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
λ
ndren
670
4ms
29 hours ago
λ
dokutan
662
130ms
3 days ago
λ
dokutan
662
60ms
3 days ago
λ
dokutan
752
405ms
3 days ago
λ
mwarvik
1,020
354ms
6 days ago
λ
kmathis22
523
176ms
7 days ago
λ
kmathis22
540
71ms
7 days ago
λ
kmathis22
548
100ms
7 days ago
λ
kmathis22
429
1,817ms
7 days ago
λ
amazingalek
1,020
331ms
8 days ago
λ
amazingalek
1,011
10ms
8 days ago
λ
JOrE20
1,008
143ms
8 days ago
λ
JOrE20
1,014
6ms
8 days ago
λ
JOrE20
1,006
3ms
8 days ago
λ
emgordon154
💎
376
2,170ms
8 days ago
λ
JOrE20
922
5ms
10 days ago
λ
CornerMercury
183
47ms
11 days ago
λ
sean-niemann
💎
561
4ms
12 days ago
λ
JOrE20
441
98ms
15 days ago
λ
dokutan
665
66ms
18 days ago
λ
JOrE20
2,007
3ms
18 days ago
λ
JOrE20
1,011
7ms
18 days ago
λ
JOrE20
1,014
9ms
18 days ago
λ
JOrE20
1,004
2,516ms
18 days ago
λ
JOrE20
1,013
66ms
18 days ago
λ
JOrE20
1,012
38ms
18 days ago
λ
JOrE20
1,011
151ms
18 days ago
λ
JOrE20
1,008
13ms
18 days ago
λ
JOrE20
1,009
2ms
18 days ago
λ
JOrE20
1,008
105ms
18 days ago
λ
JOrE20
1,008
5ms
18 days ago
λ
JOrE20
1,007
3ms
18 days ago
λ
JOrE20
1,018
2ms
18 days ago
λ
JOrE20
1,023
108ms
18 days ago
λ
dokutan
579
90ms
18 days ago
λ
rucin93
199
54ms
18 days ago
λ
kurkale6ka
1,003
56ms
19 days ago
λ
Maashau
1,019
2ms
19 days ago
λ
dokutan
697
819ms
20 days ago
λ
edsrzf
181
46ms
20 days ago
λ
sean-niemann
192
53ms
21 days ago
λ
JayXon
💎
291
624ms
21 days ago
λ
edsrzf
💎
229
69ms
22 days ago
λ
kg583
🥈
237
4,664ms
22 days ago
λ
edsrzf
💎
191
4,573ms
22 days ago
λ
edsrzf
🥈
293
1,317ms
22 days ago
λ
edsrzf
💎
202
1,470ms
22 days ago
λ
edsrzf
💎
156
1,920ms
22 days ago
λ
edsrzf
🥉
229
1,463ms
22 days ago
λ
edsrzf
144
75ms
22 days ago
λ
sean-niemann
🥉
190
201ms
22 days ago
λ
kg583
🥉
237
3,127ms
22 days ago
λ
zacjl
🥈
213
3,842ms
22 days ago
λ
emgordon154
🥈
319
177ms
22 days ago
λ
edsrzf
💎
244
2,846ms
22 days ago
λ
edsrzf
199
23ms
22 days ago
λ
edsrzf
💎
228
97ms
22 days ago
λ
sean-niemann
🥈
239
194ms
22 days ago
λ
edsrzf
💎
278
130ms
22 days ago
λ
sean-niemann
🥈
239
925ms
22 days ago
λ
sean-niemann
🥈
216
684ms
22 days ago
λ
sean-niemann
🥈
176
2,466ms
23 days ago
λ
edsrzf
💎
222
32ms
23 days ago
λ
snoozingnewt
🥉
370
131ms
23 days ago
λ
albanian-laundromat
573
100ms
23 days ago
λ
JOrE20
1,002
138ms
23 days ago
λ
JOrE20
1,008
3ms
23 days ago
λ
Shanethegamer
1,006
1ms
24 days ago
λ
HumanoidCPU
1,006
1ms
24 days ago
λ
sean-niemann
164
147ms
25 days ago
λ
sean-niemann
178
530ms
25 days ago
λ
sean-niemann
178
143ms
25 days ago
λ
HumanoidCPU
1,086
10ms
26 days ago
λ
JOrE20
944
9ms
27 days ago
λ
JOrE20
946
42ms
27 days ago
λ
prestosilver
1,019
1ms
27 days ago
λ
dokutan
702
3ms
27 days ago
λ
Yax42
394
464ms
2 Dec 2025
λ
CaedenHarper
1,025
102ms
1 Dec 2025
λ
Lv0Sys
212
1,742ms
1 Dec 2025