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
ROT13
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
Gleam
Go
GolfScript
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lua
Nim
OCaml
Pascal
Perl
PHP
PowerShell
Prolog
Python
R
Raku
Rockstar
Rockstar 2
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
Gleam
Go
GolfScript
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lua
Nim
OCaml
Pascal
Perl
PHP
PowerShell
Prolog
Python
R
Raku
Rockstar
Rockstar 2
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
ROT13
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
Rijndael S-box
MostParsingVex
169
8 hours ago
12 Days of Christmas
Aditya-A-Thakkar
2,417
17 hours ago
Game of Life
Re-Adventures
477
18 hours ago
Hexdump
Re-Adventures
350
18 hours ago
Polyominoes
ovs-code
💎
228
2 days ago
Levenshtein Distance
edsrzf
250
2 days ago
ROT13
elgan65536
148
3 days ago
Look and Say
acotis
253
4 days ago
𝑒
madeforlosers
1,023
5 days ago
Fibonacci
Maximizer02
73
5 days ago
ROT13
stefangimmillaro
126
5 days ago
Abundant Numbers
itljan30
87
6 days ago
Abundant Numbers (Long)
itljan30
88
6 days ago
CSS Colors
acotis
2,249
6 days ago
ROT13
cyrilboyer
195
6 days ago
Christmas Trees
acotis
98
6 days ago
Quine
edsrzf
110
7 days ago
Catalan Numbers
lynn
🥈
148
7 days ago
Catalan Numbers
acotis
🥉
150
7 days ago
Mahjong
cyrilboyer
🦄
1,639
7 days ago
Fizz Buzz
pjpringle
365
7 days ago
Emirp Numbers
acotis
107
8 days ago
24 Game
acotis
383
8 days ago
Leyland Numbers
Shanethegamer
906
8 days ago
ASCII Table
acotis
150
8 days ago
Arrows
acotis
249
8 days ago
Ascending Primes
acotis
🥉
105
9 days ago
12 Days of Christmas
acotis
499
9 days ago
Abundant Numbers
acotis
84
9 days ago
Abundant Numbers (Long)
acotis
85
9 days ago
Prime Numbers
acotis
🥇
61
9 days ago
Pernicious Numbers
acotis
69
9 days ago
CSS Colors
JayXon
💎
673
10 days ago
Zodiac Signs
JayXon
💎
225
10 days ago
Fibonacci
acotis
65
10 days ago
Arabic to Roman
lynn
201
10 days ago
Arabic to Roman
acotis
248
10 days ago
Forsyth–Edwards Notation
acotis
🥈
226
10 days ago
Zeckendorf Representation
klixel
259
10 days ago
Rijndael S-box
Alex-x90
160
10 days ago
ROT13
Siri-chan
201
11 days ago
Day of Week
acotis
350
11 days ago
Arithmetic Numbers
acotis
107
11 days ago
Pangram Grep
Pale-Vessel
114
11 days ago
Fibonacci
Siri-chan
102
11 days ago
Abundant Numbers (Long)
Pale-Vessel
86
11 days ago
Fizz Buzz
yupiel
114
11 days ago
ROT13
JayXon
💎
116
12 days ago
ROT13
msbranicky
354
13 days ago
ROT13
acotis
🥉
122
13 days ago
ROT13
lynn
🥈
118
14 days ago
Odious Numbers
nullie
66
14 days ago
Ordinal Numbers
nullie
157
14 days ago
𝑒
Fishyfii
1,026
14 days ago
ROT13
rucin93
184
15 days ago
Leap Years
elituf
76
15 days ago
Abundant Numbers (Long)
elituf
🥇
79
15 days ago
Abundant Numbers
elituf
78
15 days ago
12 Days of Christmas
elituf
542
15 days ago
ROT13
madex
197
16 days ago
Fizz Buzz
elituf
131
16 days ago
π
elituf
1,023
16 days ago
Intersection
nullie
211
16 days ago
π
AidanWalter
1,025
17 days ago
Pangram Grep
Artemis21
105
19 days ago
Christmas Trees
nullie
94
19 days ago
Pangram Grep
nullie
111
19 days ago
Look and Say
nullie
200
19 days ago
Evil Numbers
nullie
66
19 days ago
ASCII Table
nullie
162
19 days ago
Fizz Buzz
Pale-Vessel
144
20 days ago
Catalan Numbers
nullie
172
20 days ago
Leap Years
nullie
63
20 days ago
Arabic to Roman
KatieLG
384
21 days ago
Sierpiński Triangle
HumanoidCPU
283
21 days ago