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