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
Semiprime Numbers
HumanoidCPU
25,927
34ms
24 hours ago
Semiprime Numbers
namelessiw
8
288ms
2 days ago
Semiprime Numbers
cthierfelder
155
169ms
7 days ago
Semiprime Numbers
HumanoidCPU
15,421
1ms
8 days ago
Semiprime Numbers
HumanoidCPU
18,038
135ms
10 days ago
Semiprime Numbers
kmathis22
223
411ms
10 days ago
Semiprime Numbers
kmathis22
231
143ms
10 days ago
Semiprime Numbers
KrausRaus
69
89ms
10 days ago
Semiprime Numbers
HumanoidCPU
18,133
41ms
11 days ago
Semiprime Numbers
HumanoidCPU
55,923
10ms
11 days ago
Semiprime Numbers
HumanoidCPU
12,797
3ms
11 days ago
Semiprime Numbers
HumanoidCPU
20,664
20ms
11 days ago
Semiprime Numbers
HumanoidCPU
12,819
342ms
12 days ago
Semiprime Numbers
AdrienHache
93
673ms
18 days ago
Semiprime Numbers
kg583
95
4,140ms
18 days ago
Semiprime Numbers
kg583
83
4,329ms
18 days ago
Semiprime Numbers
themoonisacheese
10
2,658ms
24 days ago
Semiprime Numbers
bitsandbeyond
59
3,014ms
23 Oct 2025
Semiprime Numbers
Shanethegamer
90
327ms
22 Oct 2025
Semiprime Numbers
Shanethegamer
73
267ms
21 Oct 2025
Semiprime Numbers
stefangimmillaro
66
67ms
21 Oct 2025
Semiprime Numbers
targrik
125
310ms
8 Oct 2025
Semiprime Numbers
KatieLG
4,677
2,986ms
6 Oct 2025
Semiprime Numbers
KatieLG
6,441
10ms
5 Oct 2025
Semiprime Numbers
DialFrost
103
344ms
2 Oct 2025
Semiprime Numbers
namelessiw
103
357ms
2 Oct 2025
Semiprime Numbers
KatieLG
12,794
5ms
30 Sep 2025
Semiprime Numbers
KatieLG
12,797
13ms
30 Sep 2025
Semiprime Numbers
Shanethegamer
15,467
1,660ms
28 Sep 2025
Semiprime Numbers
Shanethegamer
106
355ms
25 Sep 2025
Semiprime Numbers
sean-niemann
103
378ms
25 Sep 2025
Semiprime Numbers
KatieLG
15,568
1,507ms
14 Sep 2025
Semiprime Numbers
HumanoidCPU
15,467
1,589ms
13 Sep 2025
Semiprime Numbers
DialFrost
69
3,203ms
28 Aug 2025
Semiprime Numbers
Shanethegamer
135
286ms
27 Aug 2025
Semiprime Numbers
KasperKivimaeki
101
32ms
21 Aug 2025
Semiprime Numbers
HumanoidCPU
18,038
531ms
19 Aug 2025
Semiprime Numbers
HumanoidCPU
28,538
12ms
19 Aug 2025
Semiprime Numbers
HumanoidCPU
23,288
4ms
19 Aug 2025
Semiprime Numbers
HumanoidCPU
44,292
485ms
19 Aug 2025
Semiprime Numbers
HumanoidCPU
28,537
7ms
19 Aug 2025
Semiprime Numbers
HumanoidCPU
18,048
391ms
19 Aug 2025
Semiprime Numbers
HumanoidCPU
15,466
267ms
18 Aug 2025
Semiprime Numbers
HumanoidCPU
15,419
2ms
18 Aug 2025
Semiprime Numbers
HumanoidCPU
15,433
3ms
18 Aug 2025
Semiprime Numbers
HumanoidCPU
15,441
5ms
18 Aug 2025
Semiprime Numbers
HumanoidCPU
15,416
3ms
18 Aug 2025
Semiprime Numbers
HumanoidCPU
12,798
2ms
18 Aug 2025
Semiprime Numbers
HumanoidCPU
12,798
198ms
18 Aug 2025
Semiprime Numbers
HumanoidCPU
12,794
4ms
18 Aug 2025
Semiprime Numbers
HumanoidCPU
12,806
85ms
18 Aug 2025
Semiprime Numbers
HumanoidCPU
12,790
2ms
13 Aug 2025
Semiprime Numbers
Shanethegamer
12,790
1ms
5 Aug 2025
Semiprime Numbers
Shanethegamer
15,433
3ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,799
147ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,789
389ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,803
16ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,811
612ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,791
373ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,836
71ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,836
279ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,798
15ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,789
166ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,801
772ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,799
598ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,801
2ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,797
15ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,798
98ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,789
84ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,790
110ms
28 Jul 2025
Semiprime Numbers
ndren
94
2,212ms
5 Jul 2025
Semiprime Numbers
gigaprofisi
12,795
9ms
5 Jul 2025
Semiprime Numbers
Shanethegamer
112
1,831ms
3 Jul 2025
Semiprime Numbers
DialFrost
62
397ms
3 Jul 2025
Semiprime Numbers
Shanethegamer
12,798
152ms
2 Jul 2025