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