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
Cubes
lelbal
2,843
11ms
14 days ago
Cubes
ryyyn
186
11ms
21 days ago
Cubes
Mabeloid
205
11ms
20 Oct 2025
Cubes
luuumine
2,839
10ms
17 Oct 2025
Cubes
Babafaba
143
12ms
15 Oct 2025
Cubes
mossiegoat
155
10ms
3 Oct 2025
Cubes
blaztoma
210
9ms
27 Sep 2025
Cubes
AnAwesomGuy
132
16ms
23 Sep 2025
Cubes
qpwoeirut
214
10ms
16 Sep 2025
Cubes
plopa1
388
9ms
15 Sep 2025
Cubes
tomh1012
254
10ms
15 Sep 2025
Cubes
imoxyg
349
10ms
29 Aug 2025
Cubes
Emutis
290
10ms
26 Aug 2025
Cubes
dev-kas
298
9ms
24 Aug 2025
Cubes
wobblybits
197
9ms
14 Aug 2025
Cubes
EthanJantz
218
12ms
12 Aug 2025
Cubes
5cw
179
10ms
6 Aug 2025
Cubes
wuduculfre
2,960
11ms
3 Aug 2025
Cubes
InigoK
127
11ms
31 Jul 2025
Cubes
Zhenyu-Bo
599
11ms
30 Jul 2025
Cubes
Upload-and-View
369
10ms
24 Jul 2025
Cubes
ndren
138
29ms
20 Jul 2025
Cubes
fkantelberg
150
10ms
15 Jul 2025
Cubes
RaBa21
154
9ms
13 Jul 2025
Cubes
Flekay
236
9ms
10 Jul 2025
Cubes
andrewjc2000
199
11ms
8 Jul 2025
Cubes
dirckvdende
266
9ms
6 Jul 2025
Cubes
madex
248
12ms
28 Jun 2025
Cubes
smilesformiles3
219
9ms
14 Jun 2025
Cubes
CoolBvll
297
9ms
12 Jun 2025
Cubes
Lv0Sys
305
9ms
10 Jun 2025
Cubes
strogor
272
10ms
9 Jun 2025
Cubes
emgordon154
118
16ms
3 Jun 2025
Cubes
qwertzguy
412
10ms
29 May 2025
Cubes
TheZwierzLF
201
10ms
22 May 2025
Cubes
ffelixm
252
10ms
21 May 2025
Cubes
madeforlosers
2,839
11ms
9 May 2025
Cubes
keelimeguy
114
13ms
7 May 2025
Cubes
commandblockguy
207
9ms
4 May 2025
Cubes
jjkochan-metro
373
9ms
9 Apr 2025
Cubes
plcc0
126
10ms
8 Apr 2025
Cubes
pquline
307
10ms
6 Apr 2025
Cubes
albanian-laundromat
146
10ms
3 Apr 2025
Cubes
mishak-sys
290
10ms
28 Mar 2025
Cubes
Seek64
116
11ms
6 Mar 2025
Cubes
HumanoidCPU
142
10ms
5 Mar 2025
Cubes
kevinnaviapaiva
487
9ms
24 Feb 2025
Cubes
CornerMercury
146
22ms
15 Feb 2025
Cubes
ovs-code
128
9ms
14 Feb 2025
Cubes
JunkIce
147
11ms
13 Feb 2025
Cubes
sean-niemann
124
10ms
2 Feb 2025
Cubes
ComputerKWasTaken
332
10ms
2 Feb 2025
Cubes
snoozingnewt
132
9ms
14 Jan 2025
Cubes
TheAtrossian
2,945
10ms
8 Jan 2025
Cubes
AidanWalter
618
10ms
3 Jan 2025
Cubes
CaedenHarper
127
11ms
2 Jan 2025
Cubes
croc54
244
10ms
30 Dec 2024
Cubes
moustave
232
11ms
2 Dec 2024
Cubes
lifthrasiir
115
25ms
21 Nov 2024
Cubes
Pulencode
216
10ms
14 Nov 2024
Cubes
wh3n3v3r
126
10ms
13 Nov 2024
Cubes
WillConker
256
9ms
25 Oct 2024
Cubes
HunterC14
1,464
10ms
24 Oct 2024
Cubes
NotEvenIndian
221
9ms
22 Oct 2024
Cubes
VictorStenvers
246
10ms
22 Oct 2024
Cubes
lhulinsky
214
9ms
21 Oct 2024
Cubes
roguh
217
9ms
20 Oct 2024
Cubes
jan-Simiman
234
11ms
16 Oct 2024
Cubes
RedzGoose
212
9ms
14 Oct 2024
Cubes
bizy-coder
183
19ms
12 Oct 2024
Cubes
xyangst
2,839
10ms
7 Oct 2024
Cubes
FortuiteMan
236
9ms
5 Oct 2024
Cubes
zyc-2024
2,839
10ms
5 Oct 2024
Cubes
Rubiksmath
267
9ms
29 Sep 2024
Cubes
hiichbindermax
244
9ms
11 Sep 2024