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Recent Solutions
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12 Days of Christmas
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99 Bottles of Beer
Abundant Numbers
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brainfuck
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Day of Week
DFA Simulator
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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
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Happy Numbers
Happy Numbers (Long)
Hexdump
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ISBN
Jacobi Symbol
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Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
Lucky Numbers
Lucky Tickets
Mahjong
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Maze
Medal Tally
Minesweeper
Morse Decoder
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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
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
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
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
Chars
Time
Submitted
Christmas Trees
HumanoidCPU
605
4ms
13 May 2026
Ulam Sequence
HumanoidCPU
1,348
3ms
12 May 2026
Ulam Sequence
Shanethegamer
1,099
3ms
11 May 2026
Arabic to Roman
Madjosz
224
19ms
7 May 2026
Tutorial
snoozingnewt
40
5ms
1 May 2026
Taxicab Numbers
HumanoidCPU
134
84ms
1 May 2026
Tutorial
GolfingSuccess
40
4ms
29 Apr 2026
Tutorial
raphaelimahorn
123
4ms
27 Apr 2026
Dragon Curve
HumanoidCPU
10,533
3ms
25 Apr 2026
Dragon Curve
Shanethegamer
10,279
3ms
23 Apr 2026
Alphabetic Numbers
Shanethegamer
3,901
3ms
19 Apr 2026
Kaprekar Numbers
DialFrost
83
4,659ms
12 Apr 2026
Tower of Hanoi
scpchicken
78
3ms
11 Apr 2026
Prime Numbers
tomh1012
33
3ms
19 Mar 2026
Fizz Buzz
madex
92
3ms
14 Mar 2026
Alphabetic Numbers
HumanoidCPU
4,901
3ms
6 Mar 2026
Fizz Buzz
dokutan
109
3ms
15 Feb 2026
Tutorial
dokutan
60
4ms
9 Feb 2026
Fibonacci
dokutan
39
3ms
9 Feb 2026
Fibonacci
plcc0
39
3ms
4 Feb 2026
Tutorial
plcc0
40
4ms
4 Feb 2026
Tutorial
FortuiteMan
123
3ms
3 Feb 2026
Leap Years
DialFrost
36
3ms
31 Jan 2026
π
Andrey2001
1,009
3ms
25 Jan 2026
Tutorial
Mefred
123
3ms
15 Jan 2026
𝑒
KatieLG-Transpiler
1,009
2ms
9 Jan 2026
√2
KatieLG-Transpiler
1,009
2ms
9 Jan 2026
φ
KatieLG-Transpiler
1,009
2ms
9 Jan 2026
τ
KatieLG-Transpiler
1,009
2ms
9 Jan 2026
π
KatieLG-Transpiler
1,009
2ms
9 Jan 2026
λ
KatieLG-Transpiler
1,009
2ms
9 Jan 2026
γ
KatieLG-Transpiler
1,009
2ms
9 Jan 2026
Van Eck Sequence
KatieLG-Transpiler
3,560
2ms
9 Jan 2026
Vampire Numbers
KatieLG-Transpiler
1,231
2ms
9 Jan 2026
Trinomial Triangle
KatieLG-Transpiler
2,092
2ms
9 Jan 2026
Tower of Hanoi
KatieLG-Transpiler
4,093
2ms
9 Jan 2026
Tongue-twisters
KatieLG-Transpiler
542
2ms
9 Jan 2026
Taxicab Numbers
KatieLG-Transpiler
4,650
2ms
9 Jan 2026
Sphenic Numbers
KatieLG-Transpiler
10,665
3ms
9 Jan 2026
Smith Numbers
KatieLG-Transpiler
2,205
2ms
9 Jan 2026
Sierpiński Triangle
KatieLG-Transpiler
413
2ms
9 Jan 2026
Semiprime Numbers
KatieLG-Transpiler
15,419
2ms
9 Jan 2026
Rule 110
KatieLG-Transpiler
10,205
2ms
9 Jan 2026
Rijndael S-box
KatieLG-Transpiler
789
2ms
9 Jan 2026
Recamán
KatieLG-Transpiler
1,152
2ms
9 Jan 2026
Prime Numbers (Long)
KatieLG-Transpiler
7,182
2ms
9 Jan 2026
Prime Numbers
KatieLG-Transpiler
101
2ms
9 Jan 2026
Polyominoes
KatieLG-Transpiler
4,835
2ms
9 Jan 2026
Polygon Triangulations
KatieLG-Transpiler
4,513
3ms
9 Jan 2026
Pernicious Numbers (Long)
KatieLG-Transpiler
24,919
3ms
9 Jan 2026
Pernicious Numbers
KatieLG-Transpiler
140
2ms
9 Jan 2026
Pascal’s Triangle
KatieLG-Transpiler
794
2ms
9 Jan 2026
Partition Numbers
KatieLG-Transpiler
752
2ms
9 Jan 2026
Odious Numbers (Long)
KatieLG-Transpiler
2,450
2ms
9 Jan 2026
Odious Numbers
KatieLG-Transpiler
104
2ms
9 Jan 2026
Number Spiral
KatieLG-Transpiler
315
2ms
9 Jan 2026
Niven Numbers (Long)
KatieLG-Transpiler
8,981
2ms
9 Jan 2026
Niven Numbers
KatieLG-Transpiler
129
2ms
9 Jan 2026
N Queens
KatieLG-Transpiler
1,399
2ms
9 Jan 2026
Mandelbrot
KatieLG-Transpiler
3,408
2ms
9 Jan 2026
Lucky Numbers
KatieLG-Transpiler
5,825
2ms
9 Jan 2026
Look and Say
KatieLG-Transpiler
1,304
2ms
9 Jan 2026
ln 2
KatieLG-Transpiler
1,009
2ms
9 Jan 2026
Leyland Numbers
KatieLG-Transpiler
998
2ms
9 Jan 2026
Leap Years
KatieLG-Transpiler
881
2ms
9 Jan 2026
Kolakoski Sequence
KatieLG-Transpiler
2,006
2ms
9 Jan 2026
Kolakoski Constant
KatieLG-Transpiler
1,009
2ms
9 Jan 2026
Kaprekar Numbers
KatieLG-Transpiler
513
2ms
9 Jan 2026
Inventory Sequence
KatieLG-Transpiler
3,628
2ms
9 Jan 2026
Hilbert Curve
KatieLG-Transpiler
2,085
2ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
458
2ms
9 Jan 2026
Hexagonal Spiral
KatieLG-Transpiler
1,375
2ms
9 Jan 2026
Happy Numbers (Long)
KatieLG-Transpiler
700
2ms
9 Jan 2026
Happy Numbers
KatieLG-Transpiler
144
2ms
9 Jan 2026
Gijswijt’s Sequence
KatieLG-Transpiler
3,005
2ms
9 Jan 2026
Foo Fizz Buzz Bar
KatieLG-Transpiler
6,724
2ms
9 Jan 2026
Fizz Buzz
KatieLG-Transpiler
518
2ms
9 Jan 2026
Fibonacci
KatieLG-Transpiler
170
2ms
9 Jan 2026
Farey Sequence
KatieLG-Transpiler
5,134
2ms
9 Jan 2026
Factorial Factorisation
KatieLG-Transpiler
868
2ms
9 Jan 2026
Evil Numbers (Long)
KatieLG-Transpiler
2,456
2ms
9 Jan 2026
Evil Numbers
KatieLG-Transpiler
100
2ms
9 Jan 2026
Emirp Numbers (Long)
KatieLG-Transpiler
1,401
2ms
9 Jan 2026
Emirp Numbers
KatieLG-Transpiler
177
2ms
9 Jan 2026
Divisors
KatieLG-Transpiler
1,271
2ms
9 Jan 2026
Diamonds
KatieLG-Transpiler
1,197
2ms
9 Jan 2026
Cubes
KatieLG-Transpiler
2,943
2ms
9 Jan 2026
Collatz
KatieLG-Transpiler
4,231
2ms
9 Jan 2026
Christmas Trees
KatieLG-Transpiler
605
2ms
9 Jan 2026
Catalan’s Constant
KatieLG-Transpiler
1,009
2ms
9 Jan 2026
Catalan Numbers
KatieLG-Transpiler
2,977
2ms
9 Jan 2026
Ascending Primes
KatieLG-Transpiler
617
2ms
9 Jan 2026
Arithmetic Numbers
KatieLG-Transpiler
45,335
2ms
9 Jan 2026
Apéry’s Constant
KatieLG-Transpiler
1,009
2ms
9 Jan 2026
Abundant Numbers (Long)
KatieLG-Transpiler
1,215
2ms
9 Jan 2026
Abundant Numbers
KatieLG-Transpiler
214
2ms
9 Jan 2026
99 Bottles of Beer
KatieLG-Transpiler
12,189
2ms
9 Jan 2026
24 Game
KatieLG-Transpiler
13,799
2ms
9 Jan 2026
12 Days of Christmas
KatieLG-Transpiler
2,487
2ms
9 Jan 2026
𝑒
JOrE20
1,009
2ms
5 Jan 2026