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
Tutorial
retrohun
73
2 days ago
Set
2bular
43
2 days ago
Set
ovs-code
🥇
36
2 days ago
Prime Numbers (Long)
plcc0
🥇
13
4 days ago
Fibonacci
plcc0
14
4 days ago
Tutorial
plcc0
30
4 days ago
Prime Numbers
plcc0
🥇
11
4 days ago
Set
zacjl
🥇
36
6 days ago
Set
SirBogman
44
8 days ago
PalindromemordnilaP
GolfingSuccess
29
9 days ago
Gray Code Encoder
GolfingSuccess
24
10 days ago
ASCII Table
zacjl
🥇
71
12 days ago
Christmas Trees
2bular
🥈
35
13 days ago
Hexdump
GolfingSuccess
98
13 days ago
ROT13
GolfingSuccess
26
14 days ago
Collatz
GolfingSuccess
36
14 days ago
Inventory Sequence
GolfingSuccess
🥇
21
14 days ago
Fibonacci
GolfingSuccess
🥇
13
15 days ago
Niven Numbers
GolfingSuccess
22
15 days ago
Happy Numbers
GolfingSuccess
🥇
25
15 days ago
Happy Numbers (Long)
GolfingSuccess
🥇
26
15 days ago
Pangram Grep
GolfingSuccess
🥇
21
15 days ago
Set
GolfingSuccess
🥉
37
16 days ago
Cubes
retrohun
4,269
17 days ago
𝑒
retrohun
1,010
17 days ago
√2
retrohun
1,010
17 days ago
φ
retrohun
1,010
17 days ago
τ
retrohun
1,010
17 days ago
π
retrohun
1,010
17 days ago
λ
retrohun
1,010
17 days ago
Kolakoski Sequence
retrohun
2,013
17 days ago
Kolakoski Constant
retrohun
1,010
17 days ago
Catalan’s Constant
retrohun
1,010
17 days ago
Divisors
2bular
🥇
21
17 days ago
Christmas Trees
zacjl
39
17 days ago
Tutorial
targrik
31
20 days ago
ISBN
zacjl
32
20 days ago
π
Mabeloid
1,010
20 days ago
Lucky Numbers
copy
35
21 days ago
Foo Fizz Buzz Bar
zacjl
🥇
49
22 days ago
Hilbert Curve
ovs-code
138
23 days ago
Partition Numbers
2bular
31
24 days ago
Van Eck Sequence
retrohun
2,584
25 days ago
Vampire Numbers
retrohun
1,085
25 days ago
Tongue-twisters
retrohun
532
25 days ago
Smith Numbers
retrohun
1,843
25 days ago
Sierpiński Triangle
retrohun
563
25 days ago
Rule 110
retrohun
16,351
25 days ago
Recamán
retrohun
906
25 days ago
Prime Numbers (Long)
retrohun
6,007
25 days ago
Pernicious Numbers (Long)
retrohun
20,866
25 days ago
Pascal’s Triangle
retrohun
778
25 days ago
Odious Numbers (Long)
retrohun
1,964
25 days ago
Niven Numbers (Long)
retrohun
7,512
25 days ago
Lucky Numbers
retrohun
4,869
25 days ago
Look and Say
retrohun
1,298
25 days ago
Leyland Numbers
retrohun
895
25 days ago
Leap Years
retrohun
739
25 days ago
Inventory Sequence
retrohun
2,652
25 days ago
Happy Numbers (Long)
retrohun
561
25 days ago
Foo Fizz Buzz Bar
retrohun
5,778
25 days ago
Evil Numbers (Long)
retrohun
1,969
25 days ago
Emirp Numbers (Long)
retrohun
1,170
25 days ago
Divisors
retrohun
1,180
25 days ago
Diamonds
retrohun
1,122
25 days ago
Collatz
retrohun
3,260
25 days ago
Christmas Trees
retrohun
554
25 days ago
Catalan Numbers
retrohun
2,901
25 days ago
Abundant Numbers (Long)
retrohun
973
25 days ago
99 Bottles of Beer
retrohun
12,009
25 days ago
12 Days of Christmas
retrohun
2,398
25 days ago
Partition Numbers
Natanaelel
🥇
25
27 days ago
Partition Numbers
KatieLG
754
6 Mar 2025
Tutorial
paulmr
30
5 Mar 2025
Partition Numbers
zacjl
🥇
25
4 Mar 2025