Recent Solutions
Golfers
Solutions
All Holes
12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
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)
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
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++
COBOL
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
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++
COBOL
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
Ruby
Rust
sed
SQL
Swift
Tcl
TeX
V
VimL
Wren
Zig
Hole
All
12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
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)
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
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
Bytes
Submitted
Pangram Grep
ridingqwerty
364
13 hours ago
Farey Sequence
DialFrost
🥈
162
2 days ago
Farey Sequence
JayXon
💎
156
5 days ago
Fibonacci
sean-niemann
125
6 days ago
Pascal’s Triangle
sean-niemann
🥉
163
6 days ago
Divisors
sean-niemann
143
6 days ago
Farey Sequence
sean-niemann
🥈
162
6 days ago
𝑒
JayXon
🥇
148
7 days ago
𝑒
ovs-code
🥇
148
7 days ago
Farey Sequence
KatieLG
5,209
7 days ago
Farey Sequence
MeWhenI
167
8 days ago
ISBN
Yewzir
189
11 days ago
Repeating Decimals
MeWhenI
🥈
505
12 days ago
Fibonacci
Yewzir
121
17 days ago
π
mikehanus
1,119
19 days ago
Niven Numbers (Long)
Yewzir
131
21 days ago
Tongue-twisters
dokutan
627
23 days ago
Rijndael S-box
HumanoidCPU
834
23 days ago
Kolakoski Constant
HumanoidCPU
1,054
23 days ago
τ
HumanoidCPU
1,054
23 days ago
φ
HumanoidCPU
1,054
23 days ago
√2
HumanoidCPU
1,054
23 days ago
λ
HumanoidCPU
1,054
23 days ago
γ
HumanoidCPU
1,054
23 days ago
ln 2
HumanoidCPU
1,054
23 days ago
Catalan’s Constant
HumanoidCPU
1,054
23 days ago
Sierpiński Triangle
kcinnu
🥇
111
24 days ago
𝑒
HumanoidCPU
1,054
25 days ago
π
HumanoidCPU
1,055
25 days ago
Sierpiński Triangle
JayXon
🥇
111
25 days ago
Christmas Trees
JayXon
💎
132
26 days ago
π
RaBa21
1,133
27 days ago
Prime Numbers (Long)
Betuaredead
🥇
127
12 Nov 2023
Fibonacci
Betuaredead
123
11 Nov 2023
Niven Numbers
Betuaredead
🥇
112
11 Nov 2023
Quine
Betuaredead
🥇
72
11 Nov 2023
Evil Numbers (Long)
Betuaredead
🥉
115
11 Nov 2023
Odious Numbers (Long)
Betuaredead
🥉
114
11 Nov 2023
Evil Numbers
Betuaredead
113
11 Nov 2023
Odious Numbers
Betuaredead
113
11 Nov 2023
Pernicious Numbers
Betuaredead
🥇
107
11 Nov 2023
Leap Years
DialFrost
🥉
113
8 Nov 2023
Jacobi Symbol
JayXon
🥇
250
7 Nov 2023
DFA Simulator
jacobly0
💎
672
2 Nov 2023
Abundant Numbers
arctouch-cristiannevianna
167
31 Oct 2023
Roman to Arabic
JayXon
💎
197
31 Oct 2023
Prime Numbers (Long)
prplz
135
29 Oct 2023
Pernicious Numbers
prplz
🥇
107
29 Oct 2023
Odious Numbers
prplz
🥉
112
29 Oct 2023
Niven Numbers
prplz
🥇
112
29 Oct 2023