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
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Multitap Input
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
ArkScript
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
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Bytes
Chars
Scoring
Bytes
Chars
Language
All
><>
ALGOL 68
ArkScript
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
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
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
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Multitap Input
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Happy Numbers
jusaka
148
10ms
19 hours ago
Happy Numbers
madex
76
10ms
4 days ago
Happy Numbers
Program-Pi
81
10ms
26 Feb 2026
Happy Numbers
JOrE20
67
11ms
25 Feb 2026
Happy Numbers
KrausRaus
68
10ms
6 Jan 2026
Happy Numbers
Lv0Sys
66
10ms
29 Nov 2025
Happy Numbers
snoozingnewt
71
12ms
29 Nov 2025
Happy Numbers
smclaughlin-cf
100
12ms
26 Nov 2025
Happy Numbers
Yax42
73
9ms
12 Nov 2025
Happy Numbers
HumanoidCPU
84
10ms
11 Nov 2025
Happy Numbers
Andrey-Plotnikov
89
12ms
27 Sep 2025
Happy Numbers
CaedenHarper
85
13ms
31 Aug 2025
Happy Numbers
acollett89
82
10ms
4 Aug 2025
Happy Numbers
lukegustafson
🥇
51
9ms
18 Jul 2025
Happy Numbers
Protothor
70
10ms
9 Jul 2025
Happy Numbers
codewrite
89
12ms
30 Jun 2025
Happy Numbers
gigaprofisi
113
10ms
20 Jun 2025
Happy Numbers
XenThe
79
12ms
7 Jun 2025
Happy Numbers
a6166231
95
10ms
20 May 2025
Happy Numbers
MyXoToD
159
12ms
8 May 2025
Happy Numbers
Palladium02
104
13ms
5 May 2025
Happy Numbers
MrMullac
120
14ms
2 May 2025
Happy Numbers
TRexOnGit
70
10ms
2 May 2025
Happy Numbers
targrik
63
10ms
19 Feb 2025
Happy Numbers
sean-niemann
56
11ms
18 Jan 2025
Happy Numbers
Salutations45
90
10ms
2 Jan 2025
Happy Numbers
dokutan
79
15ms
24 Dec 2024
Happy Numbers
alexsave
92
14ms
7 Nov 2024
Happy Numbers
madeforlosers
79
19ms
23 Oct 2024
Happy Numbers
roguh
137
9ms
13 Oct 2024
Happy Numbers
FortuiteMan
80
15ms
10 Oct 2024
Happy Numbers
LukeBridges
93
16ms
8 Oct 2024
Happy Numbers
xyangst
107
11ms
7 Oct 2024
Happy Numbers
Mabeloid
146
12ms
20 Sep 2024
Happy Numbers
Steffan153
56
10ms
9 Aug 2024
Happy Numbers
ovs-code
66
11ms
29 Jul 2024
Happy Numbers
helbling
76
11ms
4 Jul 2024
Happy Numbers
bac0id
125
9ms
30 Jun 2024
Happy Numbers
r-schmidtke
103
10ms
26 Jun 2024
Happy Numbers
hacker112
115
17ms
20 Jun 2024
Happy Numbers
vlpx
62
12ms
18 Jun 2024
Happy Numbers
Ranner198
156
11ms
13 Jun 2024
Happy Numbers
junkondo-jp
86
11ms
13 May 2024
Happy Numbers
rucin93
62
11ms
19 Apr 2024
Happy Numbers
two-bad
72
12ms
25 Feb 2024
Happy Numbers
steffan-polygolf
103
10ms
19 Feb 2024
Happy Numbers
olleicua
109
12ms
13 Feb 2024
Happy Numbers
dylanarmstrong
78
11ms
24 Jan 2024
Happy Numbers
itserasmus
146
14ms
17 Jan 2024
Happy Numbers
Yewzir
65
9ms
6 Dec 2023
Happy Numbers
trinityy-7
83
10ms
6 Dec 2023
Happy Numbers
janbehrens
65
9ms
26 Nov 2023
Happy Numbers
Florian-Mt
131
11ms
23 Oct 2023
Happy Numbers
coreynash
85
12ms
17 Oct 2023
Happy Numbers
Davr1
92
13ms
14 Oct 2023
Happy Numbers
m42km
80
10ms
7 Oct 2023
Happy Numbers
msbranicky
141
10ms
8 Sep 2023
Happy Numbers
raszpi
99
10ms
3 Sep 2023
Happy Numbers
weliveinhell
74
11ms
3 Sep 2023
Happy Numbers
daniel-cardone
91
10ms
23 Aug 2023
Happy Numbers
biocommando
82
11ms
22 Aug 2023
Happy Numbers
apokryfos
115
9ms
21 Aug 2023
Happy Numbers
typeswitch-dev
105
10ms
1 Aug 2023
Happy Numbers
Maznek
71
10ms
19 Jun 2023
Happy Numbers
adamnielson42
110
10ms
30 May 2023
Happy Numbers
tayloia
65
10ms
11 May 2023
Happy Numbers
zakariamouhid
96
12ms
1 May 2023
Happy Numbers
Shanethegamer
69
10ms
25 Apr 2023
Happy Numbers
nati047
255
12ms
7 Apr 2023
Happy Numbers
Mazn3k
84
10ms
15 Mar 2023
Happy Numbers
piano-miles
85
10ms
12 Mar 2023
Happy Numbers
hacker19374
113
10ms
10 Mar 2023
Happy Numbers
JayXon
56
9ms
9 Mar 2023
Happy Numbers
zt14427
146
9ms
4 Mar 2023
Happy Numbers
amiralitaheri
90
10ms
23 Feb 2023
Happy Numbers
SirFireball3521
71
9ms
28 Jan 2023
Happy Numbers
dmrichwa
63
13ms
28 Jan 2023
Happy Numbers
DialFrost
65
11ms
28 Jan 2023
Happy Numbers
inventshah
73
10ms
28 Jan 2023
Happy Numbers
owen-c-parker
119
11ms
25 Jan 2023