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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
Tags:
menace
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Archive
Show me a random puzzle
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Most recent collections
Advent calendar 2025
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
List of all puzzles
Tags
chalkdust crossnumber
people maths
elections
pentagons
shapes
digital clocks
dominos
shape
rugby
powers
the only crossnumber
sum to infinity
percentages
bases
neighbours
coins
unit fractions
lists
floors
polynomials
products
quadrilaterals
ave
even numbers
coordinates
multiplication
cubics
dodecagons
crossnumbers
factors
spheres
geometry
axes
odd numbers
advent
functions
multiplaction squares
triangles
chocolate
square roots
planes
parabolas
addition
balancing
hexagons
averages
3d shapes
crosswords
triangle numbers
probability
prime numbers
tangents
clocks
logic
gerrymandering
routes
number
speed
trigonometry
polygons
means
cryptic crossnumbers
star numbers
money
arrows
symmetry
folding tube maps
scales
expansions
angles
probabilty
determinants
square numbers
volume
differentiation
ellipses
sport
tiling
factorials
chess
complex numbers
grids
tournaments
integration
decahedra
digital products
integers
square grids
circles
books
indices
quadratics
binary
division
area
geometric mean
colouring
consecutive integers
graphs
palindromes
multiples
xor
sequences
proportion
median
regular shapes
albgebra
games
wordplay
menace
cards
medians
pascal's triangle
algebra
combinatorics
geometric means
numbers
digits
range
doubling
fractions
matrices
calculus
remainders
partitions
taxicab geometry
christmas
prime factors
consecutive numbers
mean
sets
time
dice
irreducible numbers
squares
sums
cube numbers
surds
perimeter
dates
2d shapes
cryptic clues
perfect numbers
rectangles
lines
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