Click here to win prizes by solving the puzzle Advent calendar.
Click here to win prizes by solving the puzzle Advent calendar.


Advent calendar 2015

1 December

What is area of the largest area rectangle which will fit in a circle of radius 10?

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Sunday Afternoon Maths LXVII

Coloured weights
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Advent calendar 2018

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Cryptic crossnumber #2

Sunday Afternoon Maths LXV

Cryptic crossnumber #1
Breaking Chocolate
Square and cube endings

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