7

Uncertain outcomes are associated with circle $\Sigma^\prime$ (which overlaps a basin boundary) but not with circle $\Sigma$.

Matthew is a postdoctoral researcher at the University of Cambridge. He hasn’t had time to play Klax since the noughties, but he’s pretty sure that Coke is it!

• My favourite LaTeX package

The Chalkdust editors share some of their favourites
• On the cover: cellular automata

Discover the meaning of the coloured squares on the cover of issue 13
• Oπnions: Should I share my code?

Scroggs debates whether sharing truly is caring
• Crossnumber winners, issue 11

Did you solve it?
• Chalkdust issue 11 puzzle hunt #1

Matthew Scroggs sets the first puzzle. Can you solve it?
• Crossnumber winners, issue 10

Did you solve it?