The
Calendar
hole will go live in approximately
24 hours
. Why not try and solve it ahead of time?
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
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
Bytes
Time
Submitted
Abundant Numbers
TheZwierzLF
50
42ms
9 days ago
Abundant Numbers
moozzi
50
40ms
23 days ago
Abundant Numbers
Matter1024
46
60ms
14 Nov 2025
Abundant Numbers
AetherQuantity
56
36ms
21 Oct 2025
Abundant Numbers
Babafaba
46
37ms
15 Oct 2025
Abundant Numbers
blaztoma
🥉
45
37ms
13 Oct 2025
Abundant Numbers
snoozingnewt
49
38ms
9 Oct 2025
Abundant Numbers
CaedenHarper
168
35ms
16 Aug 2025
Abundant Numbers
csharpython
48
36ms
23 Jul 2025
Abundant Numbers
pardouin
🥉
45
38ms
10 Apr 2025
Abundant Numbers
paul-c-hartman
54
39ms
8 Mar 2025
Abundant Numbers
edsrzf
48
35ms
21 Jan 2025
Abundant Numbers
uncertaain
89
41ms
4 Dec 2024
Abundant Numbers
tatzyr
46
35ms
23 Oct 2024
Abundant Numbers
FlyingPenguin223
48
40ms
11 Oct 2024
Abundant Numbers
Mabeloid
168
37ms
18 Sep 2024
Abundant Numbers
LostSyntax21
51
39ms
16 Sep 2024
Abundant Numbers
dokutan
48
43ms
5 Sep 2024
Abundant Numbers
sean-niemann
🥉
45
36ms
25 Jul 2024
Abundant Numbers
catflip
56
39ms
9 Jul 2024
Abundant Numbers
error256
47
37ms
3 Jul 2024
Abundant Numbers
Just4FunCoder
48
37ms
2 Jul 2024
Abundant Numbers
Ralac07
56
38ms
18 Jun 2024
Abundant Numbers
DialFrost
🥉
45
36ms
3 Jun 2024
Abundant Numbers
aydamak
46
37ms
17 May 2024
Abundant Numbers
HumanoidCPU
168
42ms
17 May 2024
Abundant Numbers
qytiz
53
39ms
15 Apr 2024
Abundant Numbers
RuadhanKM
74
37ms
7 Mar 2024
Abundant Numbers
Yewzir
56
36ms
7 Feb 2024
Abundant Numbers
olleicua
46
36ms
2 Feb 2024
Abundant Numbers
arctouch-cristiannevianna
62
37ms
20 Oct 2023
Abundant Numbers
aaronze
49
36ms
21 Sep 2023
Abundant Numbers
annaproxy
51
37ms
8 Sep 2023
Abundant Numbers
msbranicky
85
36ms
7 Sep 2023
Abundant Numbers
rniii
48
39ms
21 Aug 2023
Abundant Numbers
4hg
51
39ms
11 Aug 2023
Abundant Numbers
Andriamanitra
46
37ms
13 Jul 2023
Abundant Numbers
lowie1803
56
40ms
22 Jun 2023
Abundant Numbers
ovs-code
🥉
45
37ms
9 May 2023
Abundant Numbers
m-tkach
🥇
42
45ms
22 Apr 2023
Abundant Numbers
Ogeima
54
41ms
13 Apr 2023
Abundant Numbers
ejini6969
52
37ms
26 Mar 2023
Abundant Numbers
DragonaireM
62
36ms
6 Feb 2023
Abundant Numbers
Ailko
57
35ms
3 Feb 2023
Abundant Numbers
StronkCheese
99
37ms
3 Feb 2023
Abundant Numbers
anter69
46
37ms
31 Jan 2023
Abundant Numbers
aksyristos
73
37ms
31 Jan 2023
Abundant Numbers
Steffan153
🥉
45
38ms
12 Jan 2023
Abundant Numbers
retrohun
168
35ms
27 Dec 2022
Abundant Numbers
fynnkroeger
53
39ms
10 Dec 2022
Abundant Numbers
sreedevk
56
37ms
4 Dec 2022
Abundant Numbers
stefangimmillaro
🥉
45
36ms
4 Dec 2022
Abundant Numbers
Lydxn
🥇
42
50ms
23 Nov 2022
Abundant Numbers
OhmNomNom
48
40ms
18 Oct 2022
Abundant Numbers
KatieLG
48
39ms
9 Oct 2022
Abundant Numbers
ls-samer-abuthaher
47
36ms
6 Oct 2022
Abundant Numbers
jared-hughes
50
39ms
20 Sep 2022
Abundant Numbers
galloj
51
38ms
17 Sep 2022
Abundant Numbers
MeWhenI
🥉
45
38ms
12 Aug 2022
Abundant Numbers
purp
55
38ms
11 Aug 2022
Abundant Numbers
yzhs
48
37ms
20 Jul 2022
Abundant Numbers
bryanmytko
67
36ms
2 Jul 2022
Abundant Numbers
fauresebast
53
37ms
28 Jun 2022
Abundant Numbers
KatieLG-Transpiler
168
37ms
24 Jun 2022
Abundant Numbers
janbehrens
56
38ms
30 May 2022
Abundant Numbers
nwellnhof
🥉
45
37ms
25 May 2022
Abundant Numbers
104210
104
37ms
19 May 2022
Abundant Numbers
jamespeilunli
57
42ms
1 May 2022
Abundant Numbers
orthoplex
48
37ms
31 Mar 2022
Abundant Numbers
radarek
🥉
45
41ms
17 Mar 2022
Abundant Numbers
Irratix
51
38ms
14 Feb 2022
Abundant Numbers
Shanethegamer
🥉
45
37ms
11 Feb 2022
Abundant Numbers
adoxography
46
36ms
20 Jan 2022
Abundant Numbers
akshatj27
🥉
45
37ms
11 Jan 2022
Abundant Numbers
emgordon154
46
37ms
20 Dec 2021
Abundant Numbers
lynn
47
36ms
2 Dec 2021
Abundant Numbers
ninjawarrior1337
67
37ms
30 Nov 2021
Abundant Numbers
HallMatthew314
55
38ms
26 Nov 2021
Abundant Numbers
Luj8n
53
39ms
12 Nov 2021
Abundant Numbers
janlelis
🥉
45
41ms
11 Nov 2021