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
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
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
Topological Sort
GrayJoKing
🥈
163
48ms
a min ago
Topological Sort
edsrzf
💎
162
1,924ms
35 mins ago
Sierpiński Triangle
edsrzf
95
42ms
61 mins ago
Rock-paper-scissors-Spock-lizard
edsrzf
🥉
295
4ms
6 hours ago
Trinomial Triangle
DialFrost
🥇
77
4ms
7 hours ago
99 Bottles of Beer
edsrzf
🥈
248
6ms
7 hours ago
Morse Encoder
edsrzf
💎
278
4ms
16 hours ago
QR Decoder
edsrzf
💎
209
4ms
16 hours ago
12 Days of Christmas
edsrzf
💎
409
3ms
18 hours ago
Diamonds
edsrzf
108
4ms
20 hours ago
ISBN
edsrzf
99
5ms
22 hours ago
Hilbert Curve
edsrzf
💎
354
3ms
26 hours ago
DFA Simulator
edsrzf
🥈
181
17ms
28 hours ago
Roman to Arabic
edsrzf
118
40ms
32 hours ago
Arabic to Roman
edsrzf
💎
139
19ms
32 hours ago
Intersection
edsrzf
🥉
123
5ms
32 hours ago
Emojify
edsrzf
💎
165
4ms
40 hours ago
Tongue-twisters
Mukundan314
312
3ms
41 hours ago
United States
edsrzf
🥉
135
4ms
42 hours ago
Niven Numbers (Long)
edsrzf
🥇
59
30ms
43 hours ago
Recamán
edsrzf
92
4ms
44 hours ago
Tongue-twisters
edsrzf
💎
282
4ms
44 hours ago
Collatz
edsrzf
🥇
84
85ms
2 days ago
Vampire Numbers
edsrzf
💎
181
1,713ms
2 days ago
Ten-pin Bowling
edsrzf
💎
173
7ms
2 days ago
Game of Life
edsrzf
💎
150
48ms
2 days ago
Gijswijt’s Sequence
edsrzf
💎
98
3ms
2 days ago
Hilbert Curve
error256
🥈
414
3ms
2 days ago
ln 2
edsrzf
🥈
67
25ms
2 days ago
Lucky Numbers
edsrzf
129
17ms
2 days ago
Jacobi Symbol
edsrzf
🥇
136
5ms
2 days ago
Inventory Sequence
edsrzf
75
5ms
3 days ago
Card Number Validation
edsrzf
🥇
69
4ms
3 days ago
Sudoku (Fill-in)
edsrzf
💎
244
2,186ms
3 days ago
Hexdump
edsrzf
167
4ms
3 days ago
Reverse Polish Notation
edsrzf
🥇
84
14ms
4 days ago
Partition Numbers
edsrzf
💎
89
6ms
4 days ago
brainfuck
edsrzf
💎
170
6ms
4 days ago
Odious Numbers (Long)
edsrzf
56
4ms
5 days ago
Evil Numbers (Long)
edsrzf
🥇
57
4ms
5 days ago
Odious Numbers
edsrzf
55
3ms
5 days ago
Evil Numbers
edsrzf
56
4ms
5 days ago
Divisors
edsrzf
73
8ms
5 days ago
Niven Numbers
edsrzf
🥇
46
3ms
5 days ago
Tic-tac-toe
edsrzf
81
40ms
5 days ago
Trinomial Triangle
MeWhenI
2,073
3ms
5 days ago
Star Wars GPT
edsrzf
💎
169
85ms
5 days ago
Ordinal Numbers
edsrzf
💎
73
5ms
5 days ago
Levenshtein Distance
dokutan
631
4ms
6 days ago
CSS Colors
edsrzf
💎
642
6ms
6 days ago
N Queens
edsrzf
💎
141
93ms
6 days ago
Day of Week
edsrzf
🥇
50
9ms
6 days ago
Set
edsrzf
🥈
170
247ms
6 days ago
Pangram Grep
edsrzf
💎
76
4ms
6 days ago
Medal Tally
edsrzf
172
13ms
6 days ago
Leyland Numbers
edsrzf
💎
108
6ms
6 days ago
Transpose Sentence
edsrzf
💎
85
43ms
7 days ago
Tower of Hanoi
HumanoidCPU
3,583
3ms
7 days ago
𝑒
JOrE20
1,007
3ms
7 days ago
Niven Numbers
snoozingnewt
72
3ms
7 days ago
γ
snoozingnewt
🥈
760
3ms
8 days ago
λ
snoozingnewt
757
3ms
9 days ago
Odious Numbers
Babafaba
79
3ms
9 days ago
Levenshtein Distance
edsrzf
💎
154
2,431ms
10 days ago
Scrambled Sort
albanian-laundromat
🥈
270
14ms
11 days ago
Card Number Validation
snoozingnewt
200
4ms
11 days ago
Niven Numbers
albanian-laundromat
65
3ms
11 days ago
ROT13
snoozingnewt
192
10ms
11 days ago
Quine
iczelia
41
3ms
12 days ago
Fractions
snoozingnewt
139
4ms
13 days ago
Tower of Hanoi
bitsandbeyond
126
4ms
13 days ago
Tower of Hanoi
edsrzf
70
5ms
13 days ago
Set
snoozingnewt
417
87ms
14 days ago
Mandelbrot
snoozingnewt
🥈
334
623ms
14 days ago
Tutorial
Openstreetmapler
150
4ms
14 days ago