Recent Solutions
Achievements
Cheevos
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
Calendar
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
Minesweeper
Morse Decoder
Morse Encoder
Multitap Input
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
Tower of Hanoi
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
Erlang
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
ArkScript
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
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
Erlang
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
ArkScript
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
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
Calendar
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
Minesweeper
Morse Decoder
Morse Encoder
Multitap Input
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
Tower of Hanoi
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Leyland Numbers
2bular
42
3ms
16 hours ago
Quine
bstrat
🥇
8
3ms
2 days ago
Tutorial
FortuiteMan
73
5ms
5 days ago
π
Andrey2001
1,013
3ms
6 days ago
Multitap Input
Natanaelel
🥉
62
4ms
6 days ago
Multitap Input
2bular
🥈
50
3ms
6 days ago
Maze
emgordon154
79
7ms
6 days ago
Multitap Input
dokutan
178
3ms
6 days ago
ASCII Table
blaztoma
86
3ms
7 days ago
Multitap Input
blaztoma
63
3ms
7 days ago
Kolakoski Sequence
CornerMercury
🥇
15
3ms
7 days ago
Number Spiral
blaztoma
37
2ms
8 days ago
Jacobi Symbol
2bular
🥉
62
4ms
9 days ago
Number Spiral
CornerMercury
65
2ms
10 days ago
Fizz Buzz
bstrat
43
3ms
11 days ago
Multitap Input
ovs-code
💎
47
3ms
12 days ago
Tutorial
Mefred
31
5ms
16 days ago
Happy Numbers (Long)
2bular
💎
25
2ms
17 days ago
Happy Numbers
CornerMercury
29
3ms
18 days ago
Happy Numbers (Long)
CornerMercury
30
5ms
18 days ago
Fractions
CornerMercury
42
3ms
20 days ago
Tutorial
Roachbones
73
3ms
23 days ago
Pangram Grep
plcc0
26
3ms
26 days ago
Scrambled Sort
plcc0
31
3ms
26 days ago
Gray Code Decoder
GolfingSuccess
13
4ms
27 days ago
Kaprekar Numbers
2bular
🥉
41
1,435ms
9 Jan 2026
Kaprekar Numbers
KatieLG-Transpiler
511
3ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
456
3ms
9 Jan 2026
Calendar
SirBogman
🥉
129
3ms
8 Jan 2026
Smooth Numbers
GolfingSuccess
31
357ms
7 Jan 2026
Maze
2bular
62
15ms
7 Jan 2026
Pernicious Numbers
CornerMercury
31
2ms
6 Jan 2026
Pascal’s Triangle
CornerMercury
21
3ms
5 Jan 2026
Evil Numbers (Long)
CornerMercury
🥇
14
3ms
5 Jan 2026
Evil Numbers
CornerMercury
🥇
12
2ms
5 Jan 2026
Odious Numbers (Long)
CornerMercury
🥇
14
2ms
5 Jan 2026
Odious Numbers
CornerMercury
🥇
13
2ms
5 Jan 2026
Prime Numbers (Long)
ndren
🥇
13
2ms
5 Jan 2026
Prime Numbers
ndren
🥇
11
2ms
5 Jan 2026
Smith Numbers
2bular
🥉
50
1,787ms
30 Dec 2025
Fractions
blaztoma
42
2ms
27 Dec 2025
Lucky Tickets
2bular
🥇
26
22ms
25 Dec 2025
Lucky Tickets
MeWhenI
2,201
3ms
21 Dec 2025
Gray Code Encoder
GolfingSuccess
18
6ms
13 Dec 2025
Card Number Validation
emgordon154
49
3ms
9 Dec 2025
12 Days of Christmas
2bular
398
2ms
9 Dec 2025
Fibonacci
CornerMercury
17
2ms
9 Dec 2025
Niven Numbers (Long)
CornerMercury
26
3ms
8 Dec 2025
Niven Numbers
CornerMercury
24
2ms
8 Dec 2025
Prime Numbers (Long)
CornerMercury
🥇
13
3ms
8 Dec 2025
Prime Numbers
CornerMercury
🥇
11
2ms
8 Dec 2025
Intersection
2bular
🥈
28
2ms
7 Dec 2025
Tongue-twisters
prestosilver
592
7ms
3 Dec 2025
π
Carlos-EAC
1,013
2ms
3 Dec 2025
Tower of Hanoi
SirBogman
59
5ms
2 Dec 2025
Mahjong
blaztoma
🥉
341
12ms
2 Dec 2025
Niven Numbers
AdrienHache
29
3ms
2 Dec 2025
Fibonacci
AdrienHache
20
4ms
2 Dec 2025
Pernicious Numbers (Long)
AdrienHache
🥇
24
6ms
2 Dec 2025
Tower of Hanoi
CaedenHarper
3,623
6ms
1 Dec 2025
Tower of Hanoi
dokutan
148
3ms
1 Dec 2025
Pernicious Numbers
AdrienHache
18
4ms
1 Dec 2025
Odious Numbers (Long)
AdrienHache
🥇
14
6ms
1 Dec 2025
Odious Numbers
AdrienHache
🥇
13
4ms
1 Dec 2025
Evil Numbers (Long)
AdrienHache
🥇
14
4ms
1 Dec 2025
Evil Numbers
AdrienHache
🥇
12
3ms
1 Dec 2025
Tutorial
AdrienHache
29
4ms
30 Nov 2025
Tower of Hanoi
zacjl
🥇
33
3ms
30 Nov 2025
Tower of Hanoi
KatieLG
4,119
2ms
30 Nov 2025
Tower of Hanoi
HumanoidCPU
3,616
3ms
28 Nov 2025
Taxicab Numbers
HumanoidCPU
4,204
3ms
28 Nov 2025
Taxicab Numbers
Natanaelel
45
6ms
27 Nov 2025
Arithmetic Numbers
emgordon154
41
3,531ms
26 Nov 2025
Taxicab Numbers
2bular
34
48ms
26 Nov 2025
Taxicab Numbers
ovs-code
31
42ms
26 Nov 2025
π
AidanWalter
1,103
3ms
26 Nov 2025
Fibonacci
emgordon154
🥇
13
3ms
26 Nov 2025
Highly Composite Numbers
2bular
52
24ms
24 Nov 2025
Highly Composite Numbers
ovs-code
49
26ms
23 Nov 2025
Sphenic Numbers
2bular
32
195ms
23 Nov 2025