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Calendar
hole will go live in approximately
2 days
. Why not try and solve it ahead of time?
Recent Solutions
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
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
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
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
Multitap Input
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
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><>
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
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
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
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
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
Multitap Input
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Fractions
MeWhenI
137
419ms
5 hours ago
Tower of Hanoi
KatieLG
338
382ms
13 hours ago
Mandelbrot
mwarvik
10,023
385ms
18 hours ago
Mandelbrot
amazingalek
10,022
316ms
19 hours ago
Hilbert Curve
mwarvik
5,136
362ms
20 hours ago
Calendar
CaedenHarper
297
440ms
30 hours ago
Leap Years
Emilioso007
80
377ms
31 hours ago
Fibonacci
Emilioso007
96
396ms
32 hours ago
Fractions
michelebastione
158
355ms
34 hours ago
Hilbert Curve
amazingalek
5,136
329ms
34 hours ago
Happy Numbers
amazingalek
86
348ms
34 hours ago
ASCII Table
mwarvik
295
337ms
36 hours ago
Prime Numbers (Long)
mwarvik
102
520ms
43 hours ago
Pascal’s Triangle
mwarvik
787
365ms
43 hours ago
Lucky Numbers
mwarvik
4,838
357ms
43 hours ago
Morse Encoder
amazingalek
297
418ms
43 hours ago
Prime Numbers (Long)
amazingalek
88
431ms
43 hours ago
Prime Numbers
amazingalek
87
400ms
43 hours ago
Pascal’s Triangle
amazingalek
787
354ms
43 hours ago
Lucky Numbers
amazingalek
168
438ms
43 hours ago
Tongue-twisters
amazingalek
389
378ms
44 hours ago
τ
JayXon
🥈
110
496ms
47 hours ago
Tongue-twisters
mwarvik
390
407ms
2 days ago
Emirp Numbers
michelebastione
154
478ms
2 days ago
Emirp Numbers (Long)
michelebastione
154
533ms
2 days ago
Levenshtein Distance
michelebastione
229
420ms
2 days ago
Hexagonal Spiral
bitsandbeyond
233
393ms
2 days ago
Seven Segment
mwarvik
218
383ms
2 days ago
Leyland Numbers
mwarvik
904
395ms
2 days ago
Leyland Numbers
amazingalek
904
357ms
2 days ago
United States
amazingalek
287
417ms
2 days ago
Seven Segment
amazingalek
198
410ms
2 days ago
Pangram Grep
mwarvik
100
440ms
2 days ago
Trinomial Triangle
Yax42
141
416ms
2 days ago
ASCII Table
michelebastione
194
405ms
2 days ago
N Queens
Yax42
179
404ms
2 days ago
Niven Numbers
mwarvik
69
459ms
2 days ago
Morse Encoder
mwarvik
301
403ms
2 days ago
12 Days of Christmas
amazingalek
504
374ms
2 days ago
12 Days of Christmas
mwarvik
589
405ms
2 days ago
Pangram Grep
amazingalek
101
395ms
3 days ago
Divisors
fuzzylojik-golf
76
403ms
3 days ago
Collatz
mwarvik
3,244
356ms
3 days ago
Day of Week
amazingalek
67
357ms
3 days ago
Collatz
amazingalek
87
403ms
3 days ago
Card Number Validation
amazingalek
159
387ms
3 days ago
12 Days of Christmas
codewrite
558
391ms
3 days ago
Quine
edsrzf
🥇
73
344ms
4 days ago
Van Eck Sequence
AdrienHache
🥇
79
391ms
4 days ago
Abundant Numbers (Long)
michelebastione
93
414ms
4 days ago
Abundant Numbers
michelebastione
93
402ms
4 days ago
ROT13
michelebastione
130
430ms
4 days ago
Hexdump
michelebastione
226
454ms
4 days ago
Odious Numbers
michelebastione
72
403ms
4 days ago
Evil Numbers
michelebastione
73
433ms
4 days ago
Evil Numbers (Long)
michelebastione
74
437ms
4 days ago
Mahjong
Yax42
416
459ms
4 days ago
United States
mwarvik
538
417ms
4 days ago
Prime Numbers
mwarvik
89
329ms
4 days ago
π
mwarvik
1,020
366ms
4 days ago
𝑒
mwarvik
1,020
362ms
4 days ago
λ
mwarvik
1,020
354ms
4 days ago
τ
mwarvik
1,020
360ms
4 days ago
φ
mwarvik
1,020
373ms
4 days ago
√2
mwarvik
1,020
376ms
4 days ago
ln 2
mwarvik
1,020
377ms
4 days ago
γ
mwarvik
1,020
373ms
4 days ago
Arrows
mwarvik
368
495ms
4 days ago
Prime Numbers
albanian-laundromat
65
367ms
5 days ago
Prime Numbers
AdrienHache
🥇
62
387ms
5 days ago
99 Bottles of Beer
codewrite
310
416ms
5 days ago
Arrows
amazingalek
245
358ms
5 days ago
Lucky Numbers
AdrienHache
102
413ms
5 days ago
Rijndael S-box
bitsandbeyond
🥉
158
373ms
5 days ago
Hilbert Curve
Yax42
332
459ms
5 days ago
Cubes
qrakhen
286
359ms
5 days ago
99 Bottles of Beer
Yax42
245
369ms
5 days ago
Lucky Numbers
Yax42
118
460ms
5 days ago
Trinomial Triangle
tomtheisen
119
456ms
6 days ago
Arithmetic Numbers
amazingalek
112
462ms
6 days ago