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
Tongue-twisters
JOrE20
401
7ms
a min ago
Tongue-twisters
prestosilver
17,466
2ms
a min ago
Continued Fractions
kg583
142
10ms
a min ago
Recamán
jkelly467
91
2,208ms
3 mins ago
Tutorial
prestosilver
161
2ms
5 mins ago
Hilbert Curve
emgordon154
💎
231
139ms
12 mins ago
Mandelbrot
JOrE20
💎
548
8ms
17 mins ago
Pangram Grep
luuumine
111
189ms
19 mins ago
Arrows
robbertvz
251
10ms
20 mins ago
Look and Say
rcht
🥉
372
10ms
24 mins ago
Odious Numbers
JayXon
💎
37
2ms
25 mins ago
Continued Fractions
ovs-code
85
32ms
31 mins ago
Prime Numbers (Long)
luuumine
96
119ms
32 mins ago
Foo Fizz Buzz Bar
JOrE20
86
11ms
35 mins ago
24 Game
snoozingnewt
🥈
359
320ms
35 mins ago
Rule 110
snoozingnewt
146
113ms
39 mins ago
Continued Fractions
kg583
150
5ms
42 mins ago
24 Game
aviyanp
💎
355
791ms
45 mins ago
Trinomial Triangle
Natanaelel
13
53ms
52 mins ago
Hilbert Curve
JOrE20
🥈
755
7ms
53 mins ago
Continued Fractions
albanian-laundromat
115
2ms
57 mins ago
Pascal’s Triangle
prestosilver
98
2ms
63 mins ago
Abundant Numbers (Long)
robbertvz
82
20ms
64 mins ago
Abundant Numbers
robbertvz
81
10ms
66 mins ago
99 Bottles of Beer
robbertvz
351
10ms
67 mins ago
Kolakoski Constant
kmathis22
225
509ms
70 mins ago
Factorial Factorisation
CommandLeo
141
21ms
70 mins ago
Continued Fractions
ovs-code
59
3ms
72 mins ago
Prime Numbers (Long)
luuumine
61
186ms
73 mins ago
Scrambled Sort
DialFrost
🥉
226
389ms
76 mins ago
Prime Numbers
dokutan
63
3ms
78 mins ago
Prime Numbers
dokutan
54
2ms
81 mins ago
Hilbert Curve
JOrE20
5,139
48ms
82 mins ago
Arithmetic Numbers
robbertvz
85
1,853ms
82 mins ago
Prime Numbers (Long)
dokutan
58
1,224ms
82 mins ago
Pernicious Numbers
dokutan
35
2ms
83 mins ago
Topological Sort
DialFrost
359
390ms
83 mins ago
Pernicious Numbers (Long)
dokutan
70
8ms
84 mins ago
Pangram Grep
dokutan
101
3ms
85 mins ago
Niven Numbers (Long)
dokutan
65
4ms
85 mins ago
Niven Numbers
dokutan
39
2ms
86 mins ago
Leap Years
dokutan
🥇
40
2ms
86 mins ago
Prime Numbers
luuumine
65
128ms
86 mins ago
Prime Numbers (Long)
luuumine
🥇
67
136ms
87 mins ago
Fibonacci
dokutan
42
2ms
87 mins ago
Odious Numbers (Long)
dokutan
59
2ms
88 mins ago
Evil Numbers (Long)
dokutan
60
3ms
88 mins ago
Odious Numbers
dokutan
43
2ms
88 mins ago
Evil Numbers
dokutan
43
2ms
88 mins ago
Continued Fractions
ovs-code
134
22ms
88 mins ago
Collatz
dokutan
68
5ms
89 mins ago
Card Number Validation
dokutan
116
3ms
89 mins ago
Arithmetic Numbers
dokutan
75
1,903ms
91 mins ago
Abundant Numbers (Long)
dokutan
🥈
61
15ms
92 mins ago
Abundant Numbers
dokutan
60
3ms
92 mins ago
Topological Sort
m-tkach
77
2,972ms
106 mins ago
Fibonacci
dokutan
42
57ms
109 mins ago
Tutorial
dokutan
155
77ms
110 mins ago
Evil Numbers
dokutan
79
56ms
118 mins ago
Rule 110
prestosilver
115
6ms
2 hours ago
Fibonacci
solisolu
85
3ms
2 hours ago
Pernicious Numbers
09cf
69
58ms
2 hours ago
Pernicious Numbers
09cf
49
2ms
2 hours ago
Kolakoski Sequence
kmathis22
131
347ms
2 hours ago
Sierpiński Triangle
JOrE20
293
7ms
2 hours ago
Number Spiral
emgordon154
64
35ms
2 hours ago
Roman to Arabic
JOrE20
134
493ms
2 hours ago
Spelling Numbers
KasperKivimaeki
🥉
397
377ms
3 hours ago
Time Distance
bzijlema
265
30ms
3 hours ago
Day of Week
JOrE20
28
251ms
3 hours ago
ISBN
123mjb
161
16ms
3 hours ago
Trinomial Triangle
lukegustafson
🥇
65
9ms
3 hours ago
Card Number Validation
kmathis22
171
344ms
4 hours ago
Topological Sort
lukegustafson
🥉
93
86ms
4 hours ago
Foo Fizz Buzz Bar
Maashau
170
3ms
4 hours ago