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
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
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
Calendar
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
Multitap Input
NFA Simulator
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
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
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
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
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
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
Minesweeper
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
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
Calendar
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
Multitap Input
NFA Simulator
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
Bytes
Time
Submitted
Quine
CornerMercury
🥉
259
5ms
26 hours ago
12 Days of Christmas
snoozingnewt
5,417
6ms
2 days ago
Niven Numbers
snoozingnewt
215
4ms
2 days ago
Emirp Numbers
snoozingnewt
247
4ms
2 days ago
Happy Numbers
snoozingnewt
218
4ms
2 days ago
Pernicious Numbers
snoozingnewt
238
4ms
2 days ago
Prime Numbers (Long)
snoozingnewt
526
1,397ms
2 days ago
Prime Numbers
snoozingnewt
503
17ms
2 days ago
Fibonacci
snoozingnewt
229
4ms
2 days ago
Emojify
snoozingnewt
862
8ms
2 days ago
Divisors
snoozingnewt
690
63ms
2 days ago
99 Bottles of Beer
snoozingnewt
2,083
22ms
2 days ago
Happy Numbers
FortuiteMan
173
40ms
3 days ago
Happy Numbers (Long)
FortuiteMan
🥉
173
177ms
3 days ago
Tower of Hanoi
Jacob385
10,921
7ms
4 days ago
Roman to Arabic
FortuiteMan
🥈
148
102ms
4 days ago
Fizz Buzz
JOrE20
91
5ms
4 days ago
Quine
FortuiteMan
261
5ms
5 days ago
Foo Fizz Buzz Bar
FortuiteMan
🥉
265
16ms
5 days ago
Tower of Hanoi
KatieLG
12,871
9ms
8 days ago
Lucky Tickets
FortuiteMan
🥈
166
37ms
8 days ago
Scrambled Sort
MeWhenI
🦄
470
127ms
9 days ago
Tutorial
TheZwierzLF
289
5ms
9 days ago
Tower of Hanoi
CaedenHarper
🥈
494
22ms
9 days ago
Tower of Hanoi
dokutan
🥉
9,032
8ms
10 days ago
γ
MeWhenI
💎
127
212ms
11 days ago
γ
FortuiteMan
🥈
497
37ms
12 days ago
Topological Sort
MeWhenI
💎
332
125ms
13 days ago
Fibonacci
FortuiteMan
27
4ms
14 days ago
Minesweeper
MeWhenI
💎
251
683ms
14 days ago
𝑒
MeWhenI
💎
56
7ms
15 days ago
√2
MeWhenI
💎
83
3,055ms
15 days ago
Tower of Hanoi
MeWhenI
💎
76
11ms
15 days ago
99 Bottles of Beer
FortuiteMan
🥉
706
15ms
16 days ago
Christmas Trees
FortuiteMan
🥈
109
5ms
16 days ago
Card Number Validation
FortuiteMan
🥈
272
37ms
16 days ago
Tutorial
JOrE20
63
7ms
20 days ago
Set
MeWhenI
💎
828
2,674ms
20 days ago
24 Game
FortuiteMan
🥈
1,690
20ms
22 days ago
brainfuck
FortuiteMan
🥉
919
214ms
22 days ago
Quine
JOrE20
🥉
259
5ms
25 days ago
√2
FortuiteMan
🥈
85
195ms
26 days ago
𝑒
FortuiteMan
🥈
62
8ms
26 days ago
Prime Numbers (Long)
FortuiteMan
🥈
50
194ms
26 days ago
Prime Numbers
FortuiteMan
🥉
48
4ms
26 days ago
Minesweeper
CaedenHarper
🥈
4,437
1,596ms
27 days ago
Fractions
CaedenHarper
🥉
654
12ms
27 days ago
Zeckendorf Representation
CaedenHarper
🥈
724
146ms
27 days ago
Foo Fizz Buzz Bar
CaedenHarper
802
39ms
27 days ago
Ordinal Numbers
CaedenHarper
680
37ms
27 days ago
Arrows
CaedenHarper
12,146
28ms
11 Nov 2025
Prime Numbers (Long)
CaedenHarper
287
171ms
11 Nov 2025
Prime Numbers
CaedenHarper
285
5ms
11 Nov 2025
Hexdump
CaedenHarper
26,165
915ms
10 Nov 2025
ROT13
CaedenHarper
🥉
628
128ms
10 Nov 2025
Fibonacci
CaedenHarper
229
4ms
10 Nov 2025
Emojify
CaedenHarper
862
7ms
10 Nov 2025
Divisors
CaedenHarper
690
64ms
10 Nov 2025
99 Bottles of Beer
CaedenHarper
2,083
22ms
10 Nov 2025
Ascending Primes
FortuiteMan
🥈
318
2,552ms
9 Nov 2025
Arrows
FortuiteMan
🥉
534
5ms
9 Nov 2025
Hilbert Curve
MeWhenI
💎
3,745
858ms
8 Nov 2025
Quine
RYSF13
261
4ms
7 Nov 2025
Trinomial Triangle
MeWhenI
💎
81
6ms
7 Nov 2025
Quine
gigaprofisi
261
4ms
5 Nov 2025
Fizz Buzz
Babafaba
112
5ms
4 Nov 2025
Inventory Sequence
Jacob385
7,757
6ms
30 Oct 2025
Tutorial
Openstreetmapler
650
5ms
30 Oct 2025
Arabic to Roman
FortuiteMan
🥉
215
120ms
30 Oct 2025
Topological Sort
aiwana
🥈
469
387ms
25 Oct 2025
Zodiac Signs
FortuiteMan
🥈
276
15ms
19 Oct 2025
Tutorial
luuumine
650
5ms
16 Oct 2025
Tutorial
Babafaba
650
5ms
15 Oct 2025
Trinomial Triangle
dokutan
🥈
2,945
5ms
6 Oct 2025
Odious Numbers (Long)
FortuiteMan
🥉
168
22ms
5 Oct 2025