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
Topological Sort
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
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
Topological Sort
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
ROT13
kaascevich
🥈
114
2 days ago
Hexdump
kaascevich
288
2 days ago
Sphenic Numbers
HumanoidCPU
8,874
2 days ago
N Queens
edsrzf
💎
148
3 days ago
Niven Numbers
The-Wolfson
75
4 days ago
Niven Numbers
edsrzf
🥇
45
5 days ago
Tongue-twisters
CaedenHarper
537
7 days ago
Diamonds
kaascevich
127
7 days ago
Van Eck Sequence
dokutan
1,200
7 days ago
Vampire Numbers
dokutan
649
7 days ago
Look and Say
dokutan
1,306
7 days ago
Leyland Numbers
dokutan
1,000
7 days ago
Kolakoski Constant
dokutan
638
7 days ago
Happy Numbers (Long)
dokutan
309
7 days ago
Happy Numbers
dokutan
87
7 days ago
Emirp Numbers (Long)
dokutan
657
7 days ago
Emirp Numbers
dokutan
105
7 days ago
𝑒
dokutan
645
7 days ago
√2
dokutan
654
7 days ago
φ
dokutan
639
7 days ago
τ
dokutan
660
7 days ago
π
dokutan
650
7 days ago
λ
dokutan
632
7 days ago
γ
dokutan
🥉
650
7 days ago
Catalan’s Constant
dokutan
637
7 days ago
ln 2
dokutan
641
7 days ago
Divisors
dokutan
74
8 days ago
Catalan Numbers
dokutan
2,979
8 days ago
Inventory Sequence
dokutan
1,084
8 days ago
Smith Numbers
dokutan
1,082
8 days ago
Lucky Numbers
dokutan
2,743
8 days ago
Day of Week
JayXon
🥇
145
8 days ago
Day of Week
kaascevich
🥇
145
8 days ago
Morse Decoder
kaascevich
386
9 days ago
Medal Tally
kaascevich
238
9 days ago
Pernicious Numbers
edsrzf
🥇
38
9 days ago
Morse Encoder
kaascevich
298
9 days ago
Emirp Numbers (Long)
kaascevich
118
9 days ago
Niven Numbers
kaascevich
69
9 days ago
Emirp Numbers
kaascevich
95
9 days ago
ISBN
kaascevich
123
9 days ago
Happy Numbers
kaascevich
94
9 days ago
Game of Life
kaascevich
220
9 days ago
ASCII Table
kaascevich
196
9 days ago
Fibonacci
kaascevich
51
10 days ago
Fizz Buzz
kaascevich
78
10 days ago
Foo Fizz Buzz Bar
kaascevich
🥇
105
10 days ago
Tongue-twisters
kaascevich
421
10 days ago
Transpose Sentence
kaascevich
134
11 days ago
brainfuck
kaascevich
🥉
284
11 days ago
Ordinal Numbers
kaascevich
108
11 days ago
Spelling Numbers
kaascevich
360
11 days ago
Time Distance
kaascevich
🥉
271
11 days ago
Seven Segment
kaascevich
192
11 days ago
Van Eck Sequence
kaascevich
119
12 days ago
Pangram Grep
kaascevich
93
12 days ago
Prime Numbers (Long)
fuzzylojik-golf
59
12 days ago
Quine
dokutan
64
14 days ago
Fizz Buzz
dokutan
97
15 days ago
Fizz Buzz
happycodelucky
73
15 days ago
Diamonds
dokutan
345
18 days ago
Niven Numbers (Long)
fuzzylojik-golf
🥇
61
18 days ago
Niven Numbers
fuzzylojik-golf
🥇
45
18 days ago
Tutorial
Bpc-CPU
160
19 days ago
Star Wars GPT
MeWhenI
🥈
230
19 days ago
Mandelbrot
albanian-laundromat
🥉
190
20 days ago
Abundant Numbers
kaascevich
67
22 days ago
Card Number Validation
kaascevich
134
22 days ago
Evil Numbers (Long)
kaascevich
52
22 days ago
Odious Numbers (Long)
kaascevich
51
22 days ago
Odious Numbers
kaascevich
50
22 days ago
Leyland Numbers
kaascevich
137
22 days ago
Fractions
kaascevich
137
22 days ago
Tongue-twisters
JayXon
🥇
303
22 days ago
12 Days of Christmas
Mukundan314
🥈
467
22 days ago