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
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
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
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
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
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
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
APL
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
><>
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
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
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
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
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
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
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Odd Polyomino Tiling
madex
764
13ms
47 mins ago
brainfuck
snoozingnewt
193
21ms
3 hours ago
Arrows
blaztoma
110
13ms
3 hours ago
Kaprekar Numbers
GrayJoKing
84
4,802ms
4 hours ago
Quine
carotinoid
32
9ms
5 hours ago
Abundant Numbers
sean-niemann
🥇
51
28ms
5 hours ago
Fibonacci
carotinoid
38
11ms
5 hours ago
Happy Numbers
solisolu
83
17ms
5 hours ago
Emojify
carotinoid
265
10ms
5 hours ago
Gijswijt’s Sequence
Seek64
82
11ms
6 hours ago
Lucky Numbers
Emutis
60
12ms
7 hours ago
Emirp Numbers (Long)
Emutis
82
117ms
7 hours ago
Rijndael S-box
Emutis
142
24ms
7 hours ago
Game of Life
sean-niemann
118
22ms
9 hours ago
Prime Numbers
BrunoVisnadi
41
10ms
9 hours ago
Emirp Numbers (Long)
BrunoVisnadi
85
261ms
9 hours ago
Transpose Sentence
BrunoVisnadi
107
13ms
9 hours ago
Gijswijt’s Sequence
emgordon154
79
11ms
12 hours ago
Card Number Validation
BrunoVisnadi
99
17ms
12 hours ago
Star Wars GPT
jameswmccarty
322
12ms
12 hours ago
Transpose Sentence
cefqrn
116
10ms
14 hours ago
Continued Fractions
duckyluuk
🥇
123
30ms
15 hours ago
Tower of Hanoi
Flekay
56
20ms
15 hours ago
Zodiac Signs
blaztoma
151
11ms
16 hours ago
DFA Simulator
solisolu
179
14ms
16 hours ago
Gray Code Decoder
CaedenHarper
75
149ms
18 hours ago
Seven Segment
kg583
116
10ms
18 hours ago
Gray Code Encoder
CaedenHarper
62
23ms
18 hours ago
Spelling Numbers
Aquateraneal
536
14ms
19 hours ago
Tutorial
ColeWyeth
79
16ms
19 hours ago
99 Bottles of Beer
Aquateraneal
269
11ms
19 hours ago
Intersection
Aquateraneal
135
11ms
19 hours ago
Continued Fractions
Aquateraneal
141
46ms
19 hours ago
Pangram Grep
Aquateraneal
89
19ms
19 hours ago
Pascal’s Triangle
Aquateraneal
74
19ms
19 hours ago
Card Number Validation
retrohun
121
12ms
19 hours ago
τ
Aquateraneal
174
17ms
19 hours ago
π
Aquateraneal
160
16ms
19 hours ago
Transpose Sentence
zgialor-lab
124
12ms
19 hours ago
Multitap Input
StefanHabel
132
15ms
20 hours ago
Happy Numbers (Long)
Emutis
100
20ms
20 hours ago
12 Days of Christmas
Matter1024
491
10ms
23 hours ago
Pernicious Numbers
Languag3
47
10ms
24 hours ago
Rock-paper-scissors-Spock-lizard
blaztoma
207
16ms
24 hours ago
Niven Numbers
Emutis
46
10ms
24 hours ago
Niven Numbers (Long)
Emutis
52
14ms
26 hours ago
Smith Numbers
Emutis
122
2,124ms
26 hours ago
Smith Numbers
blaztoma
117
4,604ms
27 hours ago
τ
Matter1024
82
11ms
27 hours ago
π
Matter1024
82
11ms
27 hours ago
Niven Numbers (Long)
blaztoma
51
15ms
27 hours ago
QR Decoder
madex
273
16ms
28 hours ago
Abundant Numbers
blaztoma
63
10ms
28 hours ago
Prime Numbers (Long)
zacjl
52
4,450ms
28 hours ago
Niven Numbers
blaztoma
🥇
44
10ms
28 hours ago
Niven Numbers
zacjl
45
10ms
28 hours ago
Recamán
blaztoma
62
11ms
29 hours ago
Ascending Primes
kitotch
240
921ms
33 hours ago
Zeckendorf Representation
kitotch
137
11ms
33 hours ago
Forsyth–Edwards Notation
kitotch
164
10ms
34 hours ago
Fractions
kitotch
120
12ms
34 hours ago
Factorial Factorisation
kitotch
157
31ms
34 hours ago
Lucky Tickets
fuzzylojik-golf
105
30ms
36 hours ago
Tower of Hanoi
edsrzf
55
12ms
36 hours ago
Abundant Numbers
mper-era
102
11ms
39 hours ago
Crossword
madex
1,796
4,901ms
39 hours ago
Polyominoes
madex
271
24ms
40 hours ago
λ
blaztoma
180
121ms
40 hours ago
Alphabetic Numbers
5cw
181
12ms
42 hours ago
Sierpiński Triangle
edsrzf
63
12ms
42 hours ago
Repeating Decimals
Program-Pi
229
17ms
44 hours ago
Hexdump
firegene
144
10ms
46 hours ago
Prime Numbers
Matter1024
42
10ms
2 days ago
Rectangle Fill
hallvabo
183
11ms
2 days ago
Catalan’s Constant
TheSecondComing123
145
25ms
2 days ago
Set
tomh1012
190
39ms
2 days ago
φ
kitotch
94
12ms
2 days ago
Polyominoes
blaztoma
202
21ms
2 days ago
ASCII Table
Languag3
112
10ms
2 days ago
Fibonacci
plcc0
🥇
36
10ms
2 days ago