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
brainfuck
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
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
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Poker
Prime Numbers
Prime Numbers (Long)
Proximity Grid
QR Decoder
Quine
Recamán
Repeating Decimals
Reverse Polish Notation
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 v2
Ten-pin Bowling
Time Distance
Tongue-twisters
United States
Vampire Numbers
Van Eck Sequence
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
All Languages
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Clojure
COBOL
Coconut
Crystal
D
Dart
Elixir
F#
Factor
Forth
Fortran
Go
GolfScript
Haskell
Hexagony
J
Janet
Java
JavaScript
Julia
K
Lisp
Lua
Nim
OCaml
Pascal
Perl
PHP
PowerShell
Prolog
Python
R
Raku
Rockstar
Ruby
Rust
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++
Clojure
COBOL
Coconut
Crystal
D
Dart
Elixir
F#
Factor
Forth
Fortran
Go
GolfScript
Haskell
Hexagony
J
Janet
Java
JavaScript
Julia
K
Lisp
Lua
Nim
OCaml
Pascal
Perl
PHP
PowerShell
Prolog
Python
R
Raku
Rockstar
Ruby
Rust
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
brainfuck
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
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
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Poker
Prime Numbers
Prime Numbers (Long)
Proximity Grid
QR Decoder
Quine
Recamán
Repeating Decimals
Reverse Polish Notation
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 v2
Ten-pin Bowling
Time Distance
Tongue-twisters
United States
Vampire Numbers
Van Eck Sequence
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Hole
Golfer
Chars
Submitted
Happy Numbers (Long)
HumanoidCPU
558
2 hours ago
Niven Numbers (Long)
HumanoidCPU
7,444
16 hours ago
τ
stefangimmillaro
87
18 hours ago
Hexdump
stefangimmillaro
🥈
119
21 hours ago
24 Game
HumanoidCPU
12,438
22 hours ago
γ
HumanoidCPU
1,009
a day ago
Fibonacci
error256
25
a day ago
Lucky Numbers
HumanoidCPU
4,826
a day ago
Vampire Numbers
HumanoidCPU
1,077
a day ago
Farey Sequence
HumanoidCPU
4,360
a day ago
Niven Numbers
HumanoidCPU
97
a day ago
Van Eck Sequence
HumanoidCPU
2,561
a day ago
Sierpiński Triangle
HumanoidCPU
398
2 days ago
Rule 110
HumanoidCPU
10,106
2 days ago
Catalan Numbers
Yewzir
61
2 days ago
Emirp Numbers (Long)
HumanoidCPU
1,162
3 days ago
Pangram Grep
error256
53
4 days ago
Leap Years
error256
46
4 days ago
Fibonacci
AntoineBlondon
56
4 days ago
Emirp Numbers
HumanoidCPU
142
4 days ago
N Queens
SirBogman
💎
91
4 days ago
N Queens
stefangimmillaro
🥈
95
4 days ago
Diamonds
Jacob385
1,109
5 days ago
Collatz
error256
62
5 days ago
Prime Numbers
error256
45
5 days ago
Diamonds
error256
1,109
5 days ago
Foo Fizz Buzz Bar
dokutan
153
5 days ago
Fizz Buzz
dokutan
97
5 days ago
Emojify
dokutan
306
5 days ago
12 Days of Christmas
HumanoidCPU
2,375
5 days ago
Ten-pin Bowling
stefangimmillaro
137
5 days ago
Smith Numbers
HumanoidCPU
1,830
5 days ago
Happy Numbers
HumanoidCPU
113
6 days ago
Collatz
HumanoidCPU
3,232
6 days ago
Divisors
HumanoidCPU
1,172
6 days ago
Gijswijt’s Sequence
HumanoidCPU
2,006
6 days ago
Prime Numbers
dokutan
42
7 days ago
Prime Numbers (Long)
dokutan
43
7 days ago
N Queens
rucin93
158
7 days ago
N Queens
MeWhenI
🥉
98
7 days ago
ln 2
HumanoidCPU
1,009
7 days ago
N Queens
HumanoidCPU
1,252
7 days ago
N Queens
KatieLG
1,399
8 days ago
N Queens
Shanethegamer
123
8 days ago
N Queens
dokutan
1,252
8 days ago
Ordinal Numbers
dokutan
135
8 days ago
Abundant Numbers
dokutan
55
8 days ago
Pangram Grep
dokutan
61
9 days ago
Fibonacci
dokutan
33
9 days ago
Evil Numbers
dokutan
32
9 days ago
Odious Numbers
dokutan
32
9 days ago
Christmas Trees
dokutan
68
9 days ago
Divisors
dokutan
55
9 days ago
Evil Numbers (Long)
dokutan
34
9 days ago
Abundant Numbers
sean-niemann
43
9 days ago
Pernicious Numbers (Long)
dokutan
43
9 days ago
Pernicious Numbers
dokutan
29
9 days ago
Odious Numbers (Long)
dokutan
34
9 days ago
Niven Numbers
dokutan
36
9 days ago
Leap Years
dokutan
41
9 days ago