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
Rule 110
cthierfelder
176
11ms
5 days ago
Rule 110
davecame
68
10ms
6 days ago
Rule 110
Emutis
146
13ms
10 days ago
Rule 110
snoozingnewt
81
12ms
13 days ago
Rule 110
ryyyn
97
15ms
14 days ago
Rule 110
Babafaba
90
12ms
25 days ago
Rule 110
luuumine
103
11ms
17 Oct 2025
Rule 110
mossiegoat
126
34ms
10 Oct 2025
Rule 110
blaztoma
99
11ms
20 Sep 2025
Rule 110
davidludwik2370
475
22ms
17 Sep 2025
Rule 110
islptng
162
21ms
30 Aug 2025
Rule 110
Upload-and-View
243
21ms
26 Aug 2025
Rule 110
InigoK
90
14ms
22 Aug 2025
Rule 110
wobblybits
156
44ms
16 Aug 2025
Rule 110
CaedenHarper
105
15ms
12 Aug 2025
Rule 110
qpwoeirut
98
11ms
11 Aug 2025
Rule 110
emgordon154
62
9ms
3 Aug 2025
Rule 110
Zhenyu-Bo
199
18ms
1 Aug 2025
Rule 110
SectorCorruptor
10,112
14ms
24 Jul 2025
Rule 110
wuduculfre
82
13ms
22 Jul 2025
Rule 110
RaBa21
108
13ms
12 Jul 2025
Rule 110
Flekay
142
17ms
10 Jul 2025
Rule 110
KasperKivimaeki
115
15ms
7 Jul 2025
Rule 110
ndren
72
10ms
5 Jul 2025
Rule 110
cefqrn
69
10ms
3 Jul 2025
Rule 110
cros107
78
13ms
29 Jun 2025
Rule 110
edsrzf
70
13ms
18 Jun 2025
Rule 110
Alban-Boissard
125
11ms
14 Jun 2025
Rule 110
moustave
90
9ms
4 Jun 2025
Rule 110
Lv0Sys
162
17ms
30 May 2025
Rule 110
kistlerf
124
16ms
28 May 2025
Rule 110
nooberitess
145
25ms
22 May 2025
Rule 110
khvdm
🥇
59
12ms
26 Apr 2025
Rule 110
plcc0
84
32ms
25 Apr 2025
Rule 110
4atj
68
10ms
22 Apr 2025
Rule 110
albanian-laundromat
77
16ms
20 Apr 2025
Rule 110
WillowWispy
166
14ms
23 Mar 2025
Rule 110
Pyroan
110
11ms
12 Mar 2025
Rule 110
sean-niemann
🥇
59
12ms
10 Mar 2025
Rule 110
andrewjc2000
118
10ms
8 Mar 2025
Rule 110
jameswmccarty
154
17ms
6 Mar 2025
Rule 110
ahmetdemirag
108
32ms
5 Mar 2025
Rule 110
ZakkkkAttackkkk
62
11ms
20 Feb 2025
Rule 110
HumanoidCPU
92
16ms
17 Feb 2025
Rule 110
CornerMercury
85
16ms
15 Feb 2025
Rule 110
CLOStrophobic
310
17ms
4 Feb 2025
Rule 110
Seek64
62
11ms
30 Jan 2025
Rule 110
itljan30
141
11ms
30 Jan 2025
Rule 110
kg583
🥇
59
15ms
30 Jan 2025
Rule 110
zacjl
70
12ms
30 Jan 2025
Rule 110
JunkIce
97
18ms
24 Jan 2025
Rule 110
Artemis21
82
26ms
10 Jan 2025
Rule 110
AidanWalter
10,112
15ms
3 Jan 2025
Rule 110
croc54
168
11ms
16 Dec 2024
Rule 110
snydej
81
15ms
21 Nov 2024
Rule 110
lifthrasiir
61
14ms
21 Nov 2024
Rule 110
wh3n3v3r
97
20ms
20 Nov 2024
Rule 110
fourth-bit
113
18ms
11 Nov 2024
Rule 110
Stockoh
154
31ms
31 Oct 2024
Rule 110
jatloe
93
34ms
28 Oct 2024
Rule 110
bizy-coder
81
10ms
8 Oct 2024
Rule 110
msbranicky
138
18ms
3 Oct 2024
Rule 110
Mabeloid
126
16ms
22 Sep 2024
Rule 110
stefangimmillaro
69
9ms
19 Sep 2024
Rule 110
hiichbindermax
114
11ms
17 Sep 2024
Rule 110
alemelis
119
10ms
14 Sep 2024
Rule 110
EnTerr
106
15ms
1 Sep 2024
Rule 110
duckyluuk
81
15ms
15 Aug 2024
Rule 110
fgrosshans
101
18ms
22 Jul 2024
Rule 110
pardouin
🥇
59
12ms
12 Jul 2024
Rule 110
cykim8811
89
15ms
11 Jul 2024
Rule 110
dokutan
108
29ms
9 Jul 2024
Rule 110
CutSandstone
115
16ms
5 Jul 2024
Rule 110
hellwue
142
17ms
25 Jun 2024
Rule 110
stertooy
110
11ms
19 Jun 2024