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
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
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
Tower of Hanoi
HumanoidCPU
3,585
6ms
19 hours ago
Fibonacci
edsrzf
🥉
42
7ms
19 hours ago
Arithmetic Numbers
kg583
💎
96
4,062ms
36 hours ago
brainfuck
kg583
💎
191
150ms
2 days ago
brainfuck
zacjl
🥈
199
49ms
2 days ago
Hexdump
kg583
🥈
179
36ms
3 days ago
𝑒
JOrE20
1,012
6ms
4 days ago
Tower of Hanoi
Shanethegamer
83
10ms
4 days ago
Semiprime Numbers
kg583
95
4,140ms
5 days ago
ROT13
kg583
113
24ms
5 days ago
ROT13
snoozingnewt
177
9ms
5 days ago
ASCII Table
snoozingnewt
176
7ms
5 days ago
Fractions
snoozingnewt
94
7ms
6 days ago
Tower of Hanoi
bitsandbeyond
90
11ms
7 days ago
Pangram Grep
Babafaba
121
8ms
7 days ago
Mandelbrot
snoozingnewt
🥉
259
335ms
7 days ago
Tower of Hanoi
kg583
75
11ms
7 days ago
Tower of Hanoi
edsrzf
75
11ms
7 days ago
Tutorial
Openstreetmapler
151
7ms
8 days ago
Kolakoski Sequence
snoozingnewt
134
7ms
8 days ago
Kaprekar Numbers
Babafaba
🥉
448
6ms
8 days ago
Catalan Numbers
snoozingnewt
87
7ms
8 days ago
Game of Life
kg583
153
13ms
8 days ago
𝑒
Babafaba
1,011
5ms
9 days ago
Rijndael S-box
Babafaba
776
5ms
9 days ago
γ
Babafaba
1,011
6ms
9 days ago
Transpose Sentence
kg583
102
46ms
9 days ago
Happy Numbers (Long)
kg583
💎
93
16ms
10 days ago
Lucky Tickets
kg583
🥉
170
10ms
10 days ago
Diamonds
kg583
💎
113
7ms
10 days ago
Ellipse Perimeters
Shanethegamer
112
7ms
10 days ago
Scrambled Sort
kg583
122
13ms
10 days ago
Minesweeper
edsrzf
💎
126
68ms
11 days ago
Minesweeper
kg583
🥈
130
58ms
11 days ago
Minesweeper
Shanethegamer
🥉
133
68ms
11 days ago
Musical Chords
emgordon154
💎
222
17ms
11 days ago
Odious Numbers (Long)
snoozingnewt
82
12ms
13 days ago
Evil Numbers (Long)
snoozingnewt
83
8ms
13 days ago
Evil Numbers
snoozingnewt
81
6ms
13 days ago
λ
Babafaba
1,011
6ms
13 days ago
Rule 110
kg583
🥈
142
69ms
14 days ago
ASCII Table
kg583
138
6ms
14 days ago
Ascending Primes
kg583
120
1,363ms
14 days ago
QR Decoder
kg583
🥈
264
6ms
14 days ago
Tongue-twisters
snoozingnewt
371
6ms
14 days ago
ASCII Table
edsrzf
🥇
123
10ms
16 days ago
Pernicious Numbers
snoozingnewt
58
7ms
17 days ago
Poker
edsrzf
💎
377
9ms
18 days ago
Poker
Shanethegamer
🥈
385
9ms
18 days ago
Day of Week
ZoDoneRightNow
107
24ms
20 days ago
Arabic to Roman
snoozingnewt
79
37ms
20 days ago
Prime Numbers (Long)
CaedenHarper
85
654ms
20 days ago
Foo Fizz Buzz Bar
kg583
🥈
109
13ms
21 days ago
ISBN
kg583
127
11ms
21 days ago
Zodiac Signs
kg583
💎
181
18ms
21 days ago
Rijndael S-box
kg583
💎
215
35ms
21 days ago
Morse Encoder
kg583
💎
194
8ms
21 days ago
N Queens
kg583
🥈
154
25ms
21 days ago
Card Number Validation
kg583
115
11ms
21 days ago
Hilbert Curve
snoozingnewt
💎
573
8ms
21 days ago
Foo Fizz Buzz Bar
snoozingnewt
164
13ms
21 days ago
Tutorial
luuumine
151
9ms
22 days ago
Tutorial
Babafaba
151
10ms
22 days ago
Catalan’s Constant
kg583
💎
141
19ms
22 days ago
Arrows
kg583
185
8ms
22 days ago
Farey Sequence
snoozingnewt
136
10ms
23 days ago
Evil Numbers (Long)
Babafaba
52
13ms
23 days ago
Evil Numbers
Babafaba
50
6ms
23 days ago
Odious Numbers
Babafaba
49
7ms
23 days ago
Odious Numbers (Long)
Babafaba
50
13ms
23 days ago
Pangram Grep
kg583
96
17ms
23 days ago
Abundant Numbers
kg583
🥇
66
7ms
24 days ago
Van Eck Sequence
snoozingnewt
99
12ms
24 days ago
Inventory Sequence
snoozingnewt
116
10ms
25 days ago
Odious Numbers
snoozingnewt
81
6ms
25 days ago