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Advent calendar 2017
14 December
All 2017 advent puzzles
~
More information
There are
204 squares (of any size) in an 8×8 grid of squares
. Today's number is the number of squares in a 13×13 grid of squares
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819
Tags:
square numbers
,
squares
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Archive
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Most recent collections
Advent calendar 2025
Advent calendar 2024
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Advent calendar 2022
List of all puzzles
Tags
games
indices
trigonometry
geometric mean
tangents
sums
grids
shape
sets
multiplaction squares
consecutive integers
integration
calculus
perimeter
geometric means
angles
factorials
binary
lists
clocks
consecutive numbers
perfect numbers
bases
median
2d shapes
dates
even numbers
unit fractions
tournaments
tiling
determinants
irreducible numbers
complex numbers
books
integers
surds
spheres
averages
logic
money
expansions
matrices
graphs
ellipses
mean
star numbers
crosswords
cryptic clues
albgebra
balancing
division
taxicab geometry
axes
quadratics
ave
people maths
means
gerrymandering
rugby
fractions
menace
digital products
medians
xor
rectangles
triangle numbers
chocolate
advent
odd numbers
cubics
area
functions
digital clocks
products
regular shapes
dice
dodecagons
combinatorics
cryptic crossnumbers
3d shapes
remainders
numbers
differentiation
doubling
chalkdust crossnumber
polynomials
prime factors
square grids
lines
range
volume
elections
prime numbers
hexagons
polygons
scales
sport
pascal's triangle
square roots
shapes
parabolas
neighbours
dominos
decahedra
pentagons
wordplay
multiplication
probabilty
chess
colouring
coins
algebra
sum to infinity
triangles
geometry
crossnumbers
number
palindromes
coordinates
powers
sequences
time
digits
arrows
partitions
planes
addition
percentages
symmetry
cards
cube numbers
probability
floors
multiples
the only crossnumber
folding tube maps
circles
squares
proportion
christmas
routes
quadrilaterals
square numbers
factors
speed
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