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
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Multitap Input
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
ArkScript
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
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Bytes
Chars
Scoring
Bytes
Chars
Language
All
><>
ALGOL 68
ArkScript
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
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
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
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Multitap Input
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
ISBN
arcpolaris
98
416ms
3 days ago
ISBN
codewrite
143
414ms
4 Jan 2026
ISBN
mwarvik
130
411ms
31 Dec 2025
ISBN
amazingalek
130
393ms
30 Dec 2025
ISBN
chrispewebb
317
416ms
28 Nov 2025
ISBN
Adix-null
137
392ms
10 Nov 2025
ISBN
CaedenHarper
116
403ms
16 Oct 2025
ISBN
snoozingnewt
136
397ms
28 Sep 2025
ISBN
michelebastione
112
419ms
20 Sep 2025
ISBN
namelessiw
83
438ms
1 Aug 2025
ISBN
AdrienHache
🥇
82
423ms
23 Jul 2025
ISBN
sean-niemann
93
424ms
19 Apr 2025
ISBN
HumanoidCPU
118
372ms
3 Mar 2025
ISBN
tomtheisen
🥇
82
425ms
5 Feb 2025
ISBN
Yax42
84
449ms
31 Jan 2025
ISBN
MiffOttah
105
422ms
28 Nov 2024
ISBN
aliakseikalosha
136
380ms
7 Oct 2024
ISBN
Mikey-Beep
127
420ms
4 Sep 2024
ISBN
Steffan153
87
417ms
21 Aug 2024
ISBN
gblikas
190
369ms
21 Aug 2024
ISBN
malworthy
145
425ms
9 Aug 2024
ISBN
alicethecatwhisperermeow
133
426ms
7 Aug 2024
ISBN
acer-xq
121
394ms
5 Aug 2024
ISBN
rifatx
123
372ms
14 Jul 2024
ISBN
Shanethegamer
92
440ms
26 Mar 2024
ISBN
arctouch-cristiannevianna
121
394ms
1 Mar 2024
ISBN
Yewzir
112
420ms
1 Dec 2023
ISBN
billings7
105
414ms
12 Nov 2023
ISBN
bac0id
116
397ms
22 Sep 2023
ISBN
msbranicky
149
435ms
22 Aug 2023
ISBN
MeWhenI
90
439ms
9 Aug 2023
ISBN
nwellnhof
🥇
82
420ms
27 Jun 2023
ISBN
janbehrens
115
386ms
23 Jun 2023
ISBN
Lydxn
🥇
82
438ms
19 May 2023
ISBN
postie77
98
461ms
8 May 2023
ISBN
feberhard
93
469ms
6 Apr 2023
ISBN
meinsiedler
98
412ms
6 Apr 2023
ISBN
danielxbauer
98
416ms
6 Apr 2023
ISBN
bojernico
96
419ms
6 Apr 2023
ISBN
pkim
98
450ms
6 Apr 2023
ISBN
fabianrieder
114
429ms
6 Apr 2023
ISBN
Skleni
99
402ms
6 Apr 2023
ISBN
tobiasberei
154
427ms
6 Apr 2023
ISBN
0xDomi
216
395ms
6 Apr 2023
ISBN
JayXon
🥇
82
422ms
11 Mar 2023
ISBN
btnlq
🥇
82
443ms
11 Mar 2023
ISBN
adotagarwal
136
405ms
4 Mar 2023
ISBN
stefangimmillaro
96
419ms
5 Jan 2023
ISBN
Trickermand
337
421ms
12 Dec 2022
ISBN
hemphen
93
369ms
28 Aug 2022
ISBN
hamhub7
116
385ms
9 Aug 2022
ISBN
p-vf
129
372ms
16 Jul 2022
ISBN
KatieLG-Transpiler
425
400ms
4 Jul 2022
ISBN
roavin
116
398ms
23 Jun 2022
ISBN
krcs
154
397ms
10 May 2022
ISBN
primo-ppcg
108
387ms
20 Apr 2022
ISBN
annaproxy
94
429ms
19 Mar 2022
ISBN
ericlangedijk
106
421ms
19 Mar 2022
ISBN
ScottHamper
96
437ms
26 Feb 2022
ISBN
tomh1012
98
437ms
31 Jan 2022
ISBN
memmaptensor
200
447ms
21 Jan 2022
ISBN
revlayle
108
441ms
20 Jan 2022
ISBN
prplz
93
425ms
18 Jan 2022
ISBN
KatieLG
173
368ms
15 Jan 2022
ISBN
m-tkach
121
387ms
10 Jan 2022