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
Crystal
D
Dart
Elixir
F#
Factor
Forth
Fortran
Go
GolfScript
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lisp
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
Crystal
D
Dart
Elixir
F#
Factor
Forth
Fortran
Go
GolfScript
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lisp
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
Bytes
Submitted
Billiards
KatieLG
🥈
14,461
2 days ago
Billiards
sean-niemann
💎
230
4 days ago
Quine
lifthrasiir
63
11 days ago
π
Unknownuserfrommars
1,010
12 days ago
Collatz
madeforlosers
96
12 days ago
QR Decoder
sean-niemann
💎
188
14 days ago
Factorial Factorisation
sean-niemann
🥈
124
14 days ago
Transpose Sentence
sean-niemann
🥈
167
14 days ago
Look and Say
sean-niemann
134
14 days ago
Happy Numbers
sean-niemann
75
14 days ago
Kaprekar Numbers
sean-niemann
💎
87
15 days ago
𝑒
Jacob385
1,009
20 days ago
Kaprekar Numbers
DialFrost
🥈
88
21 days ago
ISBN
aksyristos
863
27 days ago
Kaprekar Numbers
MeWhenI
🥉
509
2 Nov 2024
Kaprekar Numbers
KatieLG
510
1 Nov 2024
Kaprekar Numbers
dokutan
🥉
509
1 Nov 2024
Kaprekar Numbers
HumanoidCPU
1,115
1 Nov 2024
12 Days of Christmas
sean-niemann
518
30 Oct 2024
Farey Sequence
dokutan
146
29 Oct 2024
π
m4xxh
1,022
26 Oct 2024
Polyominoes
dokutan
🥉
4,836
25 Oct 2024
𝑒
DialFrost
💎
109
23 Oct 2024
Niven Numbers (Long)
pardouin
69
21 Oct 2024
Divisors
DialFrost
🥇
70
19 Oct 2024
Fibonacci
DialFrost
45
17 Oct 2024
Farey Sequence
DialFrost
🥉
72
17 Oct 2024
Pascal’s Triangle
DialFrost
70
17 Oct 2024
Evil Numbers
anter69
244
16 Oct 2024
Hexdump
KatieLG
6,448
12 Oct 2024
Fizz Buzz
aliakseikalosha
127
10 Oct 2024
Pernicious Numbers
pardouin
🥇
49
5 Oct 2024
Odious Numbers (Long)
pardouin
54
5 Oct 2024
Fibonacci
pardouin
🥉
43
5 Oct 2024
Odious Numbers
pardouin
53
5 Oct 2024
Evil Numbers (Long)
pardouin
55
5 Oct 2024
Evil Numbers
pardouin
53
5 Oct 2024
Niven Numbers
pardouin
🥇
56
5 Oct 2024
Card Number Validation
MeWhenI
🥈
122
5 Oct 2024
Fizz Buzz
dokutan
98
4 Oct 2024
Foo Fizz Buzz Bar
dokutan
142
4 Oct 2024
PalindromemordnilaP
MostParsingVex
🦄
153
3 Oct 2024
Card Number Validation
sean-niemann
💎
114
2 Oct 2024
Sierpiński Triangle
dokutan
571
2 Oct 2024
√2
olleicua
1,005
1 Oct 2024
Van Eck Sequence
KatieLG
3,566
30 Sep 2024
Vampire Numbers
KatieLG
1,231
30 Sep 2024
Tongue-twisters
KatieLG
539
30 Sep 2024
Smith Numbers
KatieLG
2,208
30 Sep 2024
Sierpiński Triangle
KatieLG
572
30 Sep 2024
Rijndael S-box
KatieLG
786
30 Sep 2024
Recamán
KatieLG
1,152
30 Sep 2024
Proximity Grid
KatieLG
🥉
4,029
30 Sep 2024
Prime Numbers (Long)
KatieLG
7,200
30 Sep 2024
Prime Numbers
KatieLG
98
30 Sep 2024
Polyominoes
KatieLG
4,844
30 Sep 2024
Pernicious Numbers (Long)
KatieLG
24,988
30 Sep 2024
Pernicious Numbers
KatieLG
137
30 Sep 2024
Pascal’s Triangle
KatieLG
791
30 Sep 2024
Odious Numbers (Long)
KatieLG
2,453
30 Sep 2024
Odious Numbers
KatieLG
101
30 Sep 2024
Number Spiral
KatieLG
312
30 Sep 2024
Niven Numbers (Long)
KatieLG
9,002
30 Sep 2024
Niven Numbers
KatieLG
126
30 Sep 2024
N Queens
KatieLG
1,399
30 Sep 2024
Lucky Numbers
KatieLG
5,837
30 Sep 2024
Look and Say
KatieLG
1,303
30 Sep 2024
Leap Years
KatieLG
878
30 Sep 2024
Inventory Sequence
KatieLG
3,634
30 Sep 2024
Happy Numbers (Long)
KatieLG
697
30 Sep 2024
Happy Numbers
KatieLG
141
30 Sep 2024
Gijswijt’s Sequence
KatieLG
3,008
30 Sep 2024
Foo Fizz Buzz Bar
KatieLG
6,739
30 Sep 2024
Fizz Buzz
KatieLG
515
30 Sep 2024
Fibonacci
KatieLG
167
30 Sep 2024