The
Calendar
hole will go live in approximately
36 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
Chars
Time
Submitted
Odious Numbers (Long)
NoneTheFewer
111
294ms
2 days ago
Odious Numbers (Long)
HumanoidCPU
1,013
591ms
3 days ago
Odious Numbers (Long)
dokutan
75
5ms
3 days ago
Odious Numbers (Long)
NoneTheFewer
82
16ms
4 days ago
Odious Numbers (Long)
michelebastione
53
11ms
5 days ago
Odious Numbers (Long)
Shanethegamer
1,965
3ms
5 days ago
Odious Numbers (Long)
emgordon154
🥇
120
1,707ms
5 days ago
Odious Numbers (Long)
JOrE20
50
9ms
8 days ago
Odious Numbers (Long)
TheZwierzLF
44
46ms
8 days ago
Odious Numbers (Long)
DialFrost
47
2ms
11 days ago
Odious Numbers (Long)
AdrienHache
43
19ms
12 days ago
Odious Numbers (Long)
targrik
43
85ms
13 days ago
Odious Numbers (Long)
dokutan
52
2,759ms
14 days ago
Odious Numbers (Long)
DialFrost
54
42ms
15 days ago
Odious Numbers (Long)
ovs-code
🥉
41
63ms
16 days ago
Odious Numbers (Long)
snoozingnewt
🥉
79
92ms
16 days ago
Odious Numbers (Long)
dokutan
148
92ms
17 days ago
Odious Numbers (Long)
yujh-yujh
47
18ms
17 days ago
Odious Numbers (Long)
Maashau
80
2ms
17 days ago
Odious Numbers (Long)
Lydxn
🥇
62
341ms
18 days ago
Odious Numbers (Long)
snoozingnewt
43
62ms
18 days ago
Odious Numbers (Long)
snoozingnewt
54
138ms
18 days ago
Odious Numbers (Long)
snoozingnewt
43
38ms
18 days ago
Odious Numbers (Long)
snoozingnewt
70
365ms
18 days ago
Odious Numbers (Long)
snoozingnewt
🥇
49
103ms
18 days ago
Odious Numbers (Long)
snoozingnewt
31
775ms
18 days ago
Odious Numbers (Long)
dpethes
71
25ms
19 days ago
Odious Numbers (Long)
KasperKivimaeki
49
6ms
19 days ago
Odious Numbers (Long)
Mukundan314
54
2ms
19 days ago
Odious Numbers (Long)
rhdqor213
💎
50
2ms
19 days ago
Odious Numbers (Long)
snoozingnewt
41
249ms
20 days ago
Odious Numbers (Long)
snoozingnewt
56
8ms
21 days ago
Odious Numbers (Long)
snoozingnewt
18
51ms
21 days ago
Odious Numbers (Long)
m-tkach
54
2ms
21 days ago
Odious Numbers (Long)
CornerMercury
15
2ms
21 days ago
Odious Numbers (Long)
snoozingnewt
🥇
48
14ms
22 days ago
Odious Numbers (Long)
Lv0Sys
42
334ms
22 days ago
Odious Numbers (Long)
Lv0Sys
42
42ms
22 days ago
Odious Numbers (Long)
Lv0Sys
47
11ms
22 days ago
Odious Numbers (Long)
Lv0Sys
73
2ms
22 days ago
Odious Numbers (Long)
Lv0Sys
50
10ms
22 days ago
Odious Numbers (Long)
HumanoidCPU
1,998
275ms
23 days ago
Odious Numbers (Long)
HumanoidCPU
3,944
2ms
23 days ago
Odious Numbers (Long)
GolfingSuccess
🥇
78
158ms
24 days ago
Odious Numbers (Long)
emgordon154
🥇
78
106ms
24 days ago
Odious Numbers (Long)
albanian-laundromat
195
12ms
24 days ago
Odious Numbers (Long)
ryyyn
🥇
41
10ms
26 days ago
Odious Numbers (Long)
snoozingnewt
🥇
20
33ms
26 days ago
Odious Numbers (Long)
albanian-laundromat
73
29ms
27 days ago
Odious Numbers (Long)
albanian-laundromat
84
248ms
27 days ago
Odious Numbers (Long)
madeforlosers
88
39ms
27 days ago
Odious Numbers (Long)
DialFrost
🥉
79
102ms
2 Dec 2025
Odious Numbers (Long)
CaedenHarper
2,466
109ms
1 Dec 2025
Odious Numbers (Long)
AdrienHache
🥇
14
6ms
1 Dec 2025
Odious Numbers (Long)
TheAtrossian
53
12ms
1 Dec 2025
Odious Numbers (Long)
AdrienHache
53
2ms
1 Dec 2025
Odious Numbers (Long)
HumanoidCPU
2,443
7ms
1 Dec 2025
Odious Numbers (Long)
KasperKivimaeki
🥇
62
404ms
1 Dec 2025
Odious Numbers (Long)
pardouin
40
691ms
1 Dec 2025
Odious Numbers (Long)
aditsu
12
113ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,658
1,223ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,641
108ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,612
16ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,652
94ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,651
622ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,621
83ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,666
283ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,663
175ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,705
76ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,669
218ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,581
3ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,695
6ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,652
3,153ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,686
374ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,741
254ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,694
107ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,675
31ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,743
2ms
30 Nov 2025
Odious Numbers (Long)
KatieLG
1,679
131ms
30 Nov 2025
Odious Numbers (Long)
09cf
52
2ms
30 Nov 2025