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Looking back at puzzles about complex numbers, tic-tac-toe, and the Eggnog Mystery

What is the probability that d+2 random points in d-dimensional space form a convex body? Investigating an old problem using modern methods.

Win £100 of Maths Gear goodies by solving our famously fiendish crossnumber

Tuesday 11 October, 7.15pm. Come along! Featuring hundreds of free copies of Chalkdust, free pizza, and the chance to purchase a Chalkdust T-shirt.

While we work on issue 2

Ghostbusting with graph theory