The
Nim
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. Why not try and solve it ahead of time?
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12 Days of Christmas
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brainfuck
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Emirp Numbers (Long)
Emojify
Evil Numbers
Evil Numbers (Long)
Factorial Factorisation
Farey Sequence
Fibonacci
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Foo Fizz Buzz Bar
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
Gray Code Decoder
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Happy Numbers (Long)
Hexdump
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ISBN
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Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
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ln 2
Look and Say
Lucky Numbers
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Mahjong
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Maze
Medal Tally
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Morse Decoder
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N Queens
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
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
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
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Semiprime Numbers
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Snake
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Turtle
Tutorial
Ulam Sequence
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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
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Go
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Groovy
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iogii
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lua
Nim
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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
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
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
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
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Ulam Sequence
Hole
Golfer
Bytes
Time
Submitted
Divisors
retrohun
1,208
200ms
35 hours ago
Zeckendorf Representation
albanian-laundromat
260
201ms
45 hours ago
Zodiac Signs
albanian-laundromat
🥈
381
226ms
47 hours ago
Gray Code Encoder
albanian-laundromat
🥉
200
224ms
47 hours ago
Repeating Decimals
albanian-laundromat
🥈
439
223ms
2 days ago
Fractions
albanian-laundromat
🥈
282
236ms
3 days ago
DFA Simulator
albanian-laundromat
💎
395
234ms
3 days ago
γ
retrohun
1,045
210ms
6 days ago
τ
retrohun
1,045
269ms
6 days ago
Tutorial
Openstreetmapler
298
306ms
16 days ago
Tutorial
LaconicLuna
298
322ms
20 days ago
Lucky Tickets
GolfingSuccess
🥈
302
223ms
23 days ago
Topological Sort
Shanethegamer
🥈
308
395ms
26 days ago
Connect Four
albanian-laundromat
🦄
545
767ms
1 Jun 2026
ln 2
retrohun
1,045
223ms
31 May 2026
Abundant Numbers
retrohun
207
212ms
31 May 2026
Abundant Numbers (Long)
retrohun
1,008
231ms
31 May 2026
99 Bottles of Beer
retrohun
11,927
229ms
31 May 2026
12 Days of Christmas
retrohun
2,411
245ms
31 May 2026
γ
Haksell
1,044
231ms
31 May 2026
Leap Years
RealBen9
132
228ms
30 May 2026
Gray Code Decoder
Shanethegamer
🥉
238
233ms
29 May 2026
Repeating Decimals
Shanethegamer
💎
432
237ms
28 May 2026
Ellipse Perimeters
Shanethegamer
289
224ms
28 May 2026
Snake
Shanethegamer
411
252ms
28 May 2026
brainfuck
Shanethegamer
🥈
609
299ms
26 May 2026
Catalan Numbers
albanian-laundromat
115
235ms
25 May 2026
Nim
Shanethegamer
303
239ms
24 May 2026
Sphenic Numbers
albanian-laundromat
190
1,134ms
24 May 2026
Fizz Buzz
antimon2
165
234ms
22 May 2026
Alphabetic Numbers
CaedenHarper
🥉
3,936
238ms
21 May 2026
Emirp Numbers
oaiqjuy
269
247ms
19 May 2026
Evil Numbers
oaiqjuy
112
234ms
19 May 2026
Collatz
oaiqjuy
182
250ms
19 May 2026
Gijswijt’s Sequence
Shanethegamer
282
947ms
19 May 2026
Leyland Numbers
Shanethegamer
🥉
267
219ms
19 May 2026
Vampire Numbers
Shanethegamer
🥈
370
1,534ms
19 May 2026
Diamonds
Shanethegamer
🥉
290
218ms
19 May 2026
24 Game
Shanethegamer
🥉
661
1,593ms
19 May 2026
DFA Simulator
Shanethegamer
🥉
440
287ms
19 May 2026
Reversi
Shanethegamer
🥉
359
286ms
19 May 2026
Factorial Factorisation
Shanethegamer
272
237ms
19 May 2026
Billiards
Shanethegamer
🥉
366
276ms
19 May 2026
12 Days of Christmas
Shanethegamer
🥈
561
243ms
19 May 2026
Partition Numbers
Shanethegamer
246
240ms
18 May 2026
Ascending Primes
Shanethegamer
🥉
326
2,187ms
18 May 2026
Sierpiński Triangle
Shanethegamer
209
229ms
18 May 2026
Leap Years
Steffan153
💎
107
222ms
18 May 2026
Cubes
Shanethegamer
💎
368
245ms
15 May 2026
Lucky Numbers
Shanethegamer
213
295ms
15 May 2026
𝑒
Shanethegamer
198
264ms
15 May 2026
Tongue-twisters
prestosilver
564
236ms
15 May 2026
Morse Encoder
scpchicken
🥉
489
279ms
15 May 2026
Spelling Numbers
MeWhenI
🥉
1,138
330ms
13 May 2026
Tower of Hanoi
scpchicken
149
240ms
12 May 2026
Ulam Sequence
HumanoidCPU
1,134
250ms
12 May 2026
Alphabetic Numbers
KatieLG
🥈
3,130
240ms
12 May 2026
Alphabetic Numbers
dokutan
💎
2,078
232ms
12 May 2026
Ulam Sequence
Shanethegamer
1,134
235ms
11 May 2026
Niven Numbers (Long)
emgordon154
🥉
125
258ms
9 May 2026
Trinomial Triangle
Shanethegamer
🥈
217
243ms
8 May 2026
Smooth Numbers
Shanethegamer
268
470ms
8 May 2026
Niven Numbers (Long)
raphaelimahorn
7,479
257ms
5 May 2026
Niven Numbers
edsrzf
111
262ms
5 May 2026
Niven Numbers (Long)
edsrzf
127
300ms
5 May 2026
ISBN
albanian-laundromat
272
268ms
4 May 2026
Polyominoes
albanian-laundromat
💎
473
264ms
4 May 2026
Continued Fractions
albanian-laundromat
💎
282
260ms
4 May 2026
Taxicab Numbers
albanian-laundromat
🥉
341
424ms
4 May 2026
Niven Numbers (Long)
antimon2
154
258ms
4 May 2026
ln 2
edsrzf
158
404ms
4 May 2026
𝑒
edsrzf
🥉
155
268ms
4 May 2026
Fibonacci
edsrzf
102
224ms
4 May 2026
Catalan Numbers
edsrzf
🥇
107
225ms
4 May 2026
Lucky Numbers
edsrzf
💎
138
252ms
4 May 2026
Taxicab Numbers
edsrzf
💎
234
275ms
4 May 2026
Taxicab Numbers
LostSyntax21
🥈
240
275ms
4 May 2026
Nim
albanian-laundromat
327
260ms
2 May 2026
Intersection
Shanethegamer
💎
292
242ms
1 May 2026
99 Bottles of Beer
madeforlosers
11,927
245ms
1 May 2026
24 Game
madeforlosers
12,474
248ms
1 May 2026
Taxicab Numbers
dokutan
2,292
246ms
1 May 2026
Taxicab Numbers
CaedenHarper
4,201
258ms
29 Apr 2026
Dragon Curve
dokutan
1,208
246ms
28 Apr 2026
Arithmetic Numbers
dokutan
259
2,534ms
28 Apr 2026
Abundant Numbers
dokutan
246
265ms
28 Apr 2026
Abundant Numbers (Long)
dokutan
247
267ms
28 Apr 2026
Star Wars Opening Crawl
scpchicken
🥈
3,496
295ms
28 Apr 2026
Card Number Validation
albanian-laundromat
257
247ms
27 Apr 2026
Vampire Numbers
albanian-laundromat
💎
352
2,469ms
26 Apr 2026
Multitap Input
albanian-laundromat
🥉
305
279ms
25 Apr 2026
Kolakoski Sequence
madeforlosers
2,042
239ms
24 Apr 2026
Dragon Curve
HumanoidCPU
10,314
245ms
23 Apr 2026
Dragon Curve
Shanethegamer
10,314
228ms
23 Apr 2026
Evil Numbers
madeforlosers
112
255ms
23 Apr 2026
Cubes
madeforlosers
4,143
231ms
22 Apr 2026
Odious Numbers
madeforlosers
115
240ms
22 Apr 2026
Evil Numbers (Long)
madeforlosers
1,992
235ms
22 Apr 2026
Farey Sequence
madeforlosers
4,396
236ms
22 Apr 2026
Odious Numbers (Long)
madeforlosers
1,987
236ms
22 Apr 2026