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
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
Multitap Input
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
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
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
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
Multitap Input
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
99 Bottles of Beer
ehulinsky
518
4ms
4 mins ago
ROT13
AstroOrbis
170
51ms
8 mins ago
Billiards
ehulinsky
696
7ms
8 mins ago
Mandelbrot
AstroOrbis
294
74ms
20 mins ago
Tongue-twisters
kg583
342
4ms
31 mins ago
Odious Numbers
AstroOrbis
102
51ms
63 mins ago
Odious Numbers (Long)
AstroOrbis
105
51ms
66 mins ago
Gray Code Decoder
GolfingSuccess
112
43ms
81 mins ago
Multitap Input
sean-niemann
92
9ms
2 hours ago
Multitap Input
sean-niemann
91
129ms
2 hours ago
Fizz Buzz
DialFrost
81
4ms
2 hours ago
Multitap Input
kumavale
159
155ms
2 hours ago
Abundant Numbers
DialFrost
🥉
60
6ms
2 hours ago
Abundant Numbers (Long)
DialFrost
🥇
61
26ms
2 hours ago
Cubes
Positronico
322
265ms
3 hours ago
Tutorial
uKann
431
2ms
3 hours ago
Rule 110
junkondo-jp
136
11ms
3 hours ago
Prime Numbers (Long)
DialFrost
🥇
51
405ms
3 hours ago
Prime Numbers (Long)
DialFrost
67
1,822ms
4 hours ago
Prime Numbers
DialFrost
🥉
49
1,147ms
4 hours ago
Ten-pin Bowling
edsrzf
101
34ms
4 hours ago
Calendar
AlephSquirrel
🦄
141
46ms
4 hours ago
Tutorial
frosster
67
2ms
4 hours ago
CSS Colors
ryyyn
625
18ms
4 hours ago
Topological Sort
jgbaldwinbrown
238
4ms
4 hours ago
Ten-pin Bowling
edsrzf
🥈
140
7ms
5 hours ago
Fibonacci
AstroOrbis
70
47ms
5 hours ago
Transpose Sentence
AstroOrbis
541
4ms
6 hours ago
Ten-pin Bowling
edsrzf
136
10ms
6 hours ago
Ten-pin Bowling
edsrzf
💎
186
3ms
6 hours ago
Leap Years
luuumine
98
2ms
7 hours ago
Quine
DialFrost
🥈
37
128ms
7 hours ago
Zodiac Signs
dokutan
491
125ms
7 hours ago
Zodiac Signs
dokutan
491
64ms
7 hours ago
Taxicab Numbers
dokutan
142
490ms
7 hours ago
Fibonacci
luuumine
95
2ms
7 hours ago
Emirp Numbers (Long)
DialFrost
74
47ms
8 hours ago
Look and Say
error256
🥇
53
37ms
8 hours ago
Seven Segment
bitsandbeyond
226
52ms
8 hours ago
Multitap Input
frankgraziano
322
653ms
8 hours ago
Fizz Buzz
Zuzu31
83
2ms
8 hours ago
Collatz
DialFrost
78
6ms
8 hours ago
Prime Numbers
DialFrost
54
92ms
8 hours ago
Prime Numbers (Long)
DialFrost
🥉
56
595ms
8 hours ago
Levenshtein Distance
DialFrost
226
105ms
8 hours ago
Ten-pin Bowling
kg583
🥈
169
5ms
8 hours ago
Sudoku
amazingalek
2,087
413ms
8 hours ago
Abundant Numbers
DialFrost
66
96ms
8 hours ago
Abundant Numbers (Long)
DialFrost
🥇
67
136ms
8 hours ago
Multitap Input
albanian-laundromat
158
4ms
9 hours ago
Abundant Numbers (Long)
blaztoma
65
48ms
9 hours ago
Seven Segment
CommandLeo
142
9ms
9 hours ago
Multitap Input
rucin93
153
62ms
9 hours ago
Scrambled Sort
blaztoma
92
11ms
10 hours ago
Gijswijt’s Sequence
amazingalek
1,039
421ms
10 hours ago
24 Game
amazingalek
4,200
461ms
10 hours ago
Fibonacci
Andrey2001
118
6ms
10 hours ago
Look and Say
jkelly467
111
2,128ms
10 hours ago
Fibonacci
Andrey2001
84
102ms
10 hours ago
Fibonacci
Andrey2001
59
2ms
10 hours ago
Quine
DialFrost
99
2ms
10 hours ago
Fibonacci
albanian-laundromat
72
2ms
10 hours ago
Fibonacci
Andrey2001
87
27ms
10 hours ago
Fibonacci
Andrey2001
70
1,297ms
11 hours ago
Niven Numbers (Long)
albanian-laundromat
🥇
69
450ms
11 hours ago
Fibonacci
Andrey2001
71
4ms
11 hours ago
Niven Numbers
albanian-laundromat
48
5ms
11 hours ago
Niven Numbers
albanian-laundromat
67
25ms
11 hours ago
Happy Numbers (Long)
DialFrost
111
4ms
11 hours ago
Tutorial
Mefred
31
5ms
11 hours ago
Foo Fizz Buzz Bar
DialFrost
113
3ms
11 hours ago
Fibonacci
Andrey2001
36
60ms
11 hours ago
Tutorial
Mefred
119
2ms
11 hours ago
Abundant Numbers (Long)
DialFrost
67
40ms
11 hours ago
Abundant Numbers
DialFrost
67
4ms
11 hours ago
Divisors
DialFrost
🥇
61
3ms
11 hours ago
Tutorial
Mefred
218
45ms
11 hours ago
Tutorial
Mefred
141
15ms
11 hours ago
Tutorial
Mefred
188
11ms
11 hours ago
Tutorial
Mefred
179
3ms
11 hours ago