The
Calendar
hole will go live in approximately
6 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
All Languages
><>
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
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
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
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
Chars
Time
Submitted
brainfuck
TheZwierzLF
160
39ms
a min ago
Mandelbrot
TheZwierzLF
124
2,395ms
40 mins ago
Quine
MeWhenI
🥇
25
34ms
108 mins ago
Quine
snoozingnewt
🥇
25
32ms
3 hours ago
Medal Tally
TheZwierzLF
242
40ms
3 hours ago
Sudoku (Fill-in)
TheZwierzLF
481
150ms
3 hours ago
π
CaedenHarper
65
40ms
3 hours ago
Quine
CaedenHarper
🥇
25
34ms
3 hours ago
Quine
GolfingSuccess
🥇
25
36ms
3 hours ago
Quine
DialFrost
🥇
25
35ms
4 hours ago
Quine
fuzzylojik-golf
🥇
25
36ms
4 hours ago
ln 2
edsrzf
63
42ms
4 hours ago
Quine
edsrzf
26
37ms
5 hours ago
Ascending Primes
error256
67
2,398ms
5 hours ago
π
edsrzf
56
53ms
5 hours ago
12 Days of Christmas
od86
648
34ms
6 hours ago
π
blaztoma
62
47ms
7 hours ago
τ
blaztoma
66
43ms
7 hours ago
Quine
m-tkach
🥇
25
34ms
9 hours ago
Morse Decoder
TheZwierzLF
308
41ms
9 hours ago
12 Days of Christmas
TheZwierzLF
454
34ms
9 hours ago
Zodiac Signs
TheZwierzLF
196
40ms
10 hours ago
Hilbert Curve
TheZwierzLF
593
34ms
10 hours ago
Quine
sean-niemann
🥇
25
36ms
11 hours ago
Quine
Natanaelel
🥇
25
38ms
11 hours ago
τ
jared-hughes
58
44ms
11 hours ago
π
jared-hughes
60
47ms
11 hours ago
ln 2
jared-hughes
59
44ms
11 hours ago
Quine
GrayJoKing
🥇
25
34ms
11 hours ago
Rock-paper-scissors-Spock-lizard
TheZwierzLF
224
38ms
21 hours ago
Leyland Numbers
TheZwierzLF
72
234ms
21 hours ago
Intersection
TheZwierzLF
153
39ms
21 hours ago
Calendar
MeWhenI
192
40ms
21 hours ago
Trinomial Triangle
error256
🥇
50
40ms
24 hours ago
Factorial Factorisation
error256
72
52ms
26 hours ago
Fractions
FortuiteMan
🥇
17
42ms
29 hours ago
Pernicious Numbers
error256
37
38ms
29 hours ago
Pernicious Numbers (Long)
error256
🥈
43
49ms
29 hours ago
Repeating Decimals
TheZwierzLF
291
51ms
31 hours ago
Levenshtein Distance
TheZwierzLF
192
51ms
31 hours ago
ASCII Table
TheZwierzLF
120
47ms
31 hours ago
Farey Sequence
TheZwierzLF
62
54ms
31 hours ago
Vampire Numbers
TheZwierzLF
174
4,788ms
32 hours ago
Hexagonal Spiral
bitsandbeyond
166
37ms
32 hours ago
Set
TheZwierzLF
96
52ms
45 hours ago
Kaprekar Numbers
TheZwierzLF
253
3,292ms
45 hours ago
Diamonds
TheZwierzLF
115
34ms
45 hours ago
Arithmetic Numbers
TheZwierzLF
83
1,262ms
45 hours ago
Prime Numbers (Long)
TheZwierzLF
37
43ms
45 hours ago
Fractions
TheZwierzLF
🥇
17
36ms
45 hours ago
φ
TheZwierzLF
102
39ms
45 hours ago
Smith Numbers
TheZwierzLF
128
137ms
45 hours ago
Game of Life
TheZwierzLF
207
301ms
45 hours ago
Arrows
TheZwierzLF
190
39ms
45 hours ago
Happy Numbers (Long)
TheZwierzLF
107
39ms
3 days ago
Hexdump
TheZwierzLF
207
38ms
3 days ago
√2
TheZwierzLF
114
44ms
3 days ago
Minesweeper
TheZwierzLF
189
737ms
3 days ago
Proximity Grid
TheZwierzLF
166
63ms
3 days ago
Jacobi Symbol
TheZwierzLF
147
36ms
3 days ago
Foo Fizz Buzz Bar
TheZwierzLF
128
37ms
3 days ago
Calendar
stefangimmillaro
132
38ms
3 days ago
Rijndael S-box
TheZwierzLF
227
36ms
4 days ago
Tic-tac-toe
TheZwierzLF
166
42ms
4 days ago
Kolakoski Sequence
TheZwierzLF
79
128ms
4 days ago
Forsyth–Edwards Notation
TheZwierzLF
131
37ms
4 days ago
Scrambled Sort
TheZwierzLF
131
38ms
4 days ago
Abundant Numbers (Long)
TheZwierzLF
51
56ms
4 days ago
ISBN
TheZwierzLF
82
41ms
4 days ago
Spelling Numbers
TheZwierzLF
503
42ms
4 days ago
Abundant Numbers
TheZwierzLF
50
42ms
4 days ago
Happy Numbers
TheZwierzLF
106
38ms
4 days ago
Poker
TheZwierzLF
459
36ms
4 days ago
Billiards
blaztoma
107
36ms
4 days ago
Transpose Sentence
TheZwierzLF
68
55ms
4 days ago
Christmas Trees
TheZwierzLF
66
37ms
4 days ago
Inventory Sequence
TheZwierzLF
53
51ms
4 days ago
Tower of Hanoi
TheZwierzLF
81
36ms
4 days ago
Billiards
TheZwierzLF
215
50ms
4 days ago
Pernicious Numbers
TheZwierzLF
62
45ms
4 days ago