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
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
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
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
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
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
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
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
Topological Sort
emgordon154
121
28 mins ago
Morse Decoder
CaedenHarper
156
87 mins ago
Sudoku
CaedenHarper
573
2 hours ago
Sudoku (Fill-in)
CaedenHarper
365
3 hours ago
24 Game
CaedenHarper
263
3 hours ago
Zodiac Signs
CaedenHarper
197
5 hours ago
Topological Sort
CaedenHarper
222
5 hours ago
Emojify
CaedenHarper
114
6 hours ago
Topological Sort
duckyluuk
108
30 hours ago
Star Wars GPT
m-tkach
110
2 days ago
Rijndael S-box
duckyluuk
207
2 days ago
Farey Sequence
CaedenHarper
69
2 days ago
λ
CaedenHarper
316
2 days ago
Kolakoski Constant
CaedenHarper
95
2 days ago
Catalan’s Constant
CaedenHarper
190
2 days ago
Hexdump
CaedenHarper
222
2 days ago
Niven Numbers (Long)
CaedenHarper
51
2 days ago
Transpose Sentence
CaedenHarper
80
2 days ago
Mahjong
CaedenHarper
390
2 days ago
Partition Numbers
duckyluuk
77
2 days ago
Star Wars GPT
CaedenHarper
154
2 days ago
Look and Say
CaedenHarper
80
3 days ago
Arithmetic Numbers
CaedenHarper
73
3 days ago
Lucky Tickets
CaedenHarper
150
3 days ago
Sierpiński Triangle
CaedenHarper
69
3 days ago
Snake
dokutan
265
3 days ago
Smith Numbers
CaedenHarper
118
3 days ago
Ten-pin Bowling
CaedenHarper
285
3 days ago
Intersection
CaedenHarper
110
3 days ago
Abundant Numbers (Long)
CaedenHarper
🥇
59
3 days ago
Mandelbrot
CaedenHarper
118
3 days ago
Divisors
CaedenHarper
🥇
49
3 days ago
Rock-paper-scissors-Spock-lizard
CaedenHarper
303
3 days ago
Ascending Primes
CaedenHarper
100
3 days ago
Time Distance
CaedenHarper
322
3 days ago
Repeating Decimals
CaedenHarper
195
3 days ago
Factorial Factorisation
CaedenHarper
117
3 days ago
Vampire Numbers
CaedenHarper
121
3 days ago
Musical Chords
CaedenHarper
327
3 days ago
Sphenic Numbers
HumanoidCPU
8,872
3 days ago
Gijswijt’s Sequence
CaedenHarper
116
4 days ago
π
Ralac07
1,011
4 days ago
Reversi
snoozingnewt
302
4 days ago
Morse Decoder
KatieLG
345
5 days ago
Smith Numbers
MeWhenI
117
5 days ago
Rijndael S-box
JayXon
🥇
135
5 days ago
N Queens
kg583
113
5 days ago
Topological Sort
HumanoidCPU
231
5 days ago
Happy Numbers
BREMAUCY
106
6 days ago
Niven Numbers
kg583
🥇
43
6 days ago
Pernicious Numbers
duckyluuk
🥇
38
6 days ago
Lucky Tickets
emgordon154
112
6 days ago
Abundant Numbers (Long)
ridingqwerty
64
7 days ago
Leap Years
ridingqwerty
50
7 days ago
Transpose Sentence
fuzzylojik-golf
84
7 days ago
Reverse Polish Notation
fuzzylojik-golf
108
7 days ago
Game of Life
CaedenHarper
148
8 days ago
DFA Simulator
CaedenHarper
271
8 days ago
Leap Years
CaedenHarper
45
8 days ago
Mandelbrot
emgordon154
109
8 days ago
N Queens
CaedenHarper
147
8 days ago
Smith Numbers
SirBogman
122
8 days ago
ISBN
CaedenHarper
96
8 days ago
Star Wars Opening Crawl
CaedenHarper
315
8 days ago
Kaprekar Numbers
CaedenHarper
111
8 days ago
Catalan’s Constant
dokutan
576
9 days ago
ROT13
m-tkach
67
9 days ago
Morse Decoder
SirBogman
186
9 days ago
Spelling Numbers
SirBogman
83
9 days ago
Mandelbrot
SirBogman
133
9 days ago
Partition Numbers
SirBogman
63
9 days ago
Star Wars GPT
SirBogman
125
9 days ago
Card Number Validation
SirBogman
93
9 days ago
Mandelbrot
duckyluuk
107
9 days ago
Poker
CaedenHarper
421
9 days ago