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
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
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
Topological Sort
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
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth 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
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
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
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
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
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
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
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
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
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
Topological Sort
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
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
Quine
edsrzf
86
3 hours ago
99 Bottles of Beer
acotis
287
27 hours ago
Ten-pin Bowling
kumavale
🥉
218
3 days ago
Tutorial
snoozingnewt
103
3 days ago
Odious Numbers
snoozingnewt
68
4 days ago
Evil Numbers
snoozingnewt
68
4 days ago
π
kumavale
217
4 days ago
Seven Segment
kumavale
211
4 days ago
CSS Colors
kumavale
🥉
801
4 days ago
Happy Numbers (Long)
snoozingnewt
142
5 days ago
Happy Numbers
snoozingnewt
131
5 days ago
Pangram Grep
snoozingnewt
183
5 days ago
ISBN
kumavale
164
5 days ago
Happy Numbers (Long)
kumavale
119
5 days ago
Emirp Numbers (Long)
kumavale
137
5 days ago
Tic-tac-toe
kumavale
🥉
165
6 days ago
ASCII Table
CSRessel
174
6 days ago
𝑒
cthierfelder
1,025
6 days ago
Tutorial
kumavale
102
6 days ago
Tutorial
targrik
107
7 days ago
Sierpiński Triangle
emgordon154
112
8 days ago
Sierpiński Triangle
kumavale
98
8 days ago
Van Eck Sequence
kumavale
99
8 days ago
Leap Years
kumavale
62
9 days ago
Emirp Numbers
kumavale
🥈
102
9 days ago
Hilbert Curve
LordSir101
5,138
10 days ago
Spelling Numbers
kumavale
546
10 days ago
Rule 110
kumavale
131
10 days ago
𝑒
kumavale
140
10 days ago
Recamán
kumavale
118
11 days ago
Morse Encoder
kumavale
🥉
221
11 days ago
Hilbert Curve
5cw
💎
255
11 days ago
Hilbert Curve
Zounon
5,142
11 days ago
Odious Numbers (Long)
kumavale
🥈
63
11 days ago
Evil Numbers (Long)
kumavale
🥈
63
11 days ago
Fizz Buzz
AdamMorris377
127
11 days ago
Niven Numbers (Long)
kumavale
🥇
77
11 days ago
Collatz
Arkadios200
106
13 days ago
Arrows
emgordon154
182
15 days ago
Pernicious Numbers (Long)
kumavale
🥇
74
15 days ago
Collatz
kumavale
🥉
90
15 days ago
Abundant Numbers
fuzzylojik-golf
81
15 days ago
Abundant Numbers (Long)
fuzzylojik-golf
82
15 days ago
Fibonacci
fuzzylojik-golf
67
16 days ago
Inventory Sequence
blaztoma
121
16 days ago
Look and Say
kumavale
189
18 days ago
Divisors
qpwoeirut
124
18 days ago
Hilbert Curve
madex
🥉
1,377
18 days ago
Diamonds
kumavale
🥈
103
18 days ago
Hexagonal Spiral
dokutan
1,796
19 days ago
Christmas Trees
kumavale
🥇
89
19 days ago
Pernicious Numbers (Long)
fuzzylojik-golf
🥇
74
20 days ago
Arrows
kumavale
🥇
155
20 days ago
Hilbert Curve
dokutan
🥈
576
21 days ago
Hilbert Curve
CaedenHarper
5,138
21 days ago
Abundant Numbers (Long)
kumavale
🥇
79
21 days ago
Evil Numbers (Long)
fuzzylojik-golf
65
22 days ago
Repeating Decimals
acotis
🥉
308
22 days ago
Lucky Tickets
acotis
316
22 days ago
Arrows
JayXon
🥇
155
22 days ago
Number Spiral
acotis
165
22 days ago
Pascal’s Triangle
kumavale
🥇
82
22 days ago
Prime Numbers
kumavale
🥇
61
23 days ago
Fibonacci
CaedenHarper
68
23 days ago
Pernicious Numbers
kumavale
🥇
55
23 days ago
Foo Fizz Buzz Bar
kumavale
🥈
131
23 days ago
Roman to Arabic
kumavale
🥉
132
24 days ago
12 Days of Christmas
kumavale
495
24 days ago
Vampire Numbers
kumavale
193
24 days ago
ROT13
edsrzf
126
24 days ago
Quine
fuzzylojik-golf
66
27 days ago
99 Bottles of Beer
kumavale
322
27 days ago
Roman to Arabic
CaedenHarper
149
27 days ago
Kolakoski Constant
kumavale
🥉
198
27 days ago
Ordinal Numbers
kumavale
137
27 days ago