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
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
Multitap Input
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
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
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
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
Multitap Input
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
Rule 110
amazingalek
10,118
384ms
17 mins ago
Hilbert Curve
kg583
💎
316
42ms
21 mins ago
Christmas Trees
snoozingnewt
769
2ms
28 mins ago
Christmas Trees
snoozingnewt
104
107ms
29 mins ago
Christmas Trees
Andriamanitra
68
1,250ms
30 mins ago
Christmas Trees
snoozingnewt
67
34ms
33 mins ago
Maze
kg583
💎
106
10ms
34 mins ago
Christmas Trees
snoozingnewt
68
1,210ms
35 mins ago
United States
isaiah0311
794
2ms
35 mins ago
Diamonds
ryyyn
74
10ms
44 mins ago
Collatz
CaedenHarper
56
381ms
2 hours ago
Abundant Numbers (Long)
isaiah0311
85
3ms
2 hours ago
Leap Years
isaiah0311
74
2ms
2 hours ago
Prime Numbers (Long)
isaiah0311
81
66ms
2 hours ago
Prime Numbers
isaiah0311
79
2ms
2 hours ago
Fibonacci
isaiah0311
59
2ms
2 hours ago
Abundant Numbers
isaiah0311
84
2ms
2 hours ago
N Queens
kg583
🥈
105
17ms
2 hours ago
Happy Numbers (Long)
kg583
🥉
80
11ms
2 hours ago
Vampire Numbers
randolchance
177
270ms
2 hours ago
Tutorial
klixel
76
357ms
3 hours ago
Fibonacci
albanian-laundromat
71
2ms
3 hours ago
Foo Fizz Buzz Bar
isaiah0311
156
3ms
3 hours ago
Fizz Buzz
isaiah0311
102
2ms
3 hours ago
Christmas Trees
edsrzf
89
103ms
3 hours ago
Christmas Trees
DialFrost
61
1,241ms
4 hours ago
Christmas Trees
edsrzf
58
1,250ms
4 hours ago
Smooth Numbers
GolfingSuccess
118
231ms
5 hours ago
Smooth Numbers
GolfingSuccess
125
806ms
5 hours ago
Gray Code Decoder
GolfingSuccess
27
31ms
5 hours ago
Christmas Trees
GolfingSuccess
551
1,288ms
5 hours ago
Divisors
albanian-laundromat
51
1,304ms
5 hours ago
Christmas Trees
albanian-laundromat
63
1,189ms
5 hours ago
Christmas Trees
AlephSquirrel
110
106ms
5 hours ago
Calendar
edsrzf
🦄
352
10ms
6 hours ago
Odious Numbers (Long)
albanian-laundromat
194
12ms
6 hours ago
Evil Numbers (Long)
albanian-laundromat
188
12ms
6 hours ago
Catalan Numbers
albanian-laundromat
🥈
555
23ms
6 hours ago
Farey Sequence
jameswmccarty
195
17ms
6 hours ago
Factorial Factorisation
kg583
💎
110
11ms
7 hours ago
Medal Tally
commandz0
61
8ms
7 hours ago
Day of Week
kg583
🥇
115
7ms
7 hours ago
Tongue-twisters
solisolu
340
10ms
7 hours ago
Kolakoski Constant
CommandLeo
100
34ms
7 hours ago
Calendar
AlephSquirrel
🦄
370
5ms
8 hours ago
Calendar
edsrzf
🦄
237
132ms
8 hours ago
Multitap Input
bitsandbeyond
126
7ms
8 hours ago
Happy Numbers
2bular
🥉
29
33ms
8 hours ago
Levenshtein Distance
Andrey2001
263
10ms
8 hours ago
Rock-paper-scissors-Spock-lizard
Andrey2001
750
10ms
8 hours ago
Happy Numbers (Long)
2bular
🥇
31
33ms
8 hours ago
N Queens
Andrey2001
185
40ms
8 hours ago
Scrambled Sort
amazingalek
269
431ms
9 hours ago
Fractions
FortuiteMan
93
16ms
9 hours ago
Smith Numbers
blaztoma
95
1,240ms
9 hours ago
Calendar
evnu
🥈
323
104ms
10 hours ago
Fizz Buzz
vhoulbreque
100
5ms
11 hours ago
Fibonacci
Lv0Sys
27
96ms
11 hours ago
Mandelbrot
amazingalek
335
407ms
11 hours ago
Fizz Buzz
vhoulbreque
117
357ms
11 hours ago
Kaprekar Numbers
amazingalek
225
4,998ms
11 hours ago
Fibonacci
evnu
75
2ms
11 hours ago
Emojify
amazingalek
333
460ms
11 hours ago
Kaprekar Numbers
blaztoma
85
738ms
11 hours ago
Trinomial Triangle
amazingalek
2,085
373ms
11 hours ago
Hilbert Curve
Andrey2001
822
11ms
11 hours ago
Medal Tally
amazingalek
250
442ms
11 hours ago
Maze
firegene
280
13ms
12 hours ago
Minesweeper
darrenks
446
35ms
12 hours ago
𝑒
bac0id
1,011
2ms
12 hours ago
√2
bac0id
1,011
2ms
12 hours ago
φ
bac0id
1,011
2ms
12 hours ago
τ
bac0id
1,011
2ms
12 hours ago
π
bac0id
1,011
2ms
12 hours ago
λ
bac0id
1,011
2ms
12 hours ago
γ
bac0id
1,011
2ms
12 hours ago
ln 2
bac0id
1,011
2ms
12 hours ago
Kolakoski Constant
bac0id
1,011
2ms
12 hours ago
Factorial Factorisation
bac0id
870
2ms
12 hours ago
Catalan’s Constant
bac0id
1,011
2ms
12 hours ago