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 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 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
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 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 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
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
Maze
acotis
🥈
208
7 hours ago
Intersection
connor-grady
198
33 hours ago
Star Wars GPT
emgordon154
🥈
244
2 days ago
Lucky Numbers
DialFrost
🥉
102
2 days ago
Mahjong
acotis
💎
284
2 days ago
ASCII Table
DialFrost
155
4 days ago
Kolakoski Constant
sean-niemann
💎
191
4 days ago
ROT13
error256
133
5 days ago
ROT13
KasperKivimaeki
152
5 days ago
ROT13
JayXon
💎
114
5 days ago
Tutorial
ovs-code
103
6 days ago
ASCII Table
acotis
🥇
143
6 days ago
Proximity Grid
acotis
345
7 days ago
Star Wars GPT
acotis
💎
226
7 days ago
Set
acotis
🥉
208
7 days ago
Ten-pin Bowling
acotis
301
7 days ago
Star Wars Opening Crawl
acotis
489
8 days ago
12 Days of Christmas
JayXon
🥇
477
8 days ago
12 Days of Christmas
acotis
🥇
477
8 days ago
Rule 110
acotis
🥇
109
9 days ago
Jacobi Symbol
acotis
221
9 days ago
ROT13
acotis
🥈
115
10 days ago
Ten-pin Bowling
JayXon
💎
186
10 days ago
Game of Life
JayXon
💎
153
10 days ago
Fractions
ovs-code
🥈
144
11 days ago
Billiards
ovs-code
💎
236
11 days ago
Game of Life
acotis
🥈
162
11 days ago
Card Number Validation
acotis
🥉
119
11 days ago
QR Decoder
acotis
🥈
233
11 days ago
Pascal’s Triangle
dokutan
97
11 days ago
Set
error256
💎
180
11 days ago
Trinomial Triangle
KatieLG
2,106
11 days ago
Sphenic Numbers
KatieLG
10,679
11 days ago
Semiprime Numbers
KatieLG
15,433
11 days ago
Odd Polyomino Tiling
KatieLG
21,657
11 days ago
Minesweeper
KatieLG
15,832
11 days ago
Mandelbrot
KatieLG
10,064
11 days ago
Hilbert Curve
KatieLG
5,169
11 days ago
Highly Composite Numbers
KatieLG
472
11 days ago
Hexagonal Spiral
KatieLG
1,389
11 days ago
Floyd-Steinberg Dithering
KatieLG
12,763
11 days ago
Flags
KatieLG
6,028
11 days ago
Poker
acotis
445
11 days ago
Emojify
acotis
261
11 days ago
Ten-pin Bowling
ovs-code
🥈
187
12 days ago
Polyominoes
ovs-code
💎
224
13 days ago
Intersection
acotis
198
13 days ago
Collatz
CosmicRaichu
110
13 days ago
Emirp Numbers
ovs-code
132
13 days ago
Emirp Numbers (Long)
ovs-code
133
13 days ago
Quine
ovs-code
🥇
45
13 days ago
Card Number Validation
ovs-code
122
13 days ago
Tic-tac-toe
KatieLG
18,334
13 days ago
Seven Segment
acotis
🥉
176
14 days ago
Christmas Trees
acotis
🥈
92
14 days ago
Look and Say
JayXon
🥇
133
14 days ago
Look and Say
ovs-code
🥇
133
14 days ago
Arabic to Roman
ovs-code
200
14 days ago
Sudoku
acotis
🥈
535
14 days ago
Reverse Polish Notation
acotis
227
15 days ago
Sudoku (Fill-in)
acotis
🥉
328
15 days ago
99 Bottles of Beer
acotis
289
15 days ago
𝑒
DialFrost
117
15 days ago
φ
ovs-code
🥉
165
15 days ago
Morse Encoder
acotis
🥈
218
15 days ago
Jacobi Symbol
ovs-code
🥈
186
15 days ago
ln 2
ovs-code
💎
151
15 days ago
Foo Fizz Buzz Bar
ovs-code
166
15 days ago
Gijswijt’s Sequence
ovs-code
148
15 days ago
Reverse Polish Notation
edsrzf
🥉
224
15 days ago
Sierpiński Triangle
acotis
92
15 days ago
Rule 110
JayXon
🥇
109
16 days ago
Lucky Numbers
ovs-code
🥈
101
16 days ago
Pascal’s Triangle
ovs-code
🥇
82
16 days ago
Recamán
ovs-code
🥈
94
16 days ago