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
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
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
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 Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Mandelbrot
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
QR Encoder
Quadratic Formula
Scrambled Alphabetization
Semiprime Numbers
Snake
Sphenic Numbers
Star Wars GPT
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
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
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
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
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
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 Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Mandelbrot
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
QR Encoder
Quadratic Formula
Scrambled Alphabetization
Semiprime Numbers
Snake
Sphenic Numbers
Star Wars GPT
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
SI Units
edsrzf
💎
618
67 mins ago
Set
error256
282
12 hours ago
Set
keelimeguy
🥉
251
15 hours ago
Tic-tac-toe
KatieLG
16,441
24 hours ago
Rule 110
edsrzf
168
2 days ago
Pascal’s Triangle
dokutan
123
2 days ago
Leap Years
martindotexe
102
3 days ago
Fibonacci
martindotexe
🥇
79
3 days ago
Pernicious Numbers (Long)
pardouin
🥇
98
4 days ago
Tongue-twisters
ereztaiar
574
4 days ago
Reverse Polish Notation
ereztaiar
492
4 days ago
Proximity Grid
ereztaiar
1,407
4 days ago
𝑒
ereztaiar
296
5 days ago
Tutorial
HumanoidCPU
122
8 days ago
Mandelbrot
Shanethegamer
10,051
8 days ago
Hilbert Curve
Shanethegamer
5,165
8 days ago
Tutorial
MeWhenI
122
8 days ago
Inventory Sequence
sean-niemann
🥇
106
8 days ago
Seven Segment
ereztaiar
311
8 days ago
Forsyth–Edwards Notation
edsrzf
211
9 days ago
Reversi
error256
🥉
236
10 days ago
Look and Say
edsrzf
170
11 days ago
Levenshtein Distance
sean-niemann
250
12 days ago
Hilbert Curve
HumanoidCPU
5,165
13 days ago
ASCII Table
sean-niemann
🥇
154
15 days ago
Niven Numbers (Long)
DialFrost
🥇
102
15 days ago
Lucky Numbers
albanian-laundromat
207
16 days ago
Happy Numbers
albanian-laundromat
157
16 days ago
Partition Numbers
JayXon
🥇
110
17 days ago
Partition Numbers
pardouin
🥇
110
17 days ago
Set
pardouin
🥇
222
17 days ago
Tic-tac-toe
ereztaiar
395
18 days ago
Set
edsrzf
🥇
222
18 days ago
Seven Segment
dokutan
474
18 days ago
Fractions
dokutan
333
18 days ago
Maze
dokutan
509
18 days ago
Musical Chords
stefangimmillaro
🥈
253
19 days ago
𝑒
JayXon
💎
137
21 days ago
Fibonacci
albanian-laundromat
94
22 days ago
Tutorial
janlelis
121
23 days ago
brainfuck
KasperKivimaeki
🥈
255
23 days ago
Diamonds
ereztaiar
294
23 days ago
Tutorial
retrohun
275
24 days ago
Tutorial
ereztaiar
137
24 days ago
Trinomial Triangle
ereztaiar
321
24 days ago
Quine
snoozingnewt
114
26 days ago
Recamán
dokutan
373
26 days ago
Partition Numbers
dokutan
146
26 days ago
Quine
plcc0
114
26 days ago
ASCII Table
ereztaiar
338
26 days ago
Number Spiral
ereztaiar
449
26 days ago
Fibonacci
ereztaiar
132
27 days ago
Fizz Buzz
ereztaiar
162
27 days ago
Leap Years
albanian-laundromat
101
29 Mar 2025
Fizz Buzz
sean-niemann
112
28 Mar 2025
Tic-tac-toe
keelimeguy
🥇
153
28 Mar 2025
Fibonacci
plcc0
81
28 Mar 2025
ln 2
calum12345
1,059
27 Mar 2025
Fibonacci
heanyang1
82
27 Mar 2025
Tutorial
WasixXD
129
26 Mar 2025
Foo Fizz Buzz Bar
mpldr
223
25 Mar 2025
Niven Numbers
mpldr
141
25 Mar 2025
99 Bottles of Beer
mpldr
428
25 Mar 2025
12 Days of Christmas
mpldr
649
25 Mar 2025
Partition Numbers
mpldr
698
25 Mar 2025
Quine
mpldr
134
25 Mar 2025
Leap Years
sean-niemann
88
25 Mar 2025
Polyominoes
dokutan
🥈
963
25 Mar 2025
Cubes
dokutan
631
25 Mar 2025
Jacobi Symbol
dokutan
219
24 Mar 2025
Catalan Numbers
dokutan
153
24 Mar 2025
Rijndael S-box
dokutan
720
24 Mar 2025
24 Game
dokutan
🥉
4,212
24 Mar 2025
Rule 110
dokutan
1,370
24 Mar 2025
99 Bottles of Beer
dokutan
444
24 Mar 2025