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
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
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
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
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
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
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
Niven Numbers (Long)
pardouin
130
a day ago
Rijndael S-box
emgordon154
379
a day ago
Tongue-twisters
emgordon154
💎
398
a day ago
Leap Years
emgordon154
121
2 days ago
Fibonacci
dokutan
130
3 days ago
Fizz Buzz
aliakseikalosha
240
7 days ago
N Queens
MostParsingVex
💎
284
8 days ago
Prime Numbers
emgordon154
129
12 days ago
Pangram Grep
CaedenHarper
321
14 days ago
Gijswijt’s Sequence
Mabeloid
3,074
18 days ago
Number Spiral
Mabeloid
384
18 days ago
Prime Numbers
Mabeloid
170
18 days ago
Prime Numbers (Long)
Mabeloid
7,251
18 days ago
Card Number Validation
Shanethegamer
217
18 days ago
Pernicious Numbers
Mabeloid
209
18 days ago
Pernicious Numbers (Long)
Mabeloid
24,988
18 days ago
Pascal’s Triangle
Mabeloid
863
18 days ago
Inventory Sequence
Mabeloid
3,697
18 days ago
24 Game
emgordon154
🥈
5,575
18 days ago
Transpose Sentence
jwhear
🥉
245
19 days ago
Medal Tally
jwhear
🥉
388
19 days ago
Recamán
Mabeloid
1,221
19 days ago
Van Eck Sequence
Mabeloid
3,629
19 days ago
Cubes
Mabeloid
4,286
19 days ago
Arithmetic Numbers
Mabeloid
45,404
19 days ago
Card Number Validation
JayXon
💎
155
19 days ago
λ
emgordon154
💎
575
19 days ago
Christmas Trees
emgordon154
170
19 days ago
Card Number Validation
emgordon154
🥈
166
19 days ago
Card Number Validation
MeWhenI
🥉
179
19 days ago
Divisors
jwhear
175
20 days ago
Tongue-twisters
jwhear
🥉
447
20 days ago
Happy Numbers (Long)
emgordon154
213
20 days ago
PalindromemordnilaP
emgordon154
🥉
288
20 days ago
Collatz
emgordon154
152
20 days ago
Catalan Numbers
emgordon154
🥇
121
20 days ago
Card Number Validation
jwhear
197
20 days ago
Kolakoski Sequence
jwhear
171
20 days ago
Fizz Buzz
jwhear
190
20 days ago
Pangram Grep
jwhear
219
20 days ago
Jacobi Symbol
jwhear
368
20 days ago
Van Eck Sequence
jwhear
🥉
161
20 days ago
Zodiac Signs
jwhear
369
20 days ago
Diamonds
jwhear
🥉
209
20 days ago
CSS Colors
jwhear
3,132
21 days ago
Time Distance
jwhear
🥉
535
21 days ago
Emojify
jwhear
372
21 days ago
Fractions
jwhear
327
21 days ago
Ten-pin Bowling
jwhear
🥉
420
21 days ago
Fibonacci
jwhear
138
21 days ago
Levenshtein Distance
jwhear
350
21 days ago
Vampire Numbers
jwhear
1,279
21 days ago
Rule 110
jwhear
292
21 days ago
Poker
jwhear
🥉
909
21 days ago
Reverse Polish Notation
jwhear
🥉
334
21 days ago
Look and Say
jwhear
310
21 days ago
Happy Numbers
jwhear
194
21 days ago
Quine
jwhear
🥇
75
21 days ago
Evil Numbers (Long)
jwhear
117
21 days ago
Evil Numbers
jwhear
115
21 days ago
Odious Numbers (Long)
jwhear
117
21 days ago
Odious Numbers
jwhear
115
21 days ago
Musical Chords
jwhear
🥉
659
21 days ago
Christmas Trees
jwhear
259
21 days ago
United States
jwhear
🥈
234
21 days ago
Card Number Validation
RyanMHsiao
201
21 days ago
Morse Encoder
jwhear
🥉
414
21 days ago
Morse Decoder
jwhear
🥈
500
21 days ago
Arrows
jwhear
286
22 days ago
Arabic to Roman
jwhear
296
22 days ago
brainfuck
jwhear
385
22 days ago
ISBN
jwhear
230
22 days ago
Intersection
jwhear
303
22 days ago
Seven Segment
jwhear
263
22 days ago
Roman to Arabic
jwhear
308
22 days ago