The
Calendar
hole will go live in approximately
3 days
. 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
Gijswijt’s Sequence
blaztoma
85
11ms
10 hours ago
Gijswijt’s Sequence
blaztoma
86
619ms
21 hours ago
Gijswijt’s Sequence
blaztoma
195
126ms
21 hours ago
Gijswijt’s Sequence
dokutan
149
59ms
23 hours ago
Gijswijt’s Sequence
dokutan
149
119ms
23 hours ago
Gijswijt’s Sequence
dokutan
164
423ms
26 hours ago
Gijswijt’s Sequence
TheZwierzLF
110
152ms
2 days ago
Gijswijt’s Sequence
Shanethegamer
2,020
3ms
3 days ago
Gijswijt’s Sequence
Yax42
139
384ms
7 days ago
Gijswijt’s Sequence
ovs-code
103
129ms
8 days ago
Gijswijt’s Sequence
AlephSquirrel
75
1,170ms
10 days ago
Gijswijt’s Sequence
JOrE20
4,327
3ms
11 days ago
Gijswijt’s Sequence
rucin93
🥈
99
5ms
11 days ago
Gijswijt’s Sequence
gigaprofisi
189
136ms
11 days ago
Gijswijt’s Sequence
ravnskjaer
318
2,808ms
13 days ago
Gijswijt’s Sequence
edsrzf
🥉
148
1,656ms
14 days ago
Gijswijt’s Sequence
dokutan
129
61ms
16 days ago
Gijswijt’s Sequence
dokutan
🥈
143
97ms
16 days ago
Gijswijt’s Sequence
Maashau
2,016
2ms
16 days ago
Gijswijt’s Sequence
bizy-coder
83
11ms
17 days ago
Gijswijt’s Sequence
ovs-code
💎
85
148ms
20 days ago
Gijswijt’s Sequence
Lv0Sys
384
576ms
20 days ago
Gijswijt’s Sequence
Lv0Sys
77
1,738ms
20 days ago
Gijswijt’s Sequence
HumanoidCPU
2,053
265ms
21 days ago
Gijswijt’s Sequence
HumanoidCPU
5,999
2ms
21 days ago
Gijswijt’s Sequence
dokutan
144
765ms
22 days ago
Gijswijt’s Sequence
emgordon154
158
99ms
23 days ago
Gijswijt’s Sequence
DialFrost
🥉
144
116ms
23 days ago
Gijswijt’s Sequence
Shanethegamer
1,034
96ms
24 days ago
Gijswijt’s Sequence
JOrE20
252
2ms
25 days ago
Gijswijt’s Sequence
JOrE20
170
41ms
25 days ago
Gijswijt’s Sequence
JOrE20
293
1ms
25 days ago
Gijswijt’s Sequence
tomh1012
150
301ms
25 days ago
Gijswijt’s Sequence
tomh1012
192
484ms
25 days ago
Gijswijt’s Sequence
dokutan
🥈
114
3ms
25 days ago
Gijswijt’s Sequence
rucin93
69
1,742ms
25 days ago
Gijswijt’s Sequence
CaedenHarper
3,021
110ms
26 days ago
Gijswijt’s Sequence
dokutan
106
1,757ms
27 days ago
Gijswijt’s Sequence
HumanoidCPU
2,998
7ms
27 days ago
Gijswijt’s Sequence
KatieLG
249
1,255ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
218
94ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
209
11ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
243
95ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
242
623ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
218
114ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
257
284ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
252
172ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
258
65ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
260
197ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
416
621ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
176
2ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
278
5ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
243
2,912ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
277
412ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
306
261ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
279
111ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
231
352ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
277
16ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
314
1ms
30 Nov 2025
Gijswijt’s Sequence
KatieLG
247
129ms
30 Nov 2025
Gijswijt’s Sequence
h3ra993huskp
137
515ms
30 Nov 2025
Gijswijt’s Sequence
Andrey2001
118
11ms
29 Nov 2025
Gijswijt’s Sequence
edsrzf
💎
141
105ms
28 Nov 2025
Gijswijt’s Sequence
HumanoidCPU
2,035
56ms
28 Nov 2025
Gijswijt’s Sequence
emgordon154
🥈
292
1,684ms
26 Nov 2025
Gijswijt’s Sequence
dokutan
134
2ms
25 Nov 2025
Gijswijt’s Sequence
Babafaba
94
515ms
25 Nov 2025
Gijswijt’s Sequence
Babafaba
96
214ms
25 Nov 2025
Gijswijt’s Sequence
CornerMercury
106
570ms
23 Nov 2025
Gijswijt’s Sequence
GrayJoKing
93
8ms
23 Nov 2025
Gijswijt’s Sequence
TheZwierzLF
124
731ms
22 Nov 2025
Gijswijt’s Sequence
KatieLG
2,010
2ms
21 Nov 2025
Gijswijt’s Sequence
KatieLG
3,007
2ms
21 Nov 2025
Gijswijt’s Sequence
KatieLG
3,041
4ms
21 Nov 2025
Gijswijt’s Sequence
snoozingnewt
161
115ms
20 Nov 2025
Gijswijt’s Sequence
Seek64
83
10ms
20 Nov 2025
Gijswijt’s Sequence
KasperKivimaeki
163
459ms
19 Nov 2025
Gijswijt’s Sequence
dokutan
2,764
40ms
18 Nov 2025
Gijswijt’s Sequence
dahrens
143
839ms
18 Nov 2025
Gijswijt’s Sequence
KatieLG
228
63ms
18 Nov 2025