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
Highly Composite Numbers
HumanoidCPU
710
25ms
5 hours ago
Highly Composite Numbers
namelessiw
44
1,290ms
6 hours ago
Highly Composite Numbers
Matter1024
122
16ms
3 days ago
Highly Composite Numbers
Matter1024
122
31ms
3 days ago
Highly Composite Numbers
JOrE20
358
8ms
6 days ago
Highly Composite Numbers
JOrE20
395
6ms
6 days ago
Highly Composite Numbers
HumanoidCPU
460
1ms
7 days ago
Highly Composite Numbers
Shanethegamer
460
1ms
7 days ago
Highly Composite Numbers
HumanoidCPU
575
6ms
10 days ago
Highly Composite Numbers
HumanoidCPU
513
14ms
10 days ago
Highly Composite Numbers
HumanoidCPU
413
98ms
10 days ago
Highly Composite Numbers
HumanoidCPU
400
2ms
10 days ago
Highly Composite Numbers
HumanoidCPU
400
2ms
10 days ago
Highly Composite Numbers
HumanoidCPU
422
314ms
11 days ago
Highly Composite Numbers
aiwana
85
52ms
15 Oct 2025
Highly Composite Numbers
luuumine
404
10ms
13 Oct 2025
Highly Composite Numbers
ovs-code
56
1,653ms
8 Oct 2025
Highly Composite Numbers
bitsandbeyond
91
2,186ms
7 Oct 2025
Highly Composite Numbers
snoozingnewt
391
7ms
7 Oct 2025
Highly Composite Numbers
KatieLG
213
422ms
6 Oct 2025
Highly Composite Numbers
wleightond
394
3ms
6 Oct 2025
Highly Composite Numbers
KatieLG
242
9ms
5 Oct 2025
Highly Composite Numbers
namelessiw
166
341ms
3 Oct 2025
Highly Composite Numbers
namelessiw
99
9ms
3 Oct 2025
Highly Composite Numbers
KatieLG
256
43ms
2 Oct 2025
Highly Composite Numbers
KasperKivimaeki
404
777ms
2 Oct 2025
Highly Composite Numbers
KatieLG
397
3ms
30 Sep 2025
Highly Composite Numbers
KatieLG
400
6ms
30 Sep 2025
Highly Composite Numbers
Shanethegamer
506
1,573ms
28 Sep 2025
Highly Composite Numbers
Shanethegamer
422
332ms
25 Sep 2025
Highly Composite Numbers
Shanethegamer
455
2ms
23 Sep 2025
Highly Composite Numbers
Shanethegamer
400
2ms
18 Sep 2025
Highly Composite Numbers
KatieLG
607
1,573ms
14 Sep 2025
Highly Composite Numbers
HumanoidCPU
506
1,588ms
13 Sep 2025
Highly Composite Numbers
snoozingnewt
392
421ms
12 Sep 2025
Highly Composite Numbers
cthierfelder
570
28ms
6 Sep 2025
Highly Composite Numbers
cthierfelder
417
9ms
6 Sep 2025
Highly Composite Numbers
HumanoidCPU
1,127
50ms
25 Aug 2025
Highly Composite Numbers
HumanoidCPU
756
4ms
25 Aug 2025
Highly Composite Numbers
HumanoidCPU
523
6ms
25 Aug 2025
Highly Composite Numbers
HumanoidCPU
635
1ms
25 Aug 2025
Highly Composite Numbers
HumanoidCPU
757
7ms
25 Aug 2025
Highly Composite Numbers
HumanoidCPU
458
2ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
480
4ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
505
292ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
472
3ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
455
2ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
404
778ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
401
159ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
401
2ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
394
358ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
406
8ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
401
184ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
439
275ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
401
88ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
414
652ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
392
43ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
404
1ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
392
136ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
420
64ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
397
4ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
400
8ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
409
67ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
393
89ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
392
424ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
402
593ms
18 Aug 2025
Highly Composite Numbers
targrik
173
4ms
14 Aug 2025
Highly Composite Numbers
HumanoidCPU
393
1ms
13 Aug 2025
Highly Composite Numbers
Shanethegamer
393
1ms
5 Aug 2025
Highly Composite Numbers
Shanethegamer
472
3ms
28 Jul 2025
Highly Composite Numbers
Shanethegamer
418
63ms
3 Jul 2025
Highly Composite Numbers
Shanethegamer
401
158ms
2 Jul 2025
Highly Composite Numbers
rucin93
95
3,799ms
31 May 2025
Highly Composite Numbers
rucin93
91
2,458ms
31 May 2025
Highly Composite Numbers
Shanethegamer
394
14ms
30 May 2025