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
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
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
Bytes
Time
Submitted
Kolakoski Sequence
StronkCheese2
182
2ms
41 hours ago
Kolakoski Sequence
HumanoidCPU
165
2ms
45 hours ago
Kolakoski Sequence
HumanoidCPU
2,047
279ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,006
3ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,028
4ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,022
566ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,014
7ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,006
7ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,004
2ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,020
3ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,009
14ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,007
3ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,013
58ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,010
202ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,008
6ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,009
145ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,008
856ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,008
3ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,053
223ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,009
80ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,008
9ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,002
365ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,028
61ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,000
388ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,012
2ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,006
886ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,000
145ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,000
50ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,001
96ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,006
3ms
47 hours ago
Kolakoski Sequence
CaedenHarper
176
252ms
47 hours ago
Kolakoski Sequence
HumanoidCPU
2,008
2ms
47 hours ago
Kolakoski Sequence
CaedenHarper
2,008
2ms
2 days ago
Kolakoski Sequence
madeforlosers
95
11ms
3 days ago
Kolakoski Sequence
HumanoidCPU
2,007
14ms
3 days ago
Kolakoski Sequence
luuumine
147
131ms
4 days ago
Kolakoski Sequence
luuumine
108
3ms
4 days ago
Kolakoski Sequence
HumanoidCPU
2,003
5ms
5 days ago
Kolakoski Sequence
GolfingSuccess
2,049
12ms
6 days ago
Kolakoski Sequence
HumanoidCPU
2,025
322ms
6 days ago
Kolakoski Sequence
AlephSquirrel
19
2ms
6 days ago
Kolakoski Sequence
MeWhenI
153
1,577ms
6 days ago
Kolakoski Sequence
MeWhenI
80
338ms
6 days ago
Kolakoski Sequence
dokutan
277
496ms
7 days ago
Kolakoski Sequence
DialFrost
99
230ms
7 days ago
Kolakoski Sequence
DialFrost
69
292ms
7 days ago
Kolakoski Sequence
DialFrost
83
55ms
7 days ago
Kolakoski Sequence
DialFrost
81
365ms
7 days ago
Kolakoski Sequence
DialFrost
76
329ms
7 days ago
Kolakoski Sequence
gigaprofisi
2,012
4ms
7 days ago
Kolakoski Sequence
JOrE20
4,692
3ms
8 days ago
Kolakoski Sequence
gigaprofisi
2,009
39ms
8 days ago
Kolakoski Sequence
madeforlosers
66
9ms
9 days ago
Kolakoski Sequence
Babafaba
60
341ms
9 days ago
Kolakoski Sequence
Babafaba
60
43ms
9 days ago
Kolakoski Sequence
Chinay-Domitrix
222
2,128ms
10 days ago
Kolakoski Sequence
HumanoidCPU
2,003
4ms
10 days ago
Kolakoski Sequence
maweowo
38
4ms
11 days ago
Kolakoski Sequence
sean-niemann
🥇
73
3ms
15 days ago
Kolakoski Sequence
snoozingnewt
114
6ms
15 days ago
Kolakoski Sequence
snoozingnewt
113
96ms
15 days ago
Kolakoski Sequence
snoozingnewt
131
4ms
15 days ago
Kolakoski Sequence
snoozingnewt
137
96ms
15 days ago
Kolakoski Sequence
snoozingnewt
182
206ms
15 days ago
Kolakoski Sequence
snoozingnewt
283
26ms
15 days ago
Kolakoski Sequence
snoozingnewt
80
230ms
15 days ago
Kolakoski Sequence
snoozingnewt
122
5ms
15 days ago
Kolakoski Sequence
snoozingnewt
69
3ms
15 days ago
Kolakoski Sequence
snoozingnewt
202
26ms
15 days ago
Kolakoski Sequence
snoozingnewt
261
35ms
15 days ago
Kolakoski Sequence
snoozingnewt
109
2ms
15 days ago
Kolakoski Sequence
snoozingnewt
124
2,262ms
15 days ago
Kolakoski Sequence
snoozingnewt
113
195ms
15 days ago
Kolakoski Sequence
snoozingnewt
111
15ms
15 days ago
Kolakoski Sequence
snoozingnewt
194
351ms
15 days ago