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
Leap Years
cubeBullet
95
20 hours ago
12 Days of Christmas
cubeBullet
607
21 hours ago
Fizz Buzz
JunkIce
168
22 hours ago
Abundant Numbers
mantrades
138
24 hours ago
Fizz Buzz
mantrades
174
25 hours ago
Billiards
pardouin
🥈
189
2 days ago
Seven Segment
snyderek
182
2 days ago
Billiards
KatieLG
14,345
3 days ago
brainfuck
JackieAlacrity2373
2,367
3 days ago
Reverse Polish Notation
snyderek
170
3 days ago
Billiards
ovs-code
💎
172
3 days ago
Number Spiral
snyderek
🥉
133
3 days ago
Billiards
sean-niemann
🥉
194
4 days ago
Reverse Polish Notation
08jne01
535
5 days ago
Pernicious Numbers
FlyingPenguin223
70
6 days ago
Recamán
Herbert00709
128
6 days ago
Vampire Numbers
Herbert00709
1,712
6 days ago
Look and Say
Herbert00709
197
6 days ago
Farey Sequence
Herbert00709
118
6 days ago
Fibonacci
IdkWhatIsIdk
98
7 days ago
Game of Life
snyderek
184
7 days ago
Foo Fizz Buzz Bar
emgordon154
🥉
129
10 days ago
Billiards
GolfingSuccess
🥉
194
10 days ago
Arrows
Herbert00709
280
10 days ago
Pascal’s Triangle
snyderek
90
10 days ago
Niven Numbers (Long)
snyderek
85
10 days ago
Niven Numbers
snyderek
70
10 days ago
Happy Numbers
snyderek
118
10 days ago
brainfuck
snyderek
🥉
177
11 days ago
Fibonacci
madeforlosers
79
12 days ago
Quine
Unknownuserfrommars
121
12 days ago
Fizz Buzz
CodyFusfeld
208
12 days ago
Fizz Buzz
abqut
133
12 days ago
Quine
NicknamedTwice
117
13 days ago
Fizz Buzz
hannes-creator-rgb
178
13 days ago
Collatz
08jne01
116
13 days ago
Kolakoski Sequence
snyderek
91
13 days ago
Game of Life
KasperKivimaeki
💎
130
13 days ago
Collatz
erikji
117
13 days ago
12 Days of Christmas
BlankSpruce
💎
280
13 days ago
Game of Life
JayXon
🥈
131
13 days ago
Inventory Sequence
BlankSpruce
95
14 days ago
Forsyth–Edwards Notation
KasperKivimaeki
🥉
143
14 days ago
Fibonacci
Unknownuserfrommars
94
14 days ago
Kolakoski Constant
Herbert00709
176
14 days ago
Pangram Grep
snyderek
104
14 days ago
Inventory Sequence
Alex-x90
89
14 days ago
Inventory Sequence
snyderek
💎
83
14 days ago
Kolakoski Sequence
Herbert00709
101
14 days ago
𝑒
Herbert00709
120
14 days ago
Leap Years
henrygagnier
102
15 days ago
𝑒
KasperKivimaeki
🥉
111
16 days ago
12 Days of Christmas
JayXon
🥈
289
16 days ago
Polyominoes
snyderek
🥈
214
16 days ago
Emirp Numbers (Long)
ovs-code
🥇
117
16 days ago
Quine
zygoloid
🥈
58
18 days ago
Sierpiński Triangle
Herbert00709
95
18 days ago
Fizz Buzz
qwunchy
215
18 days ago
Fibonacci
wh3n3v3r
75
19 days ago
Kaprekar Numbers
Natanaelel
536
20 days ago
Levenshtein Distance
snyderek
227
20 days ago
Recamán
snyderek
91
20 days ago
Fibonacci
JackieAlacrity2373
122
20 days ago
Pernicious Numbers (Long)
JackieAlacrity2373
517
20 days ago
Pernicious Numbers
JackieAlacrity2373
514
20 days ago
Evil Numbers
JackieAlacrity2373
286
20 days ago
Niven Numbers (Long)
BlankSpruce
88
21 days ago
Niven Numbers
BlankSpruce
73
21 days ago
Fibonacci
ivan-on-github
81
21 days ago
Proximity Grid
snyderek
🥈
173
21 days ago
Kaprekar Numbers
Herbert00709
104
21 days ago
Kaprekar Numbers
roupiq
116
22 days ago
N Queens
klixel
317
22 days ago
Look and Say
snyderek
114
24 days ago
Roman to Arabic
snyderek
158
25 days ago