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
Fibonacci
Mefred
152
53ms
12 hours ago
Multitap Input
lyphyser
🥈
49
55ms
14 hours ago
λ
roelderickx
1,036
52ms
37 hours ago
Fractions
osNiko
147
59ms
2 days ago
Alphabetic Numbers
Shanethegamer
3,916
60ms
2 days ago
Tic-tac-toe
osNiko
261
61ms
2 days ago
Reverse Polish Notation
osNiko
128
55ms
3 days ago
Proximity Grid
jusaka
🥉
740
60ms
5 days ago
Minesweeper
jusaka
🥉
365
59ms
5 days ago
Lucky Tickets
jusaka
331
60ms
5 days ago
Hexdump
jusaka
443
61ms
5 days ago
Morse Decoder
jusaka
446
68ms
5 days ago
United States
jusaka
316
55ms
5 days ago
Tic-tac-toe
jusaka
311
60ms
5 days ago
Transpose Sentence
jusaka
239
58ms
5 days ago
Topological Sort
jusaka
🥉
406
62ms
5 days ago
Zodiac Signs
jusaka
567
62ms
5 days ago
Time Distance
jusaka
807
62ms
5 days ago
PalindromemordnilaP
jusaka
184
59ms
5 days ago
Day of Week
jusaka
529
62ms
5 days ago
Odd Polyomino Tiling
jusaka
29,507
97ms
5 days ago
99 Bottles of Beer
jusaka
16,384
88ms
5 days ago
24 Game
jusaka
17,132
93ms
5 days ago
Mandelbrot
jusaka
13,799
80ms
5 days ago
Tower of Hanoi
jusaka
4,955
67ms
5 days ago
Polyominoes
jusaka
4,944
70ms
5 days ago
Tongue-twisters
jusaka
764
58ms
5 days ago
Hexagonal Spiral
jusaka
1,600
59ms
5 days ago
Prime Numbers (Long)
jusaka
134
58ms
6 days ago
Diamonds
jusaka
443
66ms
6 days ago
Smith Numbers
jusaka
267
89ms
6 days ago
Divisors
jusaka
174
67ms
6 days ago
Pascal’s Triangle
jusaka
595
63ms
6 days ago
Leap Years
jusaka
159
59ms
6 days ago
φ
jusaka
1,025
58ms
6 days ago
τ
jusaka
1,025
59ms
6 days ago
π
jusaka
1,025
61ms
6 days ago
√2
jusaka
1,025
57ms
6 days ago
Catalan’s Constant
jusaka
1,025
57ms
6 days ago
Abundant Numbers
jusaka
143
57ms
6 days ago
Fibonacci
jusaka
132
59ms
6 days ago
Fizz Buzz
jusaka
266
60ms
6 days ago
Collatz
jusaka
158
57ms
6 days ago
Intersection
jusaka
284
60ms
6 days ago
Rule 110
jusaka
458
65ms
6 days ago
Zeckendorf Representation
jusaka
657
60ms
6 days ago
Card Number Validation
jusaka
163
63ms
6 days ago
ISBN
jusaka
192
58ms
6 days ago
Fractions
jusaka
446
53ms
6 days ago
Jacobi Symbol
jusaka
356
57ms
6 days ago
Ordinal Numbers
jusaka
246
73ms
6 days ago
Seven Segment
jusaka
242
53ms
6 days ago
Christmas Trees
jusaka
247
63ms
6 days ago
Arabic to Roman
jusaka
590
76ms
6 days ago
Roman to Arabic
jusaka
236
70ms
6 days ago
ASCII Table
jusaka
286
64ms
6 days ago
Pangram Grep
jusaka
117
53ms
6 days ago
Arithmetic Numbers
jusaka
188
71ms
6 days ago
Smooth Numbers
jusaka
255
79ms
6 days ago
Pernicious Numbers (Long)
jusaka
171
65ms
6 days ago
Sphenic Numbers
jusaka
215
59ms
6 days ago
Semiprime Numbers
jusaka
212
59ms
6 days ago
Gray Code Decoder
jusaka
🥉
155
65ms
6 days ago
Gray Code Encoder
jusaka
🥉
153
67ms
6 days ago
ROT13
jusaka
100
57ms
6 days ago
Tutorial
jusaka
123
72ms
6 days ago
Sierpiński Triangle
jusaka
584
53ms
6 days ago
Number Spiral
jusaka
330
52ms
6 days ago
Niven Numbers (Long)
jusaka
7,468
59ms
6 days ago
Hilbert Curve
jusaka
5,148
50ms
6 days ago
Foo Fizz Buzz Bar
jusaka
5,749
56ms
6 days ago
Factorial Factorisation
jusaka
892
48ms
6 days ago
Cubes
jusaka
4,131
49ms
6 days ago
Fibonacci
roupiq
51
49ms
6 days ago
Fizz Buzz
Herbert00709
77
52ms
6 days ago
Fizz Buzz
roupiq
83
54ms
6 days ago
Fizz Buzz
gaving-quadprep
134
51ms
9 days ago
Evil Numbers
gaving-quadprep
66
49ms
9 days ago
Odious Numbers
gaving-quadprep
66
58ms
9 days ago
Tower of Hanoi
scpchicken
137
56ms
10 days ago