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
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
Bytes
Submitted
Happy Numbers
yashima
188
21 Oct 2024
Happy Numbers
Mabeloid
210
20 Sep 2024
Happy Numbers
ravnskjaer
165
11 Sep 2024
Happy Numbers
syspro86
200
31 Jul 2024
Happy Numbers
Jacob385
145
19 Jul 2024
Happy Numbers
bac0id
192
30 Jun 2024
Happy Numbers
HumanoidCPU
200
13 May 2024
Happy Numbers
luca1339
207
9 May 2024
Happy Numbers
oeL87
279
29 Apr 2024
Happy Numbers
dokutan
146
22 Jan 2024
Happy Numbers
theunofficialcoder
324
21 Jan 2024
Happy Numbers
xbxbxb007
178
11 Jan 2024
Happy Numbers
msbranicky
187
9 Jan 2024
Happy Numbers
h3ra993huskp
🥇
126
20 Dec 2023
Happy Numbers
PierceZ
818
29 Nov 2023
Happy Numbers
janbehrens
134
26 Nov 2023
Happy Numbers
jonah1068
214
15 Sep 2023
Happy Numbers
Shanethegamer
174
13 Sep 2023
Happy Numbers
Schmitt-Very-Cool
174
22 Jun 2023
Happy Numbers
yoshykai
311
31 May 2023
Happy Numbers
benradclyffe
194
15 May 2023
Happy Numbers
zt14427
215
2 May 2023
Happy Numbers
Yewzir
135
23 Apr 2023
Happy Numbers
oganaa
559
6 Feb 2023
Happy Numbers
DialFrost
🥇
126
22 Jan 2023
Happy Numbers
retrohun
210
27 Dec 2022
Happy Numbers
sonisonjames
197
11 Dec 2022
Happy Numbers
DaCuteRaccoon
322
30 Nov 2022
Happy Numbers
Steffan153
🥇
126
30 Nov 2022
Happy Numbers
stefangimmillaro
🥇
126
17 Jul 2022
Happy Numbers
KatieLG-Transpiler
177
23 Jun 2022
Happy Numbers
inventshah
146
17 Jun 2022
Happy Numbers
KatieLG
174
22 May 2022
Happy Numbers
Natanaelel
165
31 Mar 2022
Happy Numbers
bwat2
239
10 Mar 2022
Happy Numbers
jared-hughes
132
15 Feb 2022
Happy Numbers
tejokumar
496
22 Jan 2022
Happy Numbers
Irratix
147
11 Dec 2021
Happy Numbers
sean-niemann
🥇
126
2 Dec 2021
Happy Numbers
mokymok
200
9 Nov 2021
Happy Numbers
MeWhenI
🥇
126
21 Sep 2021
Happy Numbers
cbrt-x
162
1 Sep 2021
Happy Numbers
primo-ppcg
🥇
126
23 Jun 2021
Happy Numbers
Lydxn
🥇
126
29 May 2021
Happy Numbers
JayXon
🥇
126
26 May 2021
Happy Numbers
neihousaigaai
152
8 May 2021
Happy Numbers
melikebuyruk
180
22 Mar 2021
Happy Numbers
Re-Adventures
157
8 Mar 2021
Happy Numbers
boxjelly
153
17 Feb 2021
Happy Numbers
baumpilz
171
17 Dec 2020
Happy Numbers
xkacer
128
20 Nov 2020
Happy Numbers
prplz
130
24 Oct 2020
Happy Numbers
nwellnhof
🥇
126
17 Oct 2020
Happy Numbers
ScottHamper
🥇
126
16 Oct 2020
Happy Numbers
jiaminglimjm
208
4 Jul 2020
Happy Numbers
Grimmjow91
344
3 Jun 2020
Happy Numbers
gianlab
369
30 Apr 2020