈
102
288ms
3 days ago
DFA Simulator
kkoenig
💎
235
317ms
3 days ago
Kolakoski Sequence
kkoenig
98
284ms
3 days ago
Intersection
kkoenig
182
278ms
3 days ago
99 Bottles of Beer
kkoenig
🥉
292
288ms
3 days ago
Number Spiral
kkoenig
🥇
143
290ms
3 days ago
Ordinal Numbers
kkoenig
138
299ms
3 days ago
Partition Numbers
kkoenig
🥇
110
305ms
3 days ago
ASCII Table
kkoenig
🥇
152
280ms
3 days ago
Look and Say
kkoenig
🥇
129
296ms
3 days ago
Arabic to Roman
kkoenig
175
306ms
3 days ago
Evil Numbers
kkoenig
🥇
80
282ms
3 days ago
SI Units
edsrzf
💎
564
680ms
3 days ago
Emojify
kkoenig
🥉
165
311ms
3 days ago
Roman to Arabic
kkoenig
145
311ms
3 days ago
Vampire Numbers
kkoenig
🥈
176
3,034ms
3 days ago
Farey Sequence
kkoenig
🥉
108
273ms
3 days ago
Diamonds
kkoenig
🥉
124
294ms
3 days ago
Levenshtein Distance
kkoenig
🥇
207
290ms
3 days ago
Factorial Factorisation
kkoenig
🥈
145
308ms
3 days ago
Billiards
kkoenig
229
291ms
3 days ago
SI Units
kkoenig
🥈
597
297ms
3 days ago
Tic-tac-toe
kkoenig
168
315ms
3 days ago
Poker
kkoenig
🥈
361
310ms
3 days ago
Alphabetic Numbers
kkoenig
🥈
219
284ms
3 days ago
Transpose Sentence
kkoenig
173
289ms
3 days ago
Star Wars GPT
kkoenig
🥇
229
318ms
3 days ago
Zeckendorf Representation
kkoenig
155
276ms
3 days ago
Sierpiński Triangle
kkoenig
💎
99
305ms
3 days ago
Tutorial
AllMeatball
136
358ms
4 days ago
Forsyth–Edwards Notation
KasperKivimaeki
🥉
174
272ms
4 days ago
Fibonacci
bpharaldsson
80
303ms
4 days ago
Medal Tally
kkoenig
209
277ms
4 days ago
Set
kkoenig
228
290ms
4 days ago
Reversi
albanian-laundromat
💎
213
318ms
4 days ago
Mahjong
kkoenig
🥈
300
293ms
4 days ago
Maze
kkoenig
203
340ms
4 days ago
Mandelbrot
kkoenig
178
296ms
4 days ago
Day of Week
albanian-laundromat
🥇
118
334ms
5 days ago
√2
albanian-laundromat
133
290ms
5 days ago
Sudoku
kkoenig
🥈
460
311ms
5 days ago
Multitap Input
kkoenig
💎
165
283ms
5 days ago
Prime Numbers
stackofbears
🥇
92
282ms
5 days ago
12 Days of Christmas
kkoenig
🥉
481
287ms
5 days ago
Tower of Hanoi
kkoenig
🥇
90
290ms
5 days ago
Trinomial Triangle
kkoenig
🥈
125
281ms
5 days ago
Prime Numbers
albanian-laundromat
🥇
92
277ms
6 days ago
12 Days of Christmas
zzh1996
💎
384
2,576ms
6 days ago
Prime Numbers (Long)
stackofbears
101
293ms
6 days ago
Sudoku (Fill-in)
JayXon
🥈
260
326ms
6 days ago
Minesweeper
Steffan153
🥇
185
296ms
6 days ago
Minesweeper
edsrzf
🥇
185
314ms
6 days ago
Game of Life
Steffan153
🥈
155
286ms
6 days ago
Reversi
kkoenig
🥈
214
291ms
6 days ago
Sudoku (Fill-in)
kkoenig
💎
259
306ms
6 days ago
Time Distance
kkoenig
🥈
349
300ms
6 days ago
N Queens
kkoenig
🥉
165
282ms
6 days ago
Polyominoes
kkoenig
🥉
251
294ms
6 days ago