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
Common Lisp
Crystal
D
Dart
Elixir
F#
Factor
Forth
Fortran
Go
GolfScript
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
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
Common Lisp
Crystal
D
Dart
Elixir
F#
Factor
Forth
Fortran
Go
GolfScript
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
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
Chars
Submitted
Leyland Numbers
KasperKivimaeki
132
7 hours ago
PalindromemordnilaP
KasperKivimaeki
123
8 hours ago
Diamonds
NicknamedTwice
113
46 hours ago
Billiards
pardouin
🥉
165
2 days ago
Billiards
saito-ta
💎
146
2 days ago
Billiards
ovs-code
🥈
148
2 days ago
Billiards
KasperKivimaeki
187
3 days ago
Billiards
KatieLG
14,326
3 days ago
Roman to Arabic
SebastianoTaddei
237
3 days ago
Jacobi Symbol
lifthrasiir
147
4 days ago
Billiards
sean-niemann
168
4 days ago
Prime Numbers (Long)
somT-oss
359
4 days ago
Prime Numbers
somT-oss
357
4 days ago
Rijndael S-box
ovs-code
133
4 days ago
Fizz Buzz
orbanbalage
177
4 days ago
Reverse Polish Notation
08jne01
331
5 days ago
Prime Numbers
Yax42
68
5 days ago
Divisors
Yax42
74
5 days ago
Leap Years
Yax42
64
5 days ago
Arithmetic Numbers
Yax42
102
5 days ago
Abundant Numbers (Long)
Yax42
86
5 days ago
ASCII Table
Yax42
126
5 days ago
Fizz Buzz
Yax42
89
5 days ago
Fibonacci
Yax42
56
5 days ago
Pernicious Numbers
FlyingPenguin223
50
6 days ago
brainfuck
iilegacyyii
314
6 days ago
Zeckendorf Representation
DialFrost
107
6 days ago
π
croc54
187
7 days ago
Fibonacci
IdkWhatIsIdk
77
7 days ago
Collatz
somT-oss
432
7 days ago
Fizz Buzz
somT-oss
400
7 days ago
γ
ovs-code
286
9 days ago
Smith Numbers
ovs-code
106
9 days ago
Polyominoes
ovs-code
💎
165
9 days ago
ln 2
ovs-code
153
9 days ago
Catalan Numbers
ovs-code
140
9 days ago
φ
ovs-code
💎
109
9 days ago
Maze
emgordon154
267
9 days ago
Ordinal Numbers
emgordon154
126
9 days ago
Fractions
emgordon154
130
9 days ago
Card Number Validation
emgordon154
101
9 days ago
Seven Segment
emgordon154
165
9 days ago
Jacobi Symbol
emgordon154
238
9 days ago
Niven Numbers (Long)
emgordon154
76
9 days ago
Recamán
emgordon154
112
9 days ago
Evil Numbers (Long)
emgordon154
56
9 days ago
Evil Numbers
emgordon154
54
9 days ago
Odious Numbers
emgordon154
53
9 days ago
Odious Numbers (Long)
emgordon154
54
9 days ago
Roman to Arabic
masinag
164
9 days ago
√2
KasperKivimaeki
🥉
112
9 days ago
φ
KasperKivimaeki
113
9 days ago
φ
DialFrost
114
9 days ago
Billiards
GolfingSuccess
170
10 days ago
Fibonacci
kivibot
48
10 days ago
Fizz Buzz
kivibot
77
10 days ago
brainfuck
PurkkaKoodari
174
10 days ago
Catalan’s Constant
KasperKivimaeki
🥈
138
10 days ago
Sierpiński Triangle
Herbert00709
78
10 days ago
Vampire Numbers
KasperKivimaeki
236
11 days ago
Pascal’s Triangle
viitanet
105
11 days ago
Fibonacci
madeforlosers
56
12 days ago
π
madex
144
12 days ago
Fizz Buzz
nemulilonala
433
12 days ago
Happy Numbers (Long)
GWStuart
170
12 days ago
Happy Numbers
GWStuart
169
12 days ago
99 Bottles of Beer
urojony
250
12 days ago
12 Days of Christmas
BlankSpruce
🥈
250
13 days ago
Emirp Numbers (Long)
GWStuart
183
13 days ago
Emirp Numbers
GWStuart
182
13 days ago
Catalan Numbers
GWStuart
2,635
13 days ago
Arithmetic Numbers
GWStuart
148
13 days ago
Recamán
KasperKivimaeki
73
13 days ago
Game of Life
JayXon
🥈
105
13 days ago
Kaprekar Numbers
JohandeRuiter
81
13 days ago