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
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
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
Apéry’s Constant
Binary Lambda Calculus
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
Multitap Input
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
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
ALGOL 68
APL
ArkScript
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
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
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
ALGOL 68
APL
ArkScript
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
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
Calendar
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
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
Apéry’s Constant
Binary Lambda Calculus
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
Multitap Input
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Pernicious Numbers
NoneTheFewer
129
235ms
4 days ago
Pernicious Numbers
snoozingnewt
🥇
22
215ms
20 Oct 2025
Pernicious Numbers
Yax42
34
204ms
4 Oct 2025
Pernicious Numbers
fuzzylojik-golf
🥇
22
190ms
27 Aug 2025
Pernicious Numbers
CaedenHarper
99
209ms
16 Aug 2025
Pernicious Numbers
juliansiebert
28
220ms
11 Feb 2025
Pernicious Numbers
5quiwyrm
50
217ms
4 Dec 2024
Pernicious Numbers
IISResetMe
33
229ms
18 Nov 2024
Pernicious Numbers
dokutan
83
222ms
14 Oct 2024
Pernicious Numbers
Mabeloid
101
192ms
3 Oct 2024
Pernicious Numbers
pardouin
🥇
22
224ms
19 Aug 2024
Pernicious Numbers
bitsandbeyond
🥇
22
217ms
8 Jun 2024
Pernicious Numbers
HumanoidCPU
99
187ms
10 May 2024
Pernicious Numbers
corbob
53
219ms
30 Apr 2024
Pernicious Numbers
JPRuskin
53
205ms
30 Apr 2024
Pernicious Numbers
dcgjb
28
222ms
21 Feb 2024
Pernicious Numbers
rucin93
45
208ms
12 Jan 2024
Pernicious Numbers
Feniske
52
194ms
23 Nov 2023
Pernicious Numbers
Yewzir
🥇
22
218ms
19 Nov 2023
Pernicious Numbers
Arnaud-beep
72
222ms
16 Nov 2023
Pernicious Numbers
Betuaredead
30
231ms
14 Nov 2023
Pernicious Numbers
Msleizak
285
241ms
9 Nov 2023
Pernicious Numbers
HCRitter
105
191ms
1 Nov 2023
Pernicious Numbers
ovs-code
🥇
22
215ms
17 Jul 2023
Pernicious Numbers
Shanethegamer
🥇
22
212ms
6 Feb 2023
Pernicious Numbers
sean-niemann
🥇
22
236ms
22 Jan 2023
Pernicious Numbers
DialFrost
🥇
22
219ms
12 Jan 2023
Pernicious Numbers
Steffan153
🥇
22
221ms
1 Jan 2023
Pernicious Numbers
retrohun
112
193ms
28 Dec 2022
Pernicious Numbers
nwellnhof
30
243ms
26 Nov 2022
Pernicious Numbers
MeWhenI
🥇
22
188ms
5 Nov 2022
Pernicious Numbers
stefangimmillaro
🥇
22
219ms
4 Nov 2022
Pernicious Numbers
MaxCastella
99
161ms
9 Aug 2022
Pernicious Numbers
KatieLG-Transpiler
140
198ms
24 Jun 2022
Pernicious Numbers
inventshah
🥇
22
204ms
18 Jun 2022
Pernicious Numbers
SirBogman
🥇
22
217ms
31 May 2022
Pernicious Numbers
krcs
57
230ms
9 May 2022
Pernicious Numbers
danubie
79
235ms
24 Dec 2021
Pernicious Numbers
mokymok
135
196ms
8 Nov 2021
Pernicious Numbers
GrayJoKing
🥇
22
226ms
19 Oct 2021
Pernicious Numbers
KatieLG
140
197ms
10 Oct 2021
Pernicious Numbers
lynn
🥇
22
205ms
11 Sep 2021
Pernicious Numbers
orthoplex
🥇
22
211ms
12 Aug 2021
Pernicious Numbers
NewDefectus
43
214ms
25 Jul 2021
Pernicious Numbers
Lydxn
🥇
22
221ms
9 Jun 2021
Pernicious Numbers
sisyphus-ppcg
🥇
22
212ms
8 Jun 2021
Pernicious Numbers
rholliday
112
250ms
26 Feb 2021
Pernicious Numbers
prplz
🥇
22
209ms
10 Feb 2021
Pernicious Numbers
primo-ppcg
🥇
22
209ms
9 Feb 2021
Pernicious Numbers
JayXon
🥇
22
203ms
9 Feb 2021
Pernicious Numbers
btnlq
🥇
22
212ms
9 Feb 2021
Pernicious Numbers
AJLindner
115
1,082ms
6 Jan 2021
Pernicious Numbers
TimCurwick
55
218ms
30 Nov 2020
Pernicious Numbers
mcmiv413
56
202ms
22 Oct 2020
Pernicious Numbers
acolytegerm
106
221ms
7 Sep 2020
Pernicious Numbers
rvdnieuwendijk
53
200ms
28 Jun 2020
Pernicious Numbers
northvandrew
62
203ms
22 Jun 2020
Pernicious Numbers
HumanEquivalentUnit
35
218ms
15 Jun 2020
Pernicious Numbers
bstrautin
35
208ms
9 Jun 2020
Pernicious Numbers
KevinMarquette
76
228ms
8 Jun 2020
Pernicious Numbers
Agazoth
80
227ms
8 Jun 2020
Pernicious Numbers
amrowicki
131
254ms
8 Jun 2020
Pernicious Numbers
ThePSAdmin
38
221ms
7 Jun 2020
Pernicious Numbers
SeeminglyScience
41
213ms
6 Jun 2020
Pernicious Numbers
SteveL-MSFT
84
224ms
6 Jun 2020
Pernicious Numbers
stahler
94
264ms
6 Jun 2020
Pernicious Numbers
krzydoug
172
250ms
6 Jun 2020
Pernicious Numbers
lahell
52
244ms
5 Jun 2020
Pernicious Numbers
JamesWTruher
59
211ms
4 Jun 2020
Pernicious Numbers
thlac
105
174ms
3 Jun 2020