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
Gray Code Decoder
Gray Code Encoder
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
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
Gray Code Decoder
Gray Code Encoder
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
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
Mandelbrot
jusaka
10,347
44ms
4 hours ago
Polyominoes
jusaka
13,721
172ms
4 hours ago
24 Game
jusaka
23,328
209ms
4 hours ago
Reverse Polish Notation
jusaka
691
44ms
5 hours ago
Levenshtein Distance
jusaka
610
45ms
5 hours ago
Arrows
jusaka
480
48ms
5 hours ago
Jacobi Symbol
jusaka
630
44ms
5 hours ago
Lucky Tickets
jusaka
674
43ms
5 hours ago
Intersection
jusaka
365
49ms
5 hours ago
Morse Encoder
jusaka
940
51ms
6 hours ago
Rock-paper-scissors-Spock-lizard
jusaka
1,059
44ms
6 hours ago
Proximity Grid
jusaka
1,451
49ms
6 hours ago
Scrambled Sort
jusaka
🥉
891
46ms
6 hours ago
Morse Decoder
jusaka
1,138
42ms
7 hours ago
Repeating Decimals
jusaka
766
46ms
7 hours ago
Topological Sort
jusaka
🥈
625
46ms
7 hours ago
Hexdump
jusaka
467
49ms
8 hours ago
Mahjong
jusaka
🥉
1,140
45ms
8 hours ago
Sudoku (Fill-in)
jusaka
1,433
52ms
8 hours ago
Emojify
jusaka
579
46ms
8 hours ago
Billiards
jusaka
🥉
599
43ms
8 hours ago
CSS Colors
jusaka
5,692
67ms
9 hours ago
Forsyth–Edwards Notation
jusaka
869
44ms
9 hours ago
Medal Tally
jusaka
635
49ms
9 hours ago
brainfuck
jusaka
936
46ms
9 hours ago
Maze
jusaka
1,174
52ms
9 hours ago
Star Wars GPT
jusaka
🥈
1,870
53ms
10 hours ago
Sudoku
jusaka
1,669
46ms
10 hours ago
QR Decoder
jusaka
🥉
336
40ms
11 hours ago
Zodiac Signs
jusaka
758
52ms
20 hours ago
Turtle
jusaka
993
54ms
20 hours ago
Spelling Numbers
jusaka
952
51ms
20 hours ago
Snake
jusaka
744
62ms
20 hours ago
Connect Four
jusaka
892
102ms
20 hours ago
Multitap Input
jusaka
🥉
406
46ms
20 hours ago
United States
jusaka
1,024
42ms
20 hours ago
Tongue-twisters
jusaka
575
43ms
20 hours ago
Tic-tac-toe
jusaka
🥉
476
48ms
20 hours ago
Hexagonal Spiral
jusaka
1,424
45ms
20 hours ago
Minesweeper
jusaka
🥉
555
48ms
20 hours ago
Continued Fractions
jusaka
362
46ms
20 hours ago
Calendar
jusaka
🥉
577
50ms
20 hours ago
Game of Life
jusaka
605
46ms
20 hours ago
Rectangle Fill
jusaka
776
56ms
20 hours ago
Rule 110
jusaka
302
48ms
21 hours ago
Zeckendorf Representation
jusaka
279
45ms
21 hours ago
Factorial Factorisation
jusaka
280
44ms
21 hours ago
Pangram Grep
jusaka
243
51ms
21 hours ago
Time Distance
jusaka
450
46ms
21 hours ago
Tower of Hanoi
jusaka
263
44ms
21 hours ago
Transpose Sentence
jusaka
348
47ms
21 hours ago
Card Number Validation
jusaka
258
43ms
21 hours ago
Seven Segment
jusaka
454
44ms
21 hours ago
ISBN
jusaka
249
47ms
21 hours ago
Day of Week
jusaka
300
46ms
21 hours ago
Fractions
jusaka
312
43ms
21 hours ago
PalindromemordnilaP
jusaka
263
45ms
21 hours ago
Christmas Trees
jusaka
125
45ms
21 hours ago
ASCII Table
jusaka
160
43ms
21 hours ago
Roman to Arabic
jusaka
285
49ms
21 hours ago
Arabic to Roman
jusaka
247
50ms
21 hours ago
Gray Code Decoder
jusaka
205
46ms
21 hours ago
Gray Code Encoder
jusaka
86
46ms
21 hours ago
99 Bottles of Beer
jusaka
454
45ms
21 hours ago
Ordinal Numbers
jusaka
240
46ms
21 hours ago
ROT13
jusaka
201
48ms
21 hours ago
Tutorial
jusaka
93
42ms
21 hours ago
𝑒
albanian-laundromat
140
87ms
23 hours ago
Hexagonal Spiral
bitsandbeyond
450
47ms
24 hours ago
π
albanian-laundromat
188
88ms
29 hours ago
Sierpiński Triangle
jusaka
681
42ms
30 hours ago
Number Spiral
jusaka
379
40ms
30 hours ago
Niven Numbers (Long)
jusaka
19,741
220ms
30 hours ago
Hilbert Curve
jusaka
5,373
41ms
30 hours ago
Foo Fizz Buzz Bar
jusaka
13,718
129ms
30 hours ago
Diamonds
jusaka
1,814
48ms
31 hours ago
Cubes
jusaka
4,988
49ms
31 hours ago
24 Game
kasarino
16,517
192ms
2 days ago
Recamán
kasarino
125
41ms
2 days ago
Arithmetic Numbers
kasarino
123
120ms
2 days ago