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
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
Maze
Medal Tally
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
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
Rule 110
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Time Distance
Tongue-twisters
Transpose Sentence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
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
Go
GolfScript
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
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
Go
GolfScript
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
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
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
Maze
Medal Tally
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
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
Rule 110
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Time Distance
Tongue-twisters
Transpose Sentence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Hole
Golfer
Chars
Submitted
Quine
lifthrasiir
🥈
37
15 hours ago
Billiards
Shanethegamer
💎
180
47 hours ago
Billiards
KatieLG
🥈
14,192
3 days ago
Foo Fizz Buzz Bar
emgordon154
139
9 days ago
Fibonacci
emgordon154
52
11 days ago
Kaprekar Numbers
JayXon
💎
74
11 days ago
ISBN
DialFrost
121
14 days ago
Kaprekar Numbers
sean-niemann
🥈
76
15 days ago
Quine
HumanoidCPU
78
22 days ago
Levenshtein Distance
edsrzf
🥇
99
26 days ago
Kaprekar Numbers
DialFrost
🥈
76
26 days ago
Kaprekar Numbers
MeWhenI
448
2 Nov 2024
Kaprekar Numbers
Shanethegamer
448
1 Nov 2024
Kaprekar Numbers
KatieLG
515
1 Nov 2024
Kaprekar Numbers
dokutan
186
1 Nov 2024
Kaprekar Numbers
HumanoidCPU
448
1 Nov 2024
Christmas Trees
Shanethegamer
89
29 Oct 2024
Farey Sequence
dokutan
126
26 Oct 2024
Polyominoes
dokutan
🥉
1,227
25 Oct 2024
Rijndael S-box
MostParsingVex
💎
106
23 Oct 2024
Niven Numbers (Long)
pardouin
🥉
62
21 Oct 2024
Hexdump
MeWhenI
🥈
182
20 Oct 2024
Sierpiński Triangle
dokutan
160
19 Oct 2024
Pascal’s Triangle
DialFrost
74
19 Oct 2024
Card Number Validation
dokutan
143
19 Oct 2024
12 Days of Christmas
dokutan
482
17 Oct 2024
Rijndael S-box
JayXon
🥈
109
17 Oct 2024
Quine
JayXon
🥈
37
15 Oct 2024
Card Number Validation
JayXon
💎
88
15 Oct 2024
Levenshtein Distance
dokutan
110
14 Oct 2024
N Queens
MostParsingVex
🥈
246
14 Oct 2024
Ascending Primes
sean-niemann
🥈
79
8 Oct 2024
Happy Numbers
sean-niemann
67
8 Oct 2024
Happy Numbers (Long)
sean-niemann
92
8 Oct 2024
Collatz
sean-niemann
76
8 Oct 2024
Arithmetic Numbers
sean-niemann
🥉
88
8 Oct 2024
Abundant Numbers (Long)
sean-niemann
73
8 Oct 2024
Kolakoski Sequence
dokutan
338
6 Oct 2024
Gijswijt’s Sequence
Mabeloid
2,008
4 Oct 2024
Number Spiral
Mabeloid
308
4 Oct 2024
Prime Numbers
Mabeloid
79
4 Oct 2024
Prime Numbers (Long)
Mabeloid
5,956
4 Oct 2024
Pernicious Numbers
Mabeloid
108
3 Oct 2024
Pernicious Numbers (Long)
Mabeloid
20,670
3 Oct 2024
Pascal’s Triangle
Mabeloid
777
3 Oct 2024
Inventory Sequence
Mabeloid
2,631
3 Oct 2024
Prime Numbers (Long)
dokutan
69
3 Oct 2024
Recamán
Mabeloid
905
3 Oct 2024
Van Eck Sequence
Mabeloid
2,563
3 Oct 2024
Cubes
Mabeloid
2,835
3 Oct 2024
Arithmetic Numbers
Mabeloid
37,650
3 Oct 2024
Arabic to Roman
dokutan
233
3 Oct 2024
Cubes
MeWhenI
💎
214
2 Oct 2024
Card Number Validation
Shanethegamer
🥉
106
2 Oct 2024
Card Number Validation
sean-niemann
🥈
98
2 Oct 2024
Card Number Validation
MeWhenI
108
2 Oct 2024
Rule 110
dokutan
231
28 Sep 2024
Fizz Buzz
alemelis
89
26 Sep 2024
Leap Years
dokutan
47
25 Sep 2024
Fibonacci
JesseNoEyes
59
25 Sep 2024
Fibonacci
pardouin
🥇
40
24 Sep 2024
Diamonds
dokutan
188
23 Sep 2024
Odious Numbers
Mabeloid
81
22 Sep 2024
Odious Numbers (Long)
Mabeloid
1,953
22 Sep 2024
Rule 110
Mabeloid
10,108
22 Sep 2024
Leap Years
Mabeloid
738
22 Sep 2024
Niven Numbers
Mabeloid
99
22 Sep 2024
Niven Numbers (Long)
Mabeloid
7,446
22 Sep 2024
Leyland Numbers
Mabeloid
894
22 Sep 2024
Sierpiński Triangle
Mabeloid
400
22 Sep 2024
Emirp Numbers (Long)
Shanethegamer
135
21 Sep 2024
Kolakoski Sequence
Mabeloid
2,008
21 Sep 2024
Rijndael S-box
Mabeloid
776
21 Sep 2024
ln 2
Mabeloid
1,011
20 Sep 2024
Look and Say
Mabeloid
1,287
20 Sep 2024