Recent Solutions
Prev Hole
Play Hole
Next Hole
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
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
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++
Clojure
COBOL
Coconut
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
Rockstar
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++
Clojure
COBOL
Coconut
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
Rockstar
Ruby
Rust
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
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
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
Collatz
dokutan
79
33 mins ago
Collatz
dokutan
75
37 mins ago
Collatz
dokutan
72
38 mins ago
Collatz
dokutan
74
38 mins ago
Collatz
huccling
86
an hour ago
Collatz
deadp4nda
90
a day ago
Collatz
gurglemurgle5
125
a day ago
Collatz
Stockoh
9,008
a day ago
Collatz
sidok
77
a day ago
Collatz
carlosbviteri
208
2 days ago
Collatz
aalec
95
2 days ago
Collatz
Phyisis
88
3 days ago
Collatz
HumanoidCPU
77
3 days ago
Collatz
HumanoidCPU
79
3 days ago
Collatz
dokutan
1,835
5 days ago
Collatz
Maximizer02
98
9 days ago
Collatz
Flying-Toast
77
10 days ago
Collatz
ovs-code
74
10 days ago
Collatz
Jacob385
18,326
11 days ago
Collatz
mrmena
100
11 days ago
Collatz
arctouch-cristiannevianna
121
12 days ago
Collatz
Alex-Huggett
70
12 days ago
Collatz
dokutan
1,219
13 days ago
Collatz
dokutan
1,217
13 days ago
Collatz
jtaxen
98
13 days ago
Collatz
Alex-Huggett
122
13 days ago
Collatz
Alex-Huggett
94
13 days ago
Collatz
Alex-Huggett
178
13 days ago
Collatz
Alex-Huggett
81
13 days ago
Collatz
Alex-Huggett
109
13 days ago
Collatz
Alex-Huggett
157
13 days ago
Collatz
Alex-Huggett
153
13 days ago
Collatz
Alex-Huggett
98
14 days ago
Collatz
Alex-Huggett
80
14 days ago
Collatz
HETHAT
73
15 days ago
Collatz
truisseaux
70
15 days ago
Collatz
robertoman37
81
16 days ago
Collatz
77Tigers
104
18 days ago
Collatz
Mandrzejy
77
18 days ago
Collatz
AdrienHache
🥇
46
18 days ago
Collatz
SniperSmiley
71
19 days ago
Collatz
Yewzir
73
22 days ago
Collatz
Yewzir
73
22 days ago
Collatz
dokutan
97
23 days ago
Collatz
Jacob385
78
23 days ago
Collatz
thienudomsrirungruang
83
25 days ago
Collatz
sqrteipi
103
25 days ago
Collatz
ashtraypettingzoo
80
26 days ago
Collatz
jtaxen
70
26 days ago
Collatz
KatieLG
3,249
26 days ago
Collatz
KatieLG
1,183
27 days ago
Collatz
KatieLG
3,308
29 Mar 2024
Collatz
retrohun
79
29 Mar 2024
Collatz
tik25
148
28 Mar 2024
Collatz
tik25
126
28 Mar 2024
Collatz
tik25
117
28 Mar 2024
Collatz
tik25
86
28 Mar 2024
Collatz
dokutan
1,247
28 Mar 2024
Collatz
Yewzir
79
28 Mar 2024
Collatz
dokutan
1,253
27 Mar 2024