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
Topological Sort
snoozingnewt
209
467ms
2 hours ago
Topological Sort
snoozingnewt
112
678ms
2 hours ago
Topological Sort
snoozingnewt
124
50ms
2 hours ago
Topological Sort
edsrzf
113
26ms
13 hours ago
Topological Sort
Mukundan314
💎
90
1,223ms
3 days ago
Topological Sort
snoozingnewt
💎
166
116ms
4 days ago
Topological Sort
dokutan
263
13ms
4 days ago
Topological Sort
CLOStrophobic
🥉
189
58ms
6 days ago
Topological Sort
Lv0Sys
171
14ms
6 days ago
Topological Sort
weliveinhell
172
13ms
7 days ago
Topological Sort
GrayJoKing
💎
120
16ms
7 days ago
Topological Sort
Natanaelel
🥇
132
195ms
8 days ago
Topological Sort
DialFrost
🥈
240
416ms
9 days ago
Topological Sort
rucin93
100
17ms
10 days ago
Topological Sort
sean-niemann
💎
135
183ms
11 days ago
Topological Sort
sean-niemann
131
35ms
11 days ago
Topological Sort
sean-niemann
114
640ms
11 days ago
Topological Sort
sean-niemann
129
60ms
11 days ago
Topological Sort
sean-niemann
🥈
196
1,768ms
12 days ago
Topological Sort
snoozingnewt
🦄
323
42ms
17 days ago
Topological Sort
snoozingnewt
💎
226
1,038ms
17 days ago
Topological Sort
blaztoma
122
15ms
18 days ago
Topological Sort
Emutis
122
15ms
18 days ago
Topological Sort
Lv0Sys
145
137ms
18 days ago
Topological Sort
OllieBoyne
200
15ms
19 days ago
Topological Sort
luuumine
311
16ms
20 days ago
Topological Sort
Artemis21
187
72ms
24 days ago
Topological Sort
rhdqor213
161
4ms
24 days ago
Topological Sort
edsrzf
🥈
170
612ms
24 days ago
Topological Sort
albanian-laundromat
🥈
569
56ms
25 days ago
Topological Sort
sean-niemann
🥉
200
416ms
25 days ago
Topological Sort
sean-niemann
202
514ms
25 days ago
Topological Sort
tomtheisen
🥈
143
636ms
25 days ago
Topological Sort
KatieLG
💎
762
2,305ms
27 days ago
Topological Sort
IISResetMe
362
1,293ms
27 days ago
Topological Sort
JOrE20
374
13ms
2 Dec 2025
Topological Sort
albanian-laundromat
🥉
276
2,160ms
30 Nov 2025
Topological Sort
h3ra993huskp
341
819ms
30 Nov 2025
Topological Sort
MeWhenI
92
47ms
29 Nov 2025
Topological Sort
MeWhenI
💎
119
48ms
29 Nov 2025
Topological Sort
Kacarott
💎
133
69ms
28 Nov 2025
Topological Sort
blaztoma
🥉
264
155ms
28 Nov 2025
Topological Sort
AidanWalter
1,078
15ms
28 Nov 2025
Topological Sort
ndren
🥈
2,498
3,353ms
27 Nov 2025
Topological Sort
KasperKivimaeki
122
170ms
26 Nov 2025
Topological Sort
KasperKivimaeki
🥈
247
279ms
26 Nov 2025
Topological Sort
albanian-laundromat
💎
307
1,002ms
25 Nov 2025
Topological Sort
FortuiteMan
137
18ms
25 Nov 2025
Topological Sort
MeWhenI
💎
332
132ms
25 Nov 2025
Topological Sort
albanian-laundromat
💎
244
315ms
25 Nov 2025
Topological Sort
MeWhenI
193
946ms
25 Nov 2025
Topological Sort
edsrzf
🥈
139
13ms
25 Nov 2025
Topological Sort
snoozingnewt
🥉
337
283ms
23 Nov 2025
Topological Sort
guilhem-roy
203
18ms
22 Nov 2025
Topological Sort
snoozingnewt
🥈
129
323ms
22 Nov 2025
Topological Sort
DialFrost
🥉
131
133ms
22 Nov 2025
Topological Sort
albanian-laundromat
💎
228
68ms
20 Nov 2025
Topological Sort
2bular
🥈
52
35ms
20 Nov 2025
Topological Sort
snoozingnewt
🥉
198
1,869ms
20 Nov 2025
Topological Sort
KasperKivimaeki
🥈
182
2,501ms
20 Nov 2025
Topological Sort
DialFrost
359
472ms
19 Nov 2025
Topological Sort
m-tkach
77
2,782ms
19 Nov 2025
Topological Sort
lukegustafson
🥉
93
89ms
19 Nov 2025
Topological Sort
Mukundan314
🥉
93
88ms
19 Nov 2025
Topological Sort
emgordon154
152
44ms
18 Nov 2025
Topological Sort
emgordon154
121
723ms
18 Nov 2025
Topological Sort
emgordon154
132
153ms
18 Nov 2025
Topological Sort
xsot
💎
83
899ms
18 Nov 2025
Topological Sort
CaedenHarper
387
319ms
17 Nov 2025
Topological Sort
edsrzf
💎
156
437ms
16 Nov 2025
Topological Sort
MeWhenI
128
580ms
16 Nov 2025
Topological Sort
edsrzf
💎
127
325ms
15 Nov 2025
Topological Sort
edsrzf
💎
156
127ms
14 Nov 2025
Topological Sort
GrayJoKing
73
118ms
14 Nov 2025
Topological Sort
albanian-laundromat
💎
140
4,875ms
14 Nov 2025
Topological Sort
GrayJoKing
💎
120
12ms
14 Nov 2025
Topological Sort
edsrzf
🥈
132
415ms
14 Nov 2025
Topological Sort
kg583
🥈
132
125ms
14 Nov 2025
Topological Sort
robin-scragg
327
16ms
13 Nov 2025
Topological Sort
GrayJoKing
💎
57
673ms
11 Nov 2025