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
deancureton
146
25 days ago
Collatz
SpiritAxolotl
132
20 Mar 2024
Collatz
dokutan
🥉
126
17 Mar 2024
Collatz
Jacob385
🥉
126
4 Mar 2024
Collatz
albanian-laundromat
159
2 Mar 2024
Collatz
DialFrost
129
29 Jan 2024
Collatz
msbranicky
145
9 Jan 2024
Collatz
ravnskjaer
136
2 Jan 2024
Collatz
tigerdan2
127
19 Dec 2023
Collatz
Schmitt-Very-Cool
140
28 Nov 2023
Collatz
azka1368
138
23 Nov 2023
Collatz
Blockyheadman
132
1 Nov 2023
Collatz
MrGagnonHPS
134
1 Nov 2023
Collatz
madeforlosers
132
26 Oct 2023
Collatz
Maximizer02
138
2 Oct 2023
Collatz
bac0id
133
26 Sep 2023
Collatz
h3ra993huskp
127
17 Sep 2023
Collatz
jonah1068
162
15 Sep 2023
Collatz
plastic-bottle
127
13 Sep 2023
Collatz
crizin
136
9 Sep 2023
Collatz
aDwarfNamedUrist
150
30 Aug 2023
Collatz
Pyro569
150
20 Jul 2023
Collatz
yoshykai
131
6 Jul 2023
Collatz
hidude562
155
21 Jun 2023
Collatz
weber-hge
294
13 Jun 2023
Collatz
lukashert
129
7 Jun 2023
Collatz
Widgitty
130
29 May 2023
Collatz
atazzam
186
20 May 2023
Collatz
OriEy
135
27 Apr 2023
Collatz
Koubidoo
383
21 Mar 2023
Collatz
ToxicP1e
139
2 Mar 2023
Collatz
Geird
155
22 Feb 2023
Collatz
Yewzir
🥉
126
12 Feb 2023
Collatz
piano-miles
129
8 Feb 2023
Collatz
SiestaGuru
131
9 Jan 2023
Collatz
annaproxy
🥉
126
7 Jan 2023
Collatz
Betuaredead
🥉
126
5 Jan 2023
Collatz
retrohun
4,297
27 Dec 2022
Collatz
Luca2812
127
12 Dec 2022
Collatz
0dyse
195
11 Dec 2022
Collatz
astdefu
153
10 Dec 2022
Collatz
Bodo171
194
1 Dec 2022
Collatz
sonisonjames
171
26 Nov 2022
Collatz
bidger
153
13 Nov 2022
Collatz
cnelson20
236
12 Oct 2022
Collatz
lukemalek
153
10 Oct 2022
Collatz
kanjurer
168
29 Sep 2022
Collatz
pyuraii
149
27 Sep 2022
Collatz
FlorianCassayre
130
20 Sep 2022
Collatz
KrausRaus
🥉
126
9 Sep 2022
Collatz
eshilo-draper
137
4 Sep 2022
Collatz
78790709
🥉
126
4 Sep 2022
Collatz
Smetalo
139
25 Aug 2022
Collatz
winigo3
176
8 Aug 2022
Collatz
althryenix
134
25 Jul 2022
Collatz
xpoes123
210
25 Jul 2022
Collatz
KyleLashmet
150
18 Jul 2022
Collatz
lukehewittvandy
135
18 Jul 2022
Collatz
mStudio457
471
3 Jul 2022
Collatz
KatieLG-Transpiler
3,296
23 Jun 2022