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
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
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
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
Trinomial Triangle
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
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
Groovy
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
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
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
Groovy
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
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
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
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
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
Rule 110
Upload-and-View
261
21 hours ago
Rule 110
AdrienHache
99
29 hours ago
Rule 110
albanian-laundromat
125
46 hours ago
Rule 110
HumanoidCPU
16,004
2 days ago
Rule 110
HumanoidCPU
15,979
2 days ago
Rule 110
HumanoidCPU
15,971
2 days ago
Rule 110
HumanoidCPU
15,954
2 days ago
Rule 110
HumanoidCPU
15,964
2 days ago
Rule 110
HumanoidCPU
15,957
2 days ago
Rule 110
HumanoidCPU
15,861
2 days ago
Rule 110
HumanoidCPU
15,864
2 days ago
Rule 110
HumanoidCPU
15,861
2 days ago
Rule 110
HumanoidCPU
15,899
2 days ago
Rule 110
HumanoidCPU
15,853
2 days ago
Rule 110
HumanoidCPU
15,852
2 days ago
Rule 110
HumanoidCPU
15,861
2 days ago
Rule 110
HumanoidCPU
15,853
2 days ago
Rule 110
CaedenHarper
38,447
2 days ago
Rule 110
CaedenHarper
16,120
3 days ago
Rule 110
CaedenHarper
58,694
3 days ago
Rule 110
CaedenHarper
16,007
3 days ago
Rule 110
CaedenHarper
15,952
3 days ago
Rule 110
CaedenHarper
15,867
3 days ago
Rule 110
CaedenHarper
15,857
3 days ago
Rule 110
CaedenHarper
15,860
3 days ago
Rule 110
CaedenHarper
15,858
3 days ago
Rule 110
CaedenHarper
15,866
3 days ago
Rule 110
CaedenHarper
15,861
3 days ago
Rule 110
CaedenHarper
15,872
3 days ago
Rule 110
CaedenHarper
15,857
3 days ago
Rule 110
CaedenHarper
15,857
3 days ago
Rule 110
CaedenHarper
15,857
3 days ago
Rule 110
CaedenHarper
15,858
3 days ago
Rule 110
CaedenHarper
15,863
3 days ago
Rule 110
CaedenHarper
15,853
3 days ago
Rule 110
CaedenHarper
15,857
3 days ago
Rule 110
CaedenHarper
15,856
3 days ago
Rule 110
CaedenHarper
15,865
3 days ago
Rule 110
CaedenHarper
15,861
3 days ago
Rule 110
CaedenHarper
15,860
3 days ago
Rule 110
CaedenHarper
16,167
3 days ago
Rule 110
wobblybits
158
4 days ago
Rule 110
HumanoidCPU
15,880
6 days ago
Rule 110
qpwoeirut
105
6 days ago
Rule 110
HumanoidCPU
16,450
6 days ago
Rule 110
HumanoidCPU
17,155
7 days ago
Rule 110
CaedenHarper
103
7 days ago
Rule 110
CaedenHarper
107
7 days ago
Rule 110
SwordF-Official
169
9 days ago
Rule 110
pardouin
🥇
62
9 days ago
Rule 110
pardouin
🥇
59
9 days ago
Rule 110
Yax42
116
13 days ago
Rule 110
acollett89
208
15 days ago
Rule 110
Shanethegamer
15,853
15 days ago
Rule 110
emgordon154
125
15 days ago
Rule 110
emgordon154
59
15 days ago
Rule 110
CaedenHarper
15,859
16 days ago
Rule 110
emgordon154
253
16 days ago
Rule 110
emgordon154
68
16 days ago
Rule 110
emgordon154
66
16 days ago
Rule 110
emgordon154
72
16 days ago
Rule 110
emgordon154
148
16 days ago
Rule 110
emgordon154
97
16 days ago
Rule 110
emgordon154
74
16 days ago
Rule 110
alphafalfa
183
19 days ago
Rule 110
Zhenyu-Bo
201
19 days ago
Rule 110
Shanethegamer
15,971
23 days ago
Rule 110
MeWhenI
93
25 days ago
Rule 110
SectorCorruptor
15,864
27 days ago
Rule 110
wuduculfre
82
22 Jul 2025
Rule 110
dokutan
2,249
21 Jul 2025
Rule 110
RaBa21
165
19 Jul 2025
Rule 110
aliakseikalosha
199
18 Jul 2025
Rule 110
dokutan
196
16 Jul 2025
Rule 110
XenThe
130
14 Jul 2025