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
Calendar
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
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
ArkScript
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
ArkScript
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
Calendar
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
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
Chars
Time
Submitted
Happy Numbers (Long)
TheZwierzLF
96
38ms
34 mins ago
Happy Numbers (Long)
KrausRaus
69
11ms
9 hours ago
Happy Numbers (Long)
dokutan
534
12ms
16 hours ago
Happy Numbers (Long)
mwarvik
570
383ms
29 hours ago
Happy Numbers (Long)
GolfingSuccess
141
10ms
30 hours ago
Happy Numbers (Long)
DialFrost
🥇
84
45ms
31 hours ago
Happy Numbers (Long)
HumanoidCPU
560
6ms
4 days ago
Happy Numbers (Long)
kg583
143
43ms
5 days ago
Happy Numbers (Long)
DialFrost
106
41ms
6 days ago
Happy Numbers (Long)
sean-niemann
🥉
61
722ms
6 days ago
Happy Numbers (Long)
FlyingPenguin223
95
2ms
8 days ago
Happy Numbers (Long)
albanian-laundromat
149
27ms
9 days ago
Happy Numbers (Long)
HumanoidCPU
317
668ms
10 days ago
Happy Numbers (Long)
dokutan
224
3ms
10 days ago
Happy Numbers (Long)
Waffle3z
95
2ms
10 days ago
Happy Numbers (Long)
blaztoma
28
69ms
11 days ago
Happy Numbers (Long)
noahdorsch
560
989ms
11 days ago
Happy Numbers (Long)
NoneTheFewer
149
39ms
11 days ago
Happy Numbers (Long)
MeWhenI
497
2ms
12 days ago
Happy Numbers (Long)
Shanethegamer
572
3ms
12 days ago
Happy Numbers (Long)
CLOStrophobic
114
564ms
12 days ago
Happy Numbers (Long)
edsrzf
74
184ms
13 days ago
Happy Numbers (Long)
albanian-laundromat
100
11ms
13 days ago
Happy Numbers (Long)
edsrzf
82
3ms
13 days ago
Happy Numbers (Long)
edsrzf
🥇
111
105ms
13 days ago
Happy Numbers (Long)
edsrzf
100
237ms
13 days ago
Happy Numbers (Long)
edsrzf
114
12ms
13 days ago
Happy Numbers (Long)
edsrzf
🥇
96
46ms
13 days ago
Happy Numbers (Long)
emgordon154
223
1,844ms
15 days ago
Happy Numbers (Long)
albanian-laundromat
🥇
129
253ms
16 days ago
Happy Numbers (Long)
TheZwierzLF
125
500ms
16 days ago
Happy Numbers (Long)
TheZwierzLF
125
84ms
16 days ago
Happy Numbers (Long)
Florian-Mt
136
24ms
17 days ago
Happy Numbers (Long)
HumanoidCPU
415
66ms
19 days ago
Happy Numbers (Long)
AlephSquirrel
25
16ms
19 days ago
Happy Numbers (Long)
gigaprofisi
123
12ms
20 days ago
Happy Numbers (Long)
Samuel-George-Greenberger
66
37ms
20 days ago
Happy Numbers (Long)
targrik
74
67ms
20 days ago
Happy Numbers (Long)
DialFrost
88
2ms
21 days ago
Happy Numbers (Long)
snoozingnewt
141
117ms
21 days ago
Happy Numbers (Long)
ravnskjaer
138
329ms
21 days ago
Happy Numbers (Long)
dokutan
222
65ms
24 days ago
Happy Numbers (Long)
dokutan
199
91ms
24 days ago
Happy Numbers (Long)
KasperKivimaeki
105
324ms
24 days ago
Happy Numbers (Long)
Lydxn
🥇
101
366ms
25 days ago
Happy Numbers (Long)
KasperKivimaeki
🥉
106
59ms
25 days ago
Happy Numbers (Long)
Yax42
98
379ms
25 days ago
Happy Numbers (Long)
tomh1012
145
424ms
25 days ago
Happy Numbers (Long)
dokutan
237
814ms
26 days ago
Happy Numbers (Long)
albanian-laundromat
113
4ms
26 days ago
Happy Numbers (Long)
kurkale6ka
564
9ms
26 days ago
Happy Numbers (Long)
JayXon
💎
103
59ms
27 days ago
Happy Numbers (Long)
ovs-code
27
3ms
27 days ago
Happy Numbers (Long)
AlephSquirrel
33
6ms
27 days ago
Happy Numbers (Long)
ovs-code
🥇
67
377ms
8 Dec 2025
Happy Numbers (Long)
albanian-laundromat
291
17ms
8 Dec 2025
Happy Numbers (Long)
HumanoidCPU
1,409
6ms
7 Dec 2025
Happy Numbers (Long)
HumanoidCPU
1,123
2ms
7 Dec 2025
Happy Numbers (Long)
HumanoidCPU
605
258ms
7 Dec 2025
Happy Numbers (Long)
GolfingSuccess
🥇
159
1,792ms
6 Dec 2025
Happy Numbers (Long)
snoozingnewt
111
387ms
5 Dec 2025
Happy Numbers (Long)
lukegustafson
62
164ms
5 Dec 2025
Happy Numbers (Long)
Lv0Sys
60
39ms
5 Dec 2025
Happy Numbers (Long)
Lv0Sys
119
148ms
5 Dec 2025
Happy Numbers (Long)
Lv0Sys
67
385ms
5 Dec 2025
Happy Numbers (Long)
Lv0Sys
72
12ms
5 Dec 2025
Happy Numbers (Long)
Lv0Sys
85
28ms
5 Dec 2025
Happy Numbers (Long)
FortuiteMan
🥉
169
181ms
5 Dec 2025
Happy Numbers (Long)
FortuiteMan
82
290ms
5 Dec 2025
Happy Numbers (Long)
Mukundan314
63
156ms
5 Dec 2025
Happy Numbers (Long)
HPWiz
72
142ms
5 Dec 2025
Happy Numbers (Long)
snoozingnewt
74
162ms
5 Dec 2025
Happy Numbers (Long)
ryyyn
77
130ms
4 Dec 2025
Happy Numbers (Long)
Andrey2001
86
13ms
4 Dec 2025
Happy Numbers (Long)
ian-h-chamberlain
127
117ms
4 Dec 2025
Happy Numbers (Long)
4atj
72
145ms
4 Dec 2025
Happy Numbers (Long)
JOrE20
70
21ms
4 Dec 2025
Happy Numbers (Long)
DialFrost
64
6ms
4 Dec 2025
Happy Numbers (Long)
Seek64
73
166ms
4 Dec 2025
Happy Numbers (Long)
sunleonid
🥇
61
146ms
4 Dec 2025