Recent Solutions
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
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
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
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
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Binary Lambda Calculus
Calendar
Connect Four
Continued Fractions
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
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Tower of Hanoi
Turtle
Tutorial
All Languages
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
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
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Bytes
Chars
Scoring
Bytes
Chars
Language
All
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
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
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
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
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
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
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
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Binary Lambda Calculus
Calendar
Connect Four
Continued Fractions
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
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Tower of Hanoi
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Abundant Numbers (Long)
TheZwierzLF
71
349ms
a min ago
Card Number Validation
solisolu
128
2ms
4 mins ago
Arithmetic Numbers
TheZwierzLF
121
630ms
4 mins ago
Fibonacci
FortuiteMan
34
5ms
5 mins ago
Minesweeper
AstroOrbis
608
247ms
6 mins ago
Tower of Hanoi
m-tkach
73
11ms
8 mins ago
Cubes
Andrey2001
219
10ms
9 mins ago
Arrows
TheZwierzLF
285
11ms
9 mins ago
Arrows
TheZwierzLF
276
1,293ms
9 mins ago
Tongue-twisters
rucin93
🥈
280
133ms
10 mins ago
Smooth Numbers
Shanethegamer
143
1,369ms
14 mins ago
Arabic to Roman
CornerMercury
152
21ms
25 mins ago
Smooth Numbers
Shanethegamer
266
921ms
27 mins ago
Smooth Numbers
Natanaelel
70
66ms
31 mins ago
τ
Babafaba
86
486ms
32 mins ago
τ
Babafaba
86
155ms
32 mins ago
π
Babafaba
84
466ms
33 mins ago
π
Babafaba
84
85ms
34 mins ago
Continued Fractions
albanian-laundromat
112
9ms
35 mins ago
Musical Chords
edsrzf
💎
128
799ms
35 mins ago
Fibonacci
emgordon154
435
2ms
37 mins ago
Smooth Numbers
Natanaelel
147
1,090ms
47 mins ago
Smooth Numbers
Shanethegamer
145
389ms
48 mins ago
Smooth Numbers
Shanethegamer
131
339ms
59 mins ago
λ
JOrE20
553
8ms
66 mins ago
Inventory Sequence
JOrE20
209
12ms
67 mins ago
Smooth Numbers
Shanethegamer
129
444ms
72 mins ago
Smooth Numbers
Shanethegamer
81
1,394ms
75 mins ago
Happy Numbers (Long)
JOrE20
88
11ms
75 mins ago
Smooth Numbers
Shanethegamer
72
156ms
76 mins ago
Christmas Trees
Andrey2001
82
9ms
77 mins ago
Smooth Numbers
Shanethegamer
73
23ms
80 mins ago
Transpose Sentence
blaztoma
156
10ms
80 mins ago
Card Number Validation
CornerMercury
93
17ms
100 mins ago
Ellipse Perimeters
namelessiw
161
344ms
102 mins ago
Billiards
namelessiw
225
373ms
103 mins ago
Smooth Numbers
namelessiw
128
703ms
104 mins ago
Game of Life
Maashau
201
2ms
106 mins ago
π
Andrey2001
196
172ms
114 mins ago
Highly Composite Numbers
AdrienHache
126
4,931ms
2 hours ago
Sphenic Numbers
2bular
32
271ms
2 hours ago
DFA Simulator
Bmrl7
198
10ms
2 hours ago
Musical Chords
edsrzf
💎
232
7ms
2 hours ago
Arithmetic Numbers
stephanie-flower
139
49ms
2 hours ago
Spelling Numbers
stephanie-flower
700
11ms
2 hours ago
ASCII Table
kg583
129
7ms
2 hours ago
Mandelbrot
CornerMercury
114
234ms
2 hours ago
Minesweeper
JesseNoEyes
330
27ms
2 hours ago
Minesweeper
dahappy1989
411
45ms
2 hours ago
ROT13
Bmrl7
120
17ms
2 hours ago
Mahjong
iczelia
1,188
13ms
2 hours ago
Maze
bitsandbeyond
🥈
108
3,979ms
2 hours ago
Fibonacci
Andrey2001
38
10ms
2 hours ago
Leap Years
Andrey2001
70
10ms
2 hours ago
Minesweeper
blaztoma
145
14ms
3 hours ago
Smooth Numbers
Yax42
77
75ms
3 hours ago
φ
blaztoma
55
62ms
3 hours ago
Transpose Sentence
blaztoma
236
68ms
3 hours ago
Prime Numbers
JOrE20
64
9ms
3 hours ago
Intersection
GrayJoKing
🥉
162
16ms
3 hours ago
Prime Numbers
JOrE20
58
9ms
3 hours ago
Prime Numbers (Long)
JOrE20
58
19ms
3 hours ago
Semiprime Numbers
2bular
28
2,190ms
3 hours ago
Fizz Buzz
intgrah
🥇
56
9ms
3 hours ago
Smooth Numbers
hallvabo
89
38ms
3 hours ago
Lucky Tickets
snoozingnewt
🥉
106
843ms
3 hours ago
Lucky Tickets
snoozingnewt
216
248ms
3 hours ago
Factorial Factorisation
Bmrl7
144
14ms
3 hours ago
Lucky Tickets
snoozingnewt
96
9ms
3 hours ago
ln 2
JOrE20
988
6ms
3 hours ago
Lucky Tickets
snoozingnewt
271
233ms
4 hours ago
DFA Simulator
snoozingnewt
319
255ms
4 hours ago
Topological Sort
snoozingnewt
🥉
337
274ms
4 hours ago
Sudoku (Fill-in)
snoozingnewt
380
218ms
4 hours ago
Smooth Numbers
Yax42
128
620ms
4 hours ago