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
Bytes
Time
Submitted
ROT13
JayXon
🥇
81
444ms
6 hours ago
ROT13
error256
94
471ms
7 hours ago
Odious Numbers (Long)
dokutan
74
448ms
7 hours ago
ROT13
Steffan153
🥇
81
471ms
8 hours ago
Ten-pin Bowling
Steffan153
🥉
150
700ms
13 hours ago
ROT13
sean-niemann
🥉
82
461ms
14 hours ago
Tutorial
janAkali
252
216ms
2 days ago
Multitap Input
emgordon154
💎
128
441ms
2 days ago
Catalan Numbers
Steffan153
🥇
69
689ms
2 days ago
Seven Segment
emgordon154
160
449ms
2 days ago
Smith Numbers
emgordon154
152
537ms
2 days ago
Calendar
emgordon154
💎
241
488ms
3 days ago
12 Days of Christmas
emgordon154
498
570ms
3 days ago
Rijndael S-box
emgordon154
🥈
120
415ms
4 days ago
Kolakoski Constant
JOrE20
1,060
177ms
5 days ago
Repeating Decimals
sean-niemann
🥉
222
865ms
6 days ago
Calendar
Matter1024
🥈
244
611ms
6 days ago
Evil Numbers
emgordon154
67
517ms
6 days ago
Maze
emgordon154
💎
145
624ms
7 days ago
Pernicious Numbers
emgordon154
🥇
60
490ms
7 days ago
Pernicious Numbers (Long)
emgordon154
85
492ms
7 days ago
Happy Numbers
emgordon154
90
619ms
7 days ago
Evil Numbers (Long)
emgordon154
69
606ms
7 days ago
Zeckendorf Representation
emgordon154
139
705ms
7 days ago
DFA Simulator
emgordon154
💎
195
610ms
7 days ago
Van Eck Sequence
emgordon154
101
485ms
7 days ago
Collatz
dokutan
89
425ms
7 days ago
ASCII Table
emgordon154
153
480ms
7 days ago
Divisors
emgordon154
88
429ms
7 days ago
Foo Fizz Buzz Bar
emgordon154
138
469ms
7 days ago
Roman to Arabic
JOrE20
1,000
183ms
8 days ago
Musical Chords
JOrE20
5,000
267ms
8 days ago
Roman to Arabic
janAkali
350
190ms
10 days ago
Calendar
dokutan
🥉
384
567ms
11 days ago
Mandelbrot
sean-niemann
🥇
132
633ms
12 days ago
Tutorial
FortuiteMan
252
198ms
12 days ago
π
JOrE20
1,083
141ms
14 days ago
Multitap Input
dokutan
🥈
558
516ms
14 days ago
Day of Week
DialFrost
143
488ms
16 days ago
Prime Numbers
Andrey2001
103
480ms
17 days ago
π
Andrey2001
1,035
466ms
21 days ago
United States
HumanoidCPU
1,037
512ms
18 Jan 2026
Gray Code Decoder
error256
80
482ms
16 Jan 2026
Tutorial
Mefred
252
198ms
15 Jan 2026
Collatz
prestosilver
106
169ms
15 Jan 2026
Musical Chords
HumanoidCPU
480
492ms
14 Jan 2026
Pangram Grep
plcc0
101
464ms
12 Jan 2026
Zodiac Signs
dokutan
642
458ms
11 Jan 2026
Leyland Numbers
emgordon154
122
452ms
11 Jan 2026
Trinomial Triangle
KatieLG-Transpiler
2,143
145ms
9 Jan 2026
Tower of Hanoi
KatieLG-Transpiler
4,144
158ms
9 Jan 2026
Taxicab Numbers
KatieLG-Transpiler
4,701
150ms
9 Jan 2026
Sphenic Numbers
KatieLG-Transpiler
10,716
150ms
9 Jan 2026
Semiprime Numbers
KatieLG-Transpiler
15,470
150ms
9 Jan 2026
Polygon Triangulations
KatieLG-Transpiler
4,564
151ms
9 Jan 2026
Partition Numbers
KatieLG-Transpiler
803
152ms
9 Jan 2026
Odd Polyomino Tiling
KatieLG-Transpiler
21,694
144ms
9 Jan 2026
Mandelbrot
KatieLG-Transpiler
10,101
143ms
9 Jan 2026
Kaprekar Numbers
KatieLG-Transpiler
564
154ms
9 Jan 2026
Hilbert Curve
KatieLG-Transpiler
5,206
153ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
509
154ms
9 Jan 2026
Hexagonal Spiral
KatieLG-Transpiler
1,426
152ms
9 Jan 2026
Apéry’s Constant
KatieLG-Transpiler
1,060
149ms
9 Jan 2026
Tower of Hanoi
fuzzylojik-golf
87
468ms
8 Jan 2026
Quine
CornerMercury
85
154ms
6 Jan 2026
Fibonacci
CheeseCake628
80
157ms
6 Jan 2026
Catalan’s Constant
JOrE20
1,082
148ms
6 Jan 2026
Tongue-twisters
sean-niemann
310
473ms
5 Jan 2026
Scrambled Sort
JOrE20
776
201ms
5 Jan 2026
λ
JOrE20
1,064
149ms
4 Jan 2026
τ
JOrE20
1,083
156ms
4 Jan 2026
√2
JOrE20
1,083
152ms
4 Jan 2026
φ
JOrE20
1,042
150ms
4 Jan 2026
ln 2
JOrE20
1,083
153ms
4 Jan 2026
Prime Numbers (Long)
retrohun
5,989
144ms
1 Jan 2026
24 Game
retrohun
12,464
452ms
1 Jan 2026
Topological Sort
snoozingnewt
209
537ms
30 Dec 2025
Fizz Buzz
JOrE20
90
471ms
29 Dec 2025
Emirp Numbers (Long)
DialFrost
🥈
109
476ms
29 Dec 2025
𝑒
dokutan
748
477ms
27 Dec 2025