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
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)
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
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
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)
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
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
Star Wars GPT
arcpolaris
309
498ms
7 hours ago
12 Days of Christmas
kasarino
612
496ms
16 hours ago
Fibonacci
Zach1031
71
405ms
36 hours ago
Odious Numbers (Long)
kasarino
162
415ms
45 hours ago
Evil Numbers (Long)
kasarino
98
418ms
45 hours ago
Gray Code Encoder
JayXon
🥇
66
465ms
2 days ago
ASCII Table
kasarino
274
389ms
2 days ago
Arrows
arcpolaris
226
495ms
2 days ago
ASCII Table
arcpolaris
184
428ms
2 days ago
Pernicious Numbers
kasarino
155
379ms
3 days ago
Gray Code Encoder
snoozingnewt
73
435ms
3 days ago
Pangram Grep
kasarino
143
428ms
4 days ago
Rijndael S-box
jusaka
847
388ms
4 days ago
λ
jusaka
1,067
376ms
4 days ago
Happy Numbers
jusaka
181
404ms
4 days ago
Tutorial
jusaka
166
431ms
4 days ago
Gray Code Decoder
namelessiw
🥇
66
444ms
4 days ago
Proximity Grid
tomh1012
513
526ms
4 days ago
Fizz Buzz
jusaka
126
423ms
4 days ago
Abundant Numbers (Long)
kasarino
91
428ms
5 days ago
Calendar
kasarino
561
500ms
5 days ago
Gray Code Decoder
stefangimmillaro
69
398ms
5 days ago
Fractions
michelebastione
157
464ms
5 days ago
Gray Code Encoder
stefangimmillaro
🥇
66
453ms
5 days ago
Rijndael S-box
Carlos-EAC
800
394ms
6 days ago
Lucky Tickets
fuzzylojik-golf
🥉
163
477ms
6 days ago
Gray Code Decoder
Steffan153
69
468ms
6 days ago
𝑒
arcpolaris
146
464ms
6 days ago
Kolakoski Constant
Yax42
150
450ms
6 days ago
Gray Code Decoder
MeWhenI
81
428ms
6 days ago
Gray Code Encoder
michelebastione
71
493ms
7 days ago
Gray Code Decoder
michelebastione
98
454ms
7 days ago
Fibonacci
Matter1024
60
374ms
7 days ago
Tic-tac-toe
matanberstadt
134
435ms
7 days ago
Gray Code Decoder
HumanoidCPU
120
401ms
7 days ago
Pernicious Numbers
madex
78
406ms
8 days ago
Repeating Decimals
CaedenHarper
239
433ms
10 days ago
Divisors
fuzzylojik-golf
75
432ms
10 days ago
Kolakoski Constant
tomh1012
209
484ms
10 days ago
Kaprekar Numbers
tomh1012
135
1,073ms
10 days ago
Forsyth–Edwards Notation
tomh1012
179
438ms
10 days ago
Spelling Numbers
Yax42
385
426ms
10 days ago
Gray Code Encoder
dokutan
84
382ms
10 days ago
Gray Code Encoder
MeWhenI
69
413ms
10 days ago
Gray Code Encoder
Steffan153
🥇
66
436ms
11 days ago
Spelling Numbers
prestosilver
404
426ms
11 days ago
SI Units
Yax42
555
438ms
11 days ago
SI Units
tomh1012
804
441ms
11 days ago
Farey Sequence
tomh1012
149
433ms
11 days ago
Mandelbrot
tomh1012
308
405ms
11 days ago
Gray Code Encoder
edsrzf
🥇
66
451ms
11 days ago
Gray Code Encoder
HumanoidCPU
85
434ms
12 days ago
ROT13
Steffan153
🥇
79
435ms
12 days ago
99 Bottles of Beer
aliakseikalosha
304
437ms
12 days ago
Medal Tally
kasarino
377
445ms
12 days ago
Gray Code Decoder
CaedenHarper
87
380ms
13 days ago
π
tomh1012
144
406ms
13 days ago
Musical Chords
tomh1012
558
467ms
13 days ago
Gray Code Decoder
tomh1012
97
378ms
13 days ago
Gray Code Encoder
tomh1012
67
429ms
13 days ago
Gray Code Encoder
fuzzylojik-golf
🥇
66
447ms
14 days ago
Continued Fractions
arcpolaris
179
453ms
14 days ago
Pascal’s Triangle
kasarino
98
367ms
14 days ago
Prime Numbers (Long)
kasarino
79
394ms
14 days ago
Emirp Numbers
kasarino
192
372ms
14 days ago
Happy Numbers
kasarino
159
367ms
14 days ago
Leap Years
Steffan153
🥇
59
386ms
14 days ago
Gray Code Encoder
Yax42
🥇
66
446ms
14 days ago
Sierpiński Triangle
arcpolaris
587
378ms
15 days ago
Gray Code Encoder
CaedenHarper
69
486ms
15 days ago
Gray Code Decoder
error256
69
398ms
15 days ago
Fizz Buzz
Mezzofloat
89
381ms
17 days ago
Prime Numbers (Long)
Steffan153
🥇
66
476ms
19 days ago
Recamán
michelebastione
106
446ms
19 days ago
Continued Fractions
michelebastione
221
460ms
19 days ago
Abundant Numbers
AdrienHache
82
422ms
19 days ago
Mahjong
Yax42
410
889ms
19 days ago
𝑒
kasarino
162
413ms
20 days ago
Foo Fizz Buzz Bar
kasarino
140
393ms
20 days ago
Collatz
kasarino
94
390ms
20 days ago