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Advent calendar 2015
3 December
All 2015 advent puzzles
~
More information
In August, I wrote about
MENACE
, a machine learning robot built from matchboxes which plays noughts and crosses. How many matchboxes are needed to build MENACE?
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304
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menace
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Most recent collections
Advent calendar 2025
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List of all puzzles
Tags
wordplay
scales
even numbers
chocolate
sum to infinity
palindromes
median
taxicab geometry
surds
books
fractions
angles
numbers
calculus
irreducible numbers
expansions
floors
unit fractions
routes
multiples
advent
chess
odd numbers
tiling
combinatorics
people maths
dominos
percentages
medians
tournaments
range
addition
planes
probabilty
circles
ave
division
number
money
shapes
grids
doubling
partitions
decahedra
tangents
geometric means
perimeter
sets
crossnumbers
parabolas
lines
cryptic crossnumbers
indices
factorials
quadratics
sums
regular shapes
pentagons
graphs
squares
arrows
perfect numbers
digits
determinants
trigonometry
consecutive integers
pascal's triangle
integration
colouring
menace
dates
lists
mean
dice
elections
star numbers
averages
square roots
triangle numbers
geometric mean
cryptic clues
hexagons
shape
dodecagons
area
polynomials
cubics
coins
speed
binary
xor
complex numbers
chalkdust crossnumber
gerrymandering
neighbours
digital clocks
coordinates
cube numbers
integers
balancing
differentiation
2d shapes
square grids
prime numbers
symmetry
square numbers
consecutive numbers
the only crossnumber
rectangles
time
folding tube maps
axes
quadrilaterals
remainders
probability
matrices
algebra
3d shapes
prime factors
sequences
albgebra
games
multiplication
products
factors
functions
digital products
sport
bases
rugby
christmas
crosswords
spheres
powers
polygons
volume
multiplaction squares
clocks
triangles
proportion
logic
geometry
ellipses
cards
means
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