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
Continued Fractions
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
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
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
ArkScript
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
APL
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
><>
ALGOL 68
ArkScript
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
APL
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
Continued Fractions
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
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
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Prime Numbers
Matter1024
42
10ms
9 mins ago
Rectangle Fill
hallvabo
183
13ms
18 mins ago
Catalan’s Constant
TheSecondComing123
145
25ms
59 mins ago
Set
tomh1012
190
39ms
3 hours ago
φ
kitotch
94
12ms
3 hours ago
Sierpiński Triangle
edsrzf
66
30ms
4 hours ago
Polyominoes
blaztoma
202
21ms
5 hours ago
ASCII Table
Languag3
112
10ms
7 hours ago
Fibonacci
plcc0
🥇
36
10ms
7 hours ago
Fizz Buzz
Languag3
🥇
58
10ms
12 hours ago
Transpose Sentence
jameswmccarty
138
12ms
13 hours ago
Niven Numbers
MeWhenI
🥇
44
9ms
13 hours ago
Partition Numbers
BrunoVisnadi
86
58ms
14 hours ago
Minesweeper
anter69
147
24ms
16 hours ago
p-adic Expansion
madex
236
12ms
17 hours ago
Apéry’s Constant
madex
166
53ms
17 hours ago
CSS Grid
madex
209
28ms
17 hours ago
Polygon Triangulations
madex
167
11ms
17 hours ago
Hexagonal Spiral
madex
477
11ms
17 hours ago
Turtle
madex
309
43ms
17 hours ago
Highly Composite Numbers
madex
165
20ms
17 hours ago
Connect Four
madex
234
47ms
17 hours ago
Quadratic Formula
madex
606
18ms
17 hours ago
NFA Simulator
madex
435
18ms
17 hours ago
Snake
madex
257
18ms
17 hours ago
Ellipse Perimeters
madex
102
10ms
17 hours ago
CSS Colors (Inverse)
madex
2,436
13ms
17 hours ago
Alphabetic Numbers
madex
380
19ms
17 hours ago
Sphenic Numbers
madex
109
38ms
17 hours ago
Taxicab Numbers
madex
109
40ms
17 hours ago
Smooth Numbers
madex
121
44ms
17 hours ago
Tutorial
madex
67
13ms
17 hours ago
Gray Code Encoder
madex
62
15ms
17 hours ago
Semiprime Numbers
madex
99
714ms
17 hours ago
N Queens
anter69
141
15ms
18 hours ago
Proximity Grid
madex
227
19ms
19 hours ago
Rectangle Fill
bizy-coder
146
34ms
19 hours ago
Tower of Hanoi
kmathis22
91
11ms
20 hours ago
Pernicious Numbers
Matter1024
53
10ms
20 hours ago
Fizz Buzz
Deppyforce
84
18ms
20 hours ago
Binary Lambda Calculus
plcc0
492
34ms
21 hours ago
Medal Tally
StefanHabel
168
13ms
22 hours ago
99 Bottles of Beer
noahdorsch
632
11ms
23 hours ago
Pascal’s Triangle
Program-Pi
66
11ms
23 hours ago
ASCII Table
carotinoid
129
10ms
23 hours ago
brainfuck
bzijlema
180
28ms
25 hours ago
Rectangle Fill
bricknellj
211
48ms
25 hours ago
Arrows
joll05
181
17ms
26 hours ago
Mahjong
kitotch
511
35ms
27 hours ago
Lucky Tickets
hallvabo
101
10ms
28 hours ago
Emojify
Deppyforce
372
11ms
29 hours ago
Fibonacci
Deppyforce
75
169ms
29 hours ago
Rectangle Fill
plcc0
172
19ms
29 hours ago
Gijswijt’s Sequence
emgordon154
85
11ms
31 hours ago
Prime Numbers
Herbert00709
42
10ms
32 hours ago
Cubes
blaztoma
192
10ms
32 hours ago
Diamonds
jusaka
191
11ms
32 hours ago
Collatz
jusaka
79
24ms
32 hours ago
Look and Say
jusaka
134
10ms
32 hours ago
Ordinal Numbers
jusaka
145
12ms
32 hours ago
Pernicious Numbers
jusaka
59
10ms
32 hours ago
Catalan Numbers
jusaka
67
10ms
32 hours ago
Emirp Numbers
jusaka
147
17ms
32 hours ago
Ascending Primes
jusaka
186
1,316ms
32 hours ago
Pangram Grep
jusaka
94
11ms
32 hours ago
Happy Numbers
jusaka
95
24ms
32 hours ago
Odious Numbers
jusaka
52
11ms
32 hours ago
Evil Numbers
jusaka
52
10ms
32 hours ago
Divisors
jusaka
63
10ms
32 hours ago
Christmas Trees
jusaka
103
10ms
32 hours ago
Leap Years
jusaka
66
10ms
32 hours ago
ASCII Table
jusaka
160
10ms
32 hours ago
Arrows
jusaka
507
11ms
32 hours ago
Arithmetic Numbers
jusaka
90
1,432ms
32 hours ago
Apéry’s Constant
jusaka
1,011
10ms
32 hours ago
Alphabetic Numbers
jusaka
438
12ms
32 hours ago
Abundant Numbers (Long)
jusaka
73
21ms
32 hours ago
99 Bottles of Beer
jusaka
387
10ms
32 hours ago
12 Days of Christmas
jusaka
523
10ms
32 hours ago
Abundant Numbers
jusaka
70
10ms
32 hours ago