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
Partition Numbers
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
Scrambled Sort
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars GPT
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Transpose Sentence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Mandelbrot
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
Trinomial Triangle
Turtle
Tutorial
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
Ruby
Rust
Scheme
sed
SQL
Swift
Tcl
TeX
V
VimL
Wren
Zig
05AB1E
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Groovy
Harbour
Hare
Haxe
Hush
Hy
iogii
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Vyxal
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
Ruby
Rust
Scheme
sed
SQL
Swift
Tcl
TeX
V
VimL
Wren
Zig
Experimental Language
05AB1E
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Groovy
Harbour
Hare
Haxe
Hush
Hy
iogii
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Vyxal
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
Partition Numbers
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
Scrambled Sort
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars GPT
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Transpose Sentence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Mandelbrot
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
Happy Numbers
123mjb
111
15 hours ago
Happy Numbers
albanian-laundromat
79
2 days ago
Happy Numbers
edsrzf
67
3 days ago
Happy Numbers
dokutan
111
4 days ago
Happy Numbers
jipsong
79
5 days ago
Happy Numbers
gigaprofisi
113
6 days ago
Happy Numbers
Flekay
88
7 days ago
Happy Numbers
albanian-laundromat
85
8 days ago
Happy Numbers
folicore
156
8 days ago
Happy Numbers
me42th
182
10 days ago
Happy Numbers
xvogt
39
11 days ago
Happy Numbers
Jigglypuffed
57
11 days ago
Happy Numbers
acollett89
107
13 days ago
Happy Numbers
ffelixm
92
14 days ago
Happy Numbers
ffelixm
103
14 days ago
Happy Numbers
mossiegoat
98
14 days ago
Happy Numbers
Protothor
130
15 days ago
Happy Numbers
AlephSquirrel
36
16 days ago
Happy Numbers
perlebach
91
16 days ago
Happy Numbers
strogor
132
17 days ago
Happy Numbers
0xjac
137
18 days ago
Happy Numbers
XenThe
79
19 days ago
Happy Numbers
albanian-laundromat
115
19 days ago
Happy Numbers
olleicua
346
20 days ago
Happy Numbers
sean-niemann
🥇
87
20 days ago
Happy Numbers
pogwolfe
134
22 days ago
Happy Numbers
jaxmattfair
133
22 days ago
Happy Numbers
sean-niemann
🥇
49
22 days ago
Happy Numbers
IISResetMe
87
24 days ago
Happy Numbers
Lv0Sys
74
26 days ago
Happy Numbers
Natanaelel
74
26 days ago
Happy Numbers
Shanethegamer
114
27 days ago
Happy Numbers
josh-h-90
112
27 days ago
Happy Numbers
fuzzylojik-golf
61
27 days ago
Happy Numbers
heanyang1
174
29 May 2025
Happy Numbers
lyphyser
14
28 May 2025
Happy Numbers
Shanethegamer
154
27 May 2025
Happy Numbers
Shanethegamer
86
26 May 2025
Happy Numbers
Shanethegamer
86
26 May 2025
Happy Numbers
emgordon154
101
26 May 2025
Happy Numbers
Lv0Sys
88
26 May 2025
Happy Numbers
Lv0Sys
74
26 May 2025
Happy Numbers
Lv0Sys
88
26 May 2025
Happy Numbers
Shanethegamer
55
26 May 2025
Happy Numbers
TheZwierzLF
125
25 May 2025
Happy Numbers
Shanethegamer
49
25 May 2025
Happy Numbers
WillowWispy
119
25 May 2025
Happy Numbers
Shanethegamer
95
25 May 2025
Happy Numbers
Shanethegamer
45
25 May 2025
Happy Numbers
Shanethegamer
38
24 May 2025
Happy Numbers
damoose717
119
23 May 2025
Happy Numbers
fuzzylojik-golf
🥇
62
22 May 2025
Happy Numbers
40fied4t
108
21 May 2025
Happy Numbers
Shanethegamer
86
21 May 2025
Happy Numbers
kbeat
107
21 May 2025
Happy Numbers
BREMAUCY
154
21 May 2025
Happy Numbers
a6166231
95
20 May 2025
Happy Numbers
sean-niemann
🥇
91
19 May 2025
Happy Numbers
ovs-code
38
19 May 2025
Happy Numbers
Shanethegamer
34
19 May 2025
Happy Numbers
KatieLG
73
19 May 2025
Happy Numbers
stefangimmillaro
🥇
87
18 May 2025
Happy Numbers
Shanethegamer
132
17 May 2025
Happy Numbers
kistlerf
105
16 May 2025
Happy Numbers
Shanethegamer
106
11 May 2025
Happy Numbers
madeforlosers
119
9 May 2025
Happy Numbers
sean-niemann
99
9 May 2025
Happy Numbers
MyXoToD
159
8 May 2025
Happy Numbers
bzijlema
🥇
62
6 May 2025
Happy Numbers
Shanethegamer
128
6 May 2025
Happy Numbers
Palladium02
104
5 May 2025
Happy Numbers
kg583
🥇
83
3 May 2025
Happy Numbers
Briseglace
122
2 May 2025
Happy Numbers
plcc0
16
2 May 2025
Happy Numbers
MrMullac
120
2 May 2025