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
Highly Composite Numbers
jusaka
757
3ms
11 hours ago
Highly Composite Numbers
jusaka
619
2,501ms
11 hours ago
Highly Composite Numbers
jusaka
398
1,037ms
11 hours ago
Highly Composite Numbers
jusaka
412
3ms
11 hours ago
Highly Composite Numbers
jusaka
413
180ms
11 hours ago
Highly Composite Numbers
jusaka
410
4ms
11 hours ago
Highly Composite Numbers
jusaka
656
10ms
11 hours ago
Highly Composite Numbers
jusaka
421
111ms
11 hours ago
Highly Composite Numbers
jusaka
402
3ms
11 hours ago
Highly Composite Numbers
jusaka
456
2ms
11 hours ago
Highly Composite Numbers
jusaka
465
65ms
11 hours ago
Highly Composite Numbers
jusaka
414
146ms
11 hours ago
Highly Composite Numbers
jusaka
402
54ms
11 hours ago
Highly Composite Numbers
jusaka
879
10ms
11 hours ago
Highly Composite Numbers
jusaka
409
152ms
11 hours ago
Highly Composite Numbers
jusaka
402
97ms
11 hours ago
Highly Composite Numbers
jusaka
416
251ms
11 hours ago
Highly Composite Numbers
jusaka
465
12ms
11 hours ago
Highly Composite Numbers
jusaka
407
6ms
11 hours ago
Highly Composite Numbers
jusaka
406
6ms
11 hours ago
Highly Composite Numbers
jusaka
776
35ms
11 hours ago
Highly Composite Numbers
jusaka
467
25ms
11 hours ago
Highly Composite Numbers
jusaka
405
2,683ms
11 hours ago
Highly Composite Numbers
jusaka
1,507
181ms
11 hours ago
Highly Composite Numbers
jusaka
404
2ms
11 hours ago
Highly Composite Numbers
jusaka
405
167ms
11 hours ago
Highly Composite Numbers
jusaka
431
665ms
11 hours ago
Highly Composite Numbers
jusaka
455
10ms
11 hours ago
Highly Composite Numbers
jusaka
1,306
16ms
11 hours ago
Highly Composite Numbers
jusaka
462
5ms
11 hours ago
Highly Composite Numbers
jusaka
952
48ms
11 hours ago
Highly Composite Numbers
jusaka
6,343
8ms
11 hours ago
Highly Composite Numbers
jusaka
496
1,687ms
11 hours ago
Highly Composite Numbers
jusaka
403
841ms
11 hours ago
Highly Composite Numbers
jusaka
466
161ms
11 hours ago
Highly Composite Numbers
jusaka
443
381ms
11 hours ago
Highly Composite Numbers
jusaka
459
53ms
11 hours ago
Highly Composite Numbers
jusaka
405
1,580ms
11 hours ago
Highly Composite Numbers
jusaka
2,845
80ms
11 hours ago
Highly Composite Numbers
jusaka
1,127
5ms
11 hours ago
Highly Composite Numbers
jusaka
818
1,580ms
11 hours ago
Highly Composite Numbers
jusaka
968
5ms
11 hours ago
Highly Composite Numbers
jusaka
879
99ms
11 hours ago
Highly Composite Numbers
jusaka
440
1,742ms
11 hours ago
Highly Composite Numbers
jusaka
479
165ms
11 hours ago
Highly Composite Numbers
jusaka
464
99ms
11 hours ago
Highly Composite Numbers
jusaka
437
203ms
11 hours ago
Highly Composite Numbers
jusaka
438
144ms
11 hours ago
Highly Composite Numbers
jusaka
413
567ms
11 hours ago
Highly Composite Numbers
jusaka
1,245
256ms
11 hours ago
Highly Composite Numbers
jusaka
411
455ms
11 hours ago
Highly Composite Numbers
jusaka
409
6ms
11 hours ago
Highly Composite Numbers
jusaka
1,077
12ms
11 hours ago
Highly Composite Numbers
jusaka
463
7ms
11 hours ago
Highly Composite Numbers
jusaka
494
2ms
11 hours ago
Highly Composite Numbers
jusaka
462
2ms
11 hours ago
Highly Composite Numbers
jusaka
463
3ms
11 hours ago
Highly Composite Numbers
jusaka
588
2ms
11 hours ago
Highly Composite Numbers
jusaka
879
48ms
11 hours ago
Highly Composite Numbers
jusaka
6,104
2ms
11 hours ago
Highly Composite Numbers
jusaka
468
2ms
11 hours ago
Highly Composite Numbers
jusaka
648
7ms
11 hours ago
Highly Composite Numbers
jusaka
254
13ms
8 days ago
Highly Composite Numbers
madex
165
24ms
21 days ago
Highly Composite Numbers
fantaize
1,651
235ms
10 Mar 2026
Highly Composite Numbers
AdrienHache
124
4,913ms
7 Mar 2026
Highly Composite Numbers
KatieLG
400
3ms
21 Feb 2026
Highly Composite Numbers
elgan65536
1,068
1ms
9 Feb 2026
Highly Composite Numbers
elgan65536
203
125ms
9 Feb 2026
Highly Composite Numbers
Shanethegamer
399
3ms
7 Feb 2026
Highly Composite Numbers
Shanethegamer
404
1ms
7 Feb 2026
Highly Composite Numbers
HumanoidCPU
404
1ms
6 Feb 2026
Highly Composite Numbers
plcc0
113
22ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
411
2ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
460
138ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
398
2ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
455
2ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
451
6ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
478
640ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
400
1ms
9 Jan 2026