Recent Solutions
Achievements
Cheevos
Golfers
Solutions
All Holes
12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
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
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)
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
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
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
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
05AB1E
ALGOL 68
APL
ArkScript
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Bytes
Chars
Scoring
Bytes
Chars
Language
All
><>
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
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
ALGOL 68
APL
ArkScript
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Hole
All
12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
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
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)
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
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Levenshtein Distance
tomh1012
557
7ms
4 days ago
Kaprekar Numbers
ovs-code
🥉
142
4,785ms
4 days ago
Diamonds
edsrzf
🥉
82
3ms
4 days ago
Musical Chords
edsrzf
💎
175
9ms
6 days ago
Calendar
edsrzf
💎
155
10ms
6 days ago
Calendar
dokutan
🥈
228
12ms
6 days ago
Tutorial
FortuiteMan
150
4ms
6 days ago
π
JOrE20
1,009
3ms
8 days ago
Multitap Input
edsrzf
💎
107
352ms
11 days ago
Levenshtein Distance
kmathis22
509
3ms
12 days ago
Kolakoski Constant
JOrE20
1,007
3ms
12 days ago
Multitap Input
dokutan
🥈
124
3ms
14 days ago
π
Andrey2001
1,007
2ms
15 days ago
99 Bottles of Beer
ehulinsky
518
3ms
16 days ago
Billiards
ehulinsky
696
6ms
16 days ago
Tutorial
Mefred
150
4ms
17 days ago
Trinomial Triangle
KatieLG-Transpiler
2,073
3ms
9 Jan 2026
Tower of Hanoi
KatieLG-Transpiler
3,583
3ms
9 Jan 2026
Taxicab Numbers
KatieLG-Transpiler
4,166
3ms
9 Jan 2026
Sphenic Numbers
KatieLG-Transpiler
8,866
3ms
9 Jan 2026
Semiprime Numbers
KatieLG-Transpiler
12,795
3ms
9 Jan 2026
Polygon Triangulations
KatieLG-Transpiler
4,318
3ms
9 Jan 2026
Partition Numbers
KatieLG-Transpiler
653
3ms
9 Jan 2026
Odd Polyomino Tiling
KatieLG-Transpiler
21,437
3ms
9 Jan 2026
Mandelbrot
KatieLG-Transpiler
3,368
3ms
9 Jan 2026
Kaprekar Numbers
KatieLG-Transpiler
446
3ms
9 Jan 2026
Hilbert Curve
KatieLG-Transpiler
2,054
3ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
398
3ms
9 Jan 2026
Hexagonal Spiral
KatieLG-Transpiler
1,341
3ms
9 Jan 2026
Apéry’s Constant
KatieLG-Transpiler
1,009
3ms
9 Jan 2026
Quine
CornerMercury
41
3ms
7 Jan 2026
Catalan’s Constant
JOrE20
1,009
3ms
6 Jan 2026
τ
JOrE20
1,009
3ms
4 Jan 2026
√2
JOrE20
1,009
3ms
4 Jan 2026
φ
JOrE20
1,009
3ms
4 Jan 2026
ln 2
JOrE20
1,009
3ms
4 Jan 2026
Tower of Hanoi
bitsandbeyond
99
3ms
3 Jan 2026
Fibonacci
solisolu
69
4ms
30 Dec 2025
Fibonacci
albanian-laundromat
68
4ms
30 Dec 2025
Rule 110
dokutan
658
4ms
29 Dec 2025
Polyominoes
dokutan
🥈
486
3ms
29 Dec 2025
Prime Numbers
edsrzf
46
3ms
29 Dec 2025
Poker
edsrzf
💎
218
399ms
27 Dec 2025
Maze
edsrzf
💎
111
22ms
27 Dec 2025
Game of Life
dokutan
🥉
216
9ms
27 Dec 2025
Zodiac Signs
dokutan
270
7ms
27 Dec 2025
Mahjong
dokutan
🥈
446
23ms
27 Dec 2025
Reversi
dokutan
172
21ms
27 Dec 2025
Maze
dokutan
🥈
153
2,370ms
27 Dec 2025
Minesweeper
dokutan
🥈
183
80ms
27 Dec 2025
Poker
dokutan
🥈
358
4ms
27 Dec 2025
Sudoku
dokutan
💎
461
29ms
27 Dec 2025
Forsyth–Edwards Notation
dokutan
172
2ms
27 Dec 2025
Emojify
dokutan
194
3ms
27 Dec 2025
99 Bottles of Beer
dokutan
194
3ms
27 Dec 2025
ROT13
edsrzf
💎
85
15ms
26 Dec 2025
√2
dokutan
384
3ms
26 Dec 2025
φ
dokutan
384
3ms
26 Dec 2025
τ
dokutan
384
2ms
26 Dec 2025
π
dokutan
381
2ms
26 Dec 2025
λ
dokutan
383
2ms
26 Dec 2025
γ
dokutan
🥉
383
2ms
26 Dec 2025
Van Eck Sequence
dokutan
689
2ms
26 Dec 2025
Vampire Numbers
dokutan
372
2ms
26 Dec 2025
United States
dokutan
284
3ms
26 Dec 2025
Trinomial Triangle
dokutan
613
3ms
26 Dec 2025
Transpose Sentence
dokutan
🥉
107
56ms
26 Dec 2025
Tower of Hanoi
dokutan
115
2ms
26 Dec 2025
Tongue-twisters
dokutan
🥉
174
3ms
26 Dec 2025
Spelling Numbers
dokutan
🥉
276
5ms
26 Dec 2025
Smith Numbers
dokutan
617
2ms
26 Dec 2025
Sierpiński Triangle
dokutan
114
2ms
26 Dec 2025
Seven Segment
dokutan
136
2ms
26 Dec 2025
ROT13
dokutan
🥈
108
3ms
26 Dec 2025
Roman to Arabic
dokutan
98
9ms
26 Dec 2025
Rock-paper-scissors-Spock-lizard
dokutan
🥉
229
3ms
26 Dec 2025
Rijndael S-box
dokutan
🥉
322
3ms
26 Dec 2025
Recamán
dokutan
132
4ms
26 Dec 2025
Prime Numbers (Long)
dokutan
89
3,986ms
26 Dec 2025
Prime Numbers
dokutan
67
4ms
26 Dec 2025