Recent Solutions
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
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
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
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
Transpose Sentence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
Trinomial Triangle
Turtle
Tutorial
All Languages
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
F#
Factor
Forth
Fortran
Gleam
Go
GolfScript
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
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Groovy
Harbour
Hare
Haxe
Hush
Hy
iogii
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
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
F#
Factor
Forth
Fortran
Gleam
Go
GolfScript
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
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Groovy
Harbour
Hare
Haxe
Hush
Hy
iogii
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
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
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
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
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
Transpose Sentence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
ROT13
albanian-laundromat
🥉
141
28 mins ago
Fractions
albanian-laundromat
194
53 mins ago
Mahjong
albanian-laundromat
🥈
497
101 mins ago
Kaprekar Numbers
albanian-laundromat
172
2 hours ago
Apéry’s Constant
albanian-laundromat
317
17 hours ago
Time Distance
albanian-laundromat
318
18 hours ago
Happy Numbers (Long)
albanian-laundromat
119
19 hours ago
Polyominoes
albanian-laundromat
🥈
461
20 hours ago
Sudoku (Fill-in)
albanian-laundromat
💎
308
20 hours ago
Maze
albanian-laundromat
🥈
224
20 hours ago
Hexdump
edsrzf
💎
273
24 hours ago
Prime Numbers (Long)
albanian-laundromat
🥇
54
25 hours ago
Kolakoski Sequence
albanian-laundromat
78
25 hours ago
brainfuck
albanian-laundromat
267
40 hours ago
Roman to Arabic
albanian-laundromat
182
40 hours ago
Fractions
edsrzf
166
42 hours ago
Billiards
edsrzf
💎
229
42 hours ago
Mandelbrot
MeWhenI
🥉
144
2 days ago
ISBN
albanian-laundromat
143
2 days ago
Factorial Factorisation
albanian-laundromat
🥉
142
2 days ago
Seven Segment
albanian-laundromat
🥈
166
2 days ago
Ordinal Numbers
albanian-laundromat
141
2 days ago
Intersection
albanian-laundromat
🥉
202
2 days ago
Jacobi Symbol
albanian-laundromat
298
2 days ago
Christmas Trees
albanian-laundromat
87
2 days ago
ASCII Table
albanian-laundromat
155
2 days ago
99 Bottles of Beer
albanian-laundromat
276
2 days ago
Hexdump
albanian-laundromat
🥈
279
2 days ago
Foo Fizz Buzz Bar
albanian-laundromat
114
2 days ago
Fizz Buzz
albanian-laundromat
76
2 days ago
12 Days of Christmas
albanian-laundromat
470
2 days ago
Emirp Numbers (Long)
albanian-laundromat
🥉
125
4 days ago
Proximity Grid
albanian-laundromat
310
4 days ago
Mandelbrot
albanian-laundromat
169
4 days ago
QR Decoder
albanian-laundromat
326
4 days ago
Reverse Polish Notation
albanian-laundromat
197
4 days ago
Day of Week
albanian-laundromat
🥉
267
4 days ago
Scrambled Sort
albanian-laundromat
💎
188
4 days ago
24 Game
albanian-laundromat
🥉
522
5 days ago
Mandelbrot
edsrzf
💎
138
5 days ago
Billiards
albanian-laundromat
288
5 days ago
Card Number Validation
albanian-laundromat
147
5 days ago
Morse Decoder
albanian-laundromat
408
5 days ago
Zodiac Signs
albanian-laundromat
💎
228
5 days ago
γ
albanian-laundromat
💎
554
5 days ago
Lucky Tickets
albanian-laundromat
🥈
233
5 days ago
Mandelbrot
sean-niemann
🥈
140
5 days ago
Mandelbrot
dokutan
374
5 days ago
Mandelbrot
rucin93
146
5 days ago
Tongue-twisters
Mukundan314
🥈
297
5 days ago
Set
albanian-laundromat
🥈
234
5 days ago
𝑒
albanian-laundromat
245
5 days ago
Mandelbrot
HumanoidCPU
10,019
5 days ago
Quine
albanian-laundromat
145
6 days ago
CSS Colors
albanian-laundromat
🥉
1,045
6 days ago
Rock-paper-scissors-Spock-lizard
albanian-laundromat
351
6 days ago
SI Units
albanian-laundromat
🥈
681
6 days ago
Ten-pin Bowling
albanian-laundromat
🥉
325
6 days ago
Reversi
albanian-laundromat
🥉
314
6 days ago
Odious Numbers (Long)
albanian-laundromat
74
6 days ago
Repeating Decimals
albanian-laundromat
💎
311
6 days ago
Vampire Numbers
albanian-laundromat
🥈
203
6 days ago
DFA Simulator
edsrzf
🥉
222
6 days ago
Morse Encoder
albanian-laundromat
347
6 days ago
Evil Numbers
albanian-laundromat
61
6 days ago
Emojify
albanian-laundromat
337
6 days ago
Arrows
albanian-laundromat
189
6 days ago
Niven Numbers
albanian-laundromat
65
6 days ago
Odious Numbers
albanian-laundromat
59
6 days ago
Pangram Grep
albanian-laundromat
128
6 days ago
Pernicious Numbers
albanian-laundromat
69
6 days ago
United States
albanian-laundromat
376
6 days ago
λ
albanian-laundromat
🥉
558
7 days ago
Musical Chords
albanian-laundromat
🥉
386
7 days ago
Sudoku
albanian-laundromat
💎
544
8 days ago