Recent Solutions
Prev Hole
Play Hole
Next Hole
Achievements
Cheevos
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
Hilbert Curve
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
Mandelbrot
Maze
Medal Tally
Minesweeper
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
Topological Sort
Tower of Hanoi
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Binary Lambda Calculus
Calendar
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Multitap Input
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
Erlang
F#
Factor
Forth
Fortran
Gleam
Go
GolfScript
Groovy
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
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
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
Erlang
F#
Factor
Forth
Fortran
Gleam
Go
GolfScript
Groovy
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
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
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
Hilbert Curve
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
Mandelbrot
Maze
Medal Tally
Minesweeper
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
Topological Sort
Tower of Hanoi
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Binary Lambda Calculus
Calendar
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Multitap Input
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Happy Numbers
Lv0Sys
60
36ms
10 days ago
Happy Numbers
snoozingnewt
🥇
49
38ms
11 days ago
Happy Numbers
Babafaba
60
33ms
15 Oct 2025
Happy Numbers
fuzzylojik-golf
58
33ms
3 Sep 2025
Happy Numbers
CaedenHarper
67
42ms
31 Aug 2025
Happy Numbers
tatzyr
59
32ms
5 Apr 2025
Happy Numbers
LostSyntax21
67
54ms
8 Jan 2025
Happy Numbers
DialFrost
🥇
49
34ms
26 Dec 2024
Happy Numbers
marcoskwkm
76
32ms
14 Oct 2024
Happy Numbers
pardouin
🥇
49
32ms
29 Sep 2024
Happy Numbers
Mabeloid
112
35ms
20 Sep 2024
Happy Numbers
sean-niemann
🥇
49
32ms
9 Aug 2024
Happy Numbers
emgordon154
🥇
49
32ms
5 Aug 2024
Happy Numbers
Ralac07
101
34ms
4 Jul 2024
Happy Numbers
HumanoidCPU
112
32ms
3 May 2024
Happy Numbers
dokutan
69
32ms
14 Apr 2024
Happy Numbers
BREMAUCY
57
32ms
26 Mar 2024
Happy Numbers
olleicua
71
35ms
20 Feb 2024
Happy Numbers
SirBogman
58
31ms
10 Jan 2024
Happy Numbers
Yewzir
68
32ms
22 Dec 2023
Happy Numbers
FlyingPenguin223
62
35ms
16 Nov 2023
Happy Numbers
alexjurkiewicz
96
34ms
7 Nov 2023
Happy Numbers
xsot
🥇
49
31ms
14 Oct 2023
Happy Numbers
aaronze
71
34ms
17 Sep 2023
Happy Numbers
msbranicky
138
32ms
8 Sep 2023
Happy Numbers
Natanaelel
55
33ms
10 May 2023
Happy Numbers
ovs-code
54
41ms
9 May 2023
Happy Numbers
zt14427
330
33ms
2 May 2023
Happy Numbers
AlephSquirrel
58
39ms
14 Apr 2023
Happy Numbers
m-tkach
🥇
49
32ms
23 Feb 2023
Happy Numbers
Haksell
112
32ms
22 Feb 2023
Happy Numbers
baseconnect-akizuki
118
34ms
8 Feb 2023
Happy Numbers
aksyristos
69
42ms
31 Jan 2023
Happy Numbers
Steffan153
🥇
49
32ms
28 Jan 2023
Happy Numbers
DaCuteRaccoon
65
46ms
30 Nov 2022
Happy Numbers
OhmNomNom
59
32ms
13 Oct 2022
Happy Numbers
jared-hughes
54
31ms
9 Sep 2022
Happy Numbers
annaproxy
57
32ms
27 Aug 2022
Happy Numbers
Andriamanitra
60
34ms
20 Jul 2022
Happy Numbers
yzhs
64
33ms
20 Jul 2022
Happy Numbers
KatieLG-Transpiler
112
31ms
24 Jun 2022
Happy Numbers
Mortis66666
93
33ms
10 Jun 2022
Happy Numbers
lynn
🥇
49
35ms
25 May 2022
Happy Numbers
KatieLG
64
33ms
10 Apr 2022
Happy Numbers
orthoplex
65
33ms
30 Mar 2022
Happy Numbers
radarek
🥇
49
31ms
10 Mar 2022
Happy Numbers
Irratix
64
34ms
4 Mar 2022
Happy Numbers
stefangimmillaro
🥇
49
31ms
16 Feb 2022
Happy Numbers
MeWhenI
🥇
49
32ms
16 Feb 2022
Happy Numbers
fynnkroeger
86
33ms
30 Jan 2022
Happy Numbers
ninjawarrior1337
306
34ms
30 Nov 2021
Happy Numbers
mokymok
143
31ms
8 Nov 2021
Happy Numbers
nwellnhof
🥇
49
32ms
6 Nov 2021
Happy Numbers
olivermrose
64
32ms
27 Oct 2021
Happy Numbers
jbbarth
58
32ms
8 Oct 2021
Happy Numbers
pandapawskat
65
32ms
7 Oct 2021
Happy Numbers
janlelis
50
42ms
20 Sep 2021
Happy Numbers
Shanethegamer
59
33ms
13 Sep 2021
Happy Numbers
anter69
57
33ms
3 Aug 2021
Happy Numbers
StevenElberger
140
33ms
6 Jul 2021
Happy Numbers
gilufin
55
140ms
30 May 2021
Happy Numbers
rbviz
59
32ms
29 Mar 2021
Happy Numbers
Lydxn
🥇
49
33ms
24 Mar 2021
Happy Numbers
GrayJoKing
🥇
49
31ms
24 Mar 2021
Happy Numbers
JayXon
🥇
49
31ms
20 Feb 2021
Happy Numbers
boxjelly
109
33ms
9 Feb 2021
Happy Numbers
SnowballSH
67
31ms
31 Jan 2021
Happy Numbers
hiddicop
64
40ms
26 Jan 2021
Happy Numbers
Waffle3z
58
36ms
20 Jan 2021
Happy Numbers
jaredcrystal
86
32ms
14 Dec 2020
Happy Numbers
primo-ppcg
🥇
49
32ms
15 Nov 2020
Happy Numbers
prplz
🥇
49
32ms
6 Nov 2020
Happy Numbers
sisyphus-ppcg
🥇
49
34ms
6 Nov 2020
Happy Numbers
rrampage
121
32ms
10 Aug 2020
Happy Numbers
proton
93
33ms
10 Jun 2020