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
Chars
Time
Submitted
Scrambled Sort
AlexKent3141
🥉
216
2ms
2 mins ago
Billiards
jusaka
424
2ms
7 mins ago
Emojify
jusaka
521
3ms
10 mins ago
Calendar
jusaka
556
4ms
13 mins ago
Reversi
jusaka
604
3ms
28 mins ago
Look and Say
roupiq
110
3ms
29 mins ago
CSS Colors
jusaka
3,990
3ms
29 mins ago
Forsyth–Edwards Notation
jusaka
689
3ms
45 mins ago
brainfuck
jusaka
683
3ms
52 mins ago
Medal Tally
jusaka
529
3ms
57 mins ago
Musical Chords
jusaka
813
3ms
63 mins ago
Sudoku (Fill-in)
jusaka
822
3ms
69 mins ago
Maze
jusaka
923
3ms
79 mins ago
Set
jusaka
419
3ms
80 mins ago
SI Units
jusaka
1,844
4ms
94 mins ago
Pernicious Numbers (Long)
emplv
61
4ms
98 mins ago
Star Wars Opening Crawl
jusaka
1,063
4ms
107 mins ago
Star Wars GPT
jusaka
939
3ms
110 mins ago
Sudoku
jusaka
768
2ms
111 mins ago
Look and Say
Herbert00709
95
2ms
2 hours ago
Mahjong
jusaka
752
2ms
2 hours ago
QR Decoder
jusaka
229
2ms
2 hours ago
Quine
jusaka
127
2ms
3 hours ago
Tongue-twisters
jusaka
583
2ms
8 hours ago
Polyominoes
jusaka
4,876
2ms
8 hours ago
Odd Polyomino Tiling
jusaka
21,684
3ms
9 hours ago
Seven Segment
MostParsingVex
138
2ms
9 hours ago
Hexagonal Spiral
jusaka
1,416
2ms
9 hours ago
24 Game
jusaka
13,840
2ms
9 hours ago
Fizz Buzz
ComradeSquirrel
117
83ms
13 hours ago
Foo Fizz Buzz Bar
ComradeSquirrel
154
64ms
13 hours ago
Hexagonal Spiral
bitsandbeyond
250
3ms
16 hours ago
Time Distance
jusaka
467
3ms
18 hours ago
Tic-tac-toe
jusaka
468
3ms
18 hours ago
Ten-pin Bowling
jusaka
733
3ms
18 hours ago
Mandelbrot
jusaka
277
10ms
18 hours ago
Zodiac Signs
jusaka
591
3ms
18 hours ago
Rock-paper-scissors-Spock-lizard
jusaka
968
3ms
18 hours ago
Intersection
jusaka
354
2ms
18 hours ago
Proximity Grid
jusaka
886
3ms
18 hours ago
Lucky Tickets
jusaka
496
2ms
18 hours ago
Transpose Sentence
jusaka
343
4ms
18 hours ago
Fractions
jusaka
258
2ms
18 hours ago
Levenshtein Distance
jusaka
433
3ms
18 hours ago
Seven Segment
jusaka
391
2ms
18 hours ago
Game of Life
jusaka
568
3ms
18 hours ago
Card Number Validation
jusaka
271
3ms
18 hours ago
ISBN
jusaka
250
2ms
18 hours ago
Reverse Polish Notation
jusaka
500
3ms
18 hours ago
Tower of Hanoi
jusaka
145
3ms
18 hours ago
Rule 110
jusaka
286
7ms
18 hours ago
Minesweeper
jusaka
609
8ms
18 hours ago
Zeckendorf Representation
jusaka
321
3ms
18 hours ago
Day of Week
jusaka
311
3ms
18 hours ago
Arithmetic Numbers
jusaka
170
7ms
18 hours ago
ASCII Table
jusaka
228
3ms
18 hours ago
Arrows
jusaka
591
3ms
18 hours ago
Smooth Numbers
jusaka
262
7ms
18 hours ago
Pernicious Numbers (Long)
jusaka
227
4ms
18 hours ago
Sphenic Numbers
jusaka
243
3ms
18 hours ago
Semiprime Numbers
jusaka
252
4ms
18 hours ago
Jacobi Symbol
jusaka
356
2ms
18 hours ago
PalindromemordnilaP
jusaka
316
2ms
18 hours ago
Pangram Grep
jusaka
188
2ms
18 hours ago
Gray Code Decoder
jusaka
170
4ms
18 hours ago
Gray Code Encoder
jusaka
246
13ms
18 hours ago
Christmas Trees
jusaka
227
2ms
18 hours ago
Roman to Arabic
jusaka
379
4ms
18 hours ago
Arabic to Roman
jusaka
318
12ms
18 hours ago
Ordinal Numbers
jusaka
235
3ms
18 hours ago
99 Bottles of Beer
jusaka
605
2ms
18 hours ago
ROT13
jusaka
226
5ms
18 hours ago
Tutorial
jusaka
139
3ms
18 hours ago
Collatz
zgialor-lab
87
3ms
19 hours ago
Fizz Buzz
jusaka
552
2ms
21 hours ago
Sierpiński Triangle
jusaka
447
2ms
22 hours ago
Number Spiral
jusaka
349
2ms
22 hours ago
Niven Numbers (Long)
jusaka
9,015
2ms
22 hours ago
Hilbert Curve
jusaka
2,119
2ms
22 hours ago
Foo Fizz Buzz Bar
jusaka
6,758
2ms
22 hours ago