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
π
jusaka
1,011
6ms
6 hours ago
τ
jusaka
1,011
4ms
6 hours ago
𝑒
jusaka
1,011
5ms
6 hours ago
φ
jusaka
1,011
4ms
6 hours ago
√2
jusaka
1,011
3ms
6 hours ago
λ
jusaka
1,011
3ms
6 hours ago
γ
jusaka
1,011
3ms
6 hours ago
Vampire Numbers
jusaka
1,233
3ms
6 hours ago
Taxicab Numbers
jusaka
4,652
4ms
6 hours ago
Rijndael S-box
jusaka
791
4ms
6 hours ago
Polygon Triangulations
jusaka
4,515
3ms
6 hours ago
Polyominoes
jusaka
4,837
12ms
6 hours ago
Partition Numbers
jusaka
754
3ms
6 hours ago
Odd Polyomino Tiling
jusaka
21,645
3ms
6 hours ago
N Queens
jusaka
1,401
4ms
6 hours ago
Mandelbrot
jusaka
10,052
3ms
6 hours ago
Leyland Numbers
jusaka
1,000
4ms
6 hours ago
ln 2
jusaka
1,011
3ms
6 hours ago
Kaprekar Numbers
jusaka
515
3ms
6 hours ago
Kolakoski Constant
jusaka
1,011
4ms
6 hours ago
Highly Composite Numbers
jusaka
460
6ms
6 hours ago
Hilbert Curve
jusaka
5,157
3ms
6 hours ago
Hexagonal Spiral
jusaka
1,377
3ms
6 hours ago
Gijswijt’s Sequence
jusaka
3,007
3ms
6 hours ago
Farey Sequence
jusaka
5,136
4ms
6 hours ago
Factorial Factorisation
jusaka
870
4ms
6 hours ago
Catalan’s Constant
jusaka
1,011
3ms
6 hours ago
Catalan Numbers
jusaka
2,979
6ms
6 hours ago
Alphabetic Numbers
jusaka
4,903
4ms
6 hours ago
Apéry’s Constant
jusaka
1,011
4ms
6 hours ago
24 Game
jusaka
13,801
3ms
6 hours ago
Trinomial Triangle
jusaka
444
4ms
11 hours ago
Ascending Primes
jusaka
364
5ms
11 hours ago
Transpose Sentence
jusaka
374
7ms
11 hours ago
United States
jusaka
1,028
4ms
11 hours ago
Maze
jusaka
1,098
12ms
11 hours ago
Lucky Tickets
jusaka
641
7ms
11 hours ago
Fractions
jusaka
290
3ms
11 hours ago
Medal Tally
jusaka
674
4ms
11 hours ago
Rule 110
jusaka
556
7ms
11 hours ago
Game of Life
jusaka
640
5ms
11 hours ago
Jacobi Symbol
jusaka
498
4ms
11 hours ago
Quine
jusaka
86
3ms
11 hours ago
Inventory Sequence
jusaka
376
4ms
11 hours ago
Time Distance
jusaka
630
4ms
11 hours ago
Number Spiral
jusaka
678
4ms
11 hours ago
Intersection
jusaka
569
5ms
11 hours ago
Spelling Numbers
jusaka
686
6ms
11 hours ago
ISBN
jusaka
300
4ms
11 hours ago
Tongue-twisters
jusaka
533
9ms
11 hours ago
Pangram Grep
jusaka
231
4ms
11 hours ago
brainfuck
jusaka
787
16ms
11 hours ago
Morse Encoder
jusaka
1,620
4ms
11 hours ago
Arithmetic Numbers
jusaka
182
1,626ms
11 hours ago
Sphenic Numbers
jusaka
518
16ms
11 hours ago
Smith Numbers
jusaka
421
14ms
11 hours ago
Lucky Numbers
jusaka
328
178ms
11 hours ago
Fizz Buzz
jusaka
164
3ms
11 hours ago
Semiprime Numbers
jusaka
381
22ms
11 hours ago
Card Number Validation
jusaka
325
5ms
11 hours ago
Seven Segment
jusaka
443
3ms
11 hours ago
Levenshtein Distance
jusaka
638
4ms
11 hours ago
Minesweeper
jusaka
746
18ms
11 hours ago
ASCII Table
jusaka
421
3ms
11 hours ago
Tower of Hanoi
jusaka
178
3ms
11 hours ago
Emirp Numbers (Long)
jusaka
358
9ms
11 hours ago
Kolakoski Sequence
jusaka
296
6ms
11 hours ago
Gray Code Encoder
jusaka
198
7ms
11 hours ago
Pernicious Numbers (Long)
jusaka
289
8ms
11 hours ago
Gray Code Decoder
jusaka
489
8ms
11 hours ago
Emirp Numbers
jusaka
357
4ms
11 hours ago
Pernicious Numbers
jusaka
286
5ms
11 hours ago
Odious Numbers (Long)
jusaka
152
4ms
11 hours ago
Happy Numbers (Long)
jusaka
297
10ms
11 hours ago
Prime Numbers (Long)
jusaka
172
8ms
11 hours ago
Evil Numbers (Long)
jusaka
152
3ms
11 hours ago
Niven Numbers (Long)
jusaka
149
5ms
11 hours ago
Reverse Polish Notation
jusaka
524
6ms
11 hours ago
Arrows
jusaka
714
5ms
11 hours ago
Cubes
jusaka
1,783
4ms
11 hours ago