The
Calendar
hole will go live in approximately
39 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
N Queens
dokutan
🥉
748
115ms
12 hours ago
N Queens
dokutan
699
61ms
2 days ago
N Queens
dokutan
699
126ms
2 days ago
N Queens
dokutan
724
406ms
2 days ago
N Queens
JOrE20
203
12ms
2 days ago
N Queens
Yax42
179
404ms
3 days ago
N Queens
albanian-laundromat
🥈
182
47ms
5 days ago
N Queens
edsrzf
🥈
121
156ms
8 days ago
N Queens
TheZwierzLF
120
76ms
8 days ago
N Queens
blaztoma
🥈
83
119ms
10 days ago
N Queens
blaztoma
148
39ms
10 days ago
N Queens
albanian-laundromat
🥈
148
28ms
11 days ago
N Queens
canissimia
💎
97
68ms
14 days ago
N Queens
YAJUE114514
159
14ms
16 days ago
N Queens
emgordon154
🥈
172
197ms
16 days ago
N Queens
dokutan
802
239ms
17 days ago
N Queens
dokutan
806
391ms
17 days ago
N Queens
dokutan
701
63ms
17 days ago
N Queens
dokutan
🥉
715
96ms
17 days ago
N Queens
MeWhenI
122
493ms
18 days ago
N Queens
dokutan
672
796ms
19 days ago
N Queens
Lv0Sys
126
10ms
20 days ago
N Queens
ovs-code
💎
111
5ms
20 days ago
N Queens
TheZwierzLF
173
595ms
21 days ago
N Queens
TheZwierzLF
187
37ms
21 days ago
N Queens
KasperKivimaeki
172
444ms
21 days ago
N Queens
KasperKivimaeki
132
2ms
22 days ago
N Queens
KasperKivimaeki
146
14ms
22 days ago
N Queens
HumanoidCPU
1,299
284ms
23 days ago
N Queens
HumanoidCPU
1,837
2ms
23 days ago
N Queens
dokutan
952
331ms
24 days ago
N Queens
snoozingnewt
232
431ms
24 days ago
N Queens
edsrzf
💎
163
103ms
24 days ago
N Queens
Shanethegamer
1,266
120ms
26 days ago
N Queens
Carlos-EAC
1,436
1,000ms
27 days ago
N Queens
Carlos-EAC
1,401
10ms
27 days ago
N Queens
dokutan
674
2ms
27 days ago
N Queens
CaedenHarper
1,415
108ms
1 Dec 2025
N Queens
ethanlally
232
620ms
1 Dec 2025
N Queens
HumanoidCPU
1,392
7ms
1 Dec 2025
N Queens
KatieLG
🥉
1,178
1,233ms
30 Nov 2025
N Queens
KatieLG
1,162
116ms
30 Nov 2025
N Queens
KatieLG
1,128
8ms
30 Nov 2025
N Queens
KatieLG
1,172
92ms
30 Nov 2025
N Queens
KatieLG
1,171
651ms
30 Nov 2025
N Queens
KatieLG
1,137
122ms
30 Nov 2025
N Queens
KatieLG
1,186
280ms
30 Nov 2025
N Queens
KatieLG
1,184
158ms
30 Nov 2025
N Queens
KatieLG
1,213
71ms
30 Nov 2025
N Queens
KatieLG
1,189
217ms
30 Nov 2025
N Queens
KatieLG
1,311
606ms
30 Nov 2025
N Queens
KatieLG
🥉
1,091
3ms
30 Nov 2025
N Queens
KatieLG
1,209
6ms
30 Nov 2025
N Queens
KatieLG
1,172
3,128ms
30 Nov 2025
N Queens
KatieLG
1,180
8ms
30 Nov 2025
N Queens
KatieLG
1,206
376ms
30 Nov 2025
N Queens
KatieLG
1,253
258ms
30 Nov 2025
N Queens
KatieLG
1,210
102ms
30 Nov 2025
N Queens
KatieLG
1,175
369ms
30 Nov 2025
N Queens
KatieLG
1,133
757ms
30 Nov 2025
N Queens
KatieLG
1,172
18ms
30 Nov 2025
N Queens
KatieLG
1,251
1ms
30 Nov 2025
N Queens
KatieLG
1,193
132ms
30 Nov 2025
N Queens
h3ra993huskp
296
532ms
30 Nov 2025
N Queens
tomh1012
338
1,315ms
28 Nov 2025
N Queens
targrik
195
59ms
28 Nov 2025
N Queens
HumanoidCPU
1,281
51ms
28 Nov 2025
N Queens
FortuiteMan
166
31ms
27 Nov 2025
N Queens
FortuiteMan
121
79ms
27 Nov 2025
N Queens
JOrE20
1,377
26ms
27 Nov 2025
N Queens
ndren
151
19ms
27 Nov 2025
N Queens
bizy-coder
111
506ms
26 Nov 2025
N Queens
MeWhenI
143
13ms
25 Nov 2025
N Queens
vhoulbreque
238
12ms
24 Nov 2025
N Queens
CornerMercury
132
11ms
24 Nov 2025
N Queens
KatieLG
1,256
2ms
21 Nov 2025
N Queens
KatieLG
1,401
2ms
21 Nov 2025
N Queens
KatieLG
1,435
8ms
21 Nov 2025
N Queens
snoozingnewt
152
709ms
21 Nov 2025
N Queens
snoozingnewt
191
106ms
21 Nov 2025