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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
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
List of all puzzles
Tags
geometric mean
cryptic crossnumbers
prime numbers
multiplication
cards
cube numbers
irreducible numbers
products
surds
polynomials
balancing
unit fractions
shapes
menace
angles
games
sequences
dominos
arrows
geometry
axes
complex numbers
averages
shape
parabolas
clocks
probability
graphs
fractions
square grids
partitions
colouring
number
people maths
prime factors
factorials
sum to infinity
probabilty
grids
star numbers
cryptic clues
planes
matrices
powers
indices
differentiation
percentages
doubling
2d shapes
crosswords
books
dates
multiplaction squares
crossnumbers
sets
combinatorics
even numbers
dice
integers
algebra
christmas
xor
rectangles
taxicab geometry
binary
triangle numbers
odd numbers
gerrymandering
tangents
numbers
mean
decahedra
ellipses
folding tube maps
dodecagons
hexagons
quadratics
square roots
consecutive integers
circles
advent
quadrilaterals
pentagons
multiples
ave
calculus
sums
time
chocolate
factors
determinants
median
polygons
trigonometry
digital clocks
palindromes
logic
routes
bases
remainders
functions
scales
chalkdust crossnumber
the only crossnumber
digital products
range
lists
money
medians
squares
digits
perfect numbers
square numbers
volume
proportion
cubics
floors
spheres
geometric means
lines
triangles
means
rugby
coins
integration
neighbours
sport
albgebra
consecutive numbers
regular shapes
elections
addition
area
expansions
speed
tournaments
3d shapes
tiling
pascal's triangle
perimeter
chess
symmetry
coordinates
division
wordplay
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