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
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
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
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Tower of Hanoi
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
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
Erlang
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
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
Erlang
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
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
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Tower of Hanoi
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Happy Numbers
albanian-laundromat
133
248ms
2 days ago
Happy Numbers
JOrE20
671
254ms
4 days ago
Happy Numbers
CaedenHarper
129
263ms
14 days ago
Happy Numbers
Babafaba
156
263ms
26 days ago
Happy Numbers
KasperKivimaeki
115
261ms
2 Oct 2025
Happy Numbers
kmathis22
142
248ms
29 Sep 2025
Happy Numbers
InigoK
181
255ms
20 Sep 2025
Happy Numbers
blaztoma
177
249ms
5 Sep 2025
Happy Numbers
fuzzylojik-golf
100
261ms
3 Sep 2025
Happy Numbers
dbut2
121
267ms
15 Jul 2025
Happy Numbers
RaBa21
190
257ms
10 Jul 2025
Happy Numbers
targrik
163
270ms
1 Jul 2025
Happy Numbers
0xjac
136
267ms
7 Jun 2025
Happy Numbers
heanyang1
174
254ms
29 May 2025
Happy Numbers
BREMAUCY
154
274ms
21 May 2025
Happy Numbers
keelimeguy
101
266ms
28 Apr 2025
Happy Numbers
plcc0
100
277ms
21 Mar 2025
Happy Numbers
JunkIce
103
257ms
23 Feb 2025
Happy Numbers
sean-niemann
94
285ms
20 Feb 2025
Happy Numbers
yhm138
359
268ms
18 Feb 2025
Happy Numbers
error256
100
254ms
15 Feb 2025
Happy Numbers
acotis
192
255ms
6 Feb 2025
Happy Numbers
olleicua
188
275ms
23 Jan 2025
Happy Numbers
emgordon154
100
269ms
17 Jan 2025
Happy Numbers
LostSyntax21
148
258ms
8 Jan 2025
Happy Numbers
AidanWalter
410
253ms
2 Jan 2025
Happy Numbers
DialFrost
114
248ms
26 Dec 2024
Happy Numbers
adamnielson42
194
257ms
3 Dec 2024
Happy Numbers
edsrzf
101
263ms
26 Oct 2024
Happy Numbers
Mabeloid
190
259ms
20 Sep 2024
Happy Numbers
madeforlosers
158
249ms
13 Sep 2024
Happy Numbers
HumanoidCPU
206
260ms
26 Aug 2024
Happy Numbers
pardouin
106
272ms
24 Aug 2024
Happy Numbers
Steffan153
🥉
93
318ms
9 Aug 2024
Happy Numbers
rifatx
202
244ms
17 Jul 2024
Happy Numbers
Jacob385
159
262ms
10 Jul 2024
Happy Numbers
Ralac07
400
284ms
18 Jun 2024
Happy Numbers
dokutan
131
272ms
1 Apr 2024
Happy Numbers
hrubymar10
133
259ms
27 Feb 2024
Happy Numbers
jared-hughes
101
255ms
27 Feb 2024
Happy Numbers
bastatom
131
267ms
25 Feb 2024
Happy Numbers
neihousaigaai
146
264ms
14 Feb 2024
Happy Numbers
snoozingnewt
147
264ms
4 Feb 2024
Happy Numbers
yuchuehw
180
257ms
28 Jan 2024
Happy Numbers
xbxbxb007
222
262ms
10 Jan 2024
Happy Numbers
kkoenig
102
251ms
5 Jan 2024
Happy Numbers
m-tkach
110
269ms
5 Dec 2023
Happy Numbers
jupj
175
260ms
13 Nov 2023
Happy Numbers
hotmanga
222
259ms
7 Nov 2023
Happy Numbers
mpldr
218
266ms
31 Oct 2023
Happy Numbers
Yewzir
100
260ms
26 Oct 2023
Happy Numbers
arctouch-cristiannevianna
146
272ms
19 Oct 2023
Happy Numbers
SB-945
193
253ms
24 Sep 2023
Happy Numbers
jacobly0
204
256ms
11 Sep 2023
Happy Numbers
msbranicky
102
266ms
8 Sep 2023
Happy Numbers
MeWhenI
95
266ms
22 Aug 2023
Happy Numbers
stefangimmillaro
94
270ms
21 Aug 2023
Happy Numbers
adriweb
222
273ms
17 Aug 2023
Happy Numbers
Schmitt-Very-Cool
190
269ms
2 Aug 2023
Happy Numbers
Adix-null
601
266ms
30 Jul 2023
Happy Numbers
jmerle
157
263ms
6 Jul 2023
Happy Numbers
TaserTheFox
159
266ms
1 Jun 2023
Happy Numbers
zakariamouhid
253
263ms
20 May 2023
Happy Numbers
5cw
215
273ms
22 Apr 2023
Happy Numbers
commandblockguy
190
263ms
16 Apr 2023
Happy Numbers
Narik1
169
264ms
3 Apr 2023
Happy Numbers
Shanethegamer
100
260ms
29 Mar 2023
Happy Numbers
zt14427
208
261ms
4 Mar 2023
Happy Numbers
neel11235813
185
254ms
4 Mar 2023
Happy Numbers
GolfingSuccess
188
265ms
25 Jan 2023
Happy Numbers
Betuaredead
162
267ms
19 Jan 2023
Happy Numbers
andersk
154
266ms
17 Jan 2023
Happy Numbers
kimbo
145
256ms
12 Jan 2023
Happy Numbers
retrohun
190
254ms
27 Dec 2022
Happy Numbers
Msleizak
363
252ms
13 Dec 2022