More from Chalkdust
The problem with addition
It doesn’t add up for Patrick CreaghCrossnumber winners, Issue 17
Did you solve it?An Introduction to the Math of Voting Methods
We review the second of this year’s nominees for the Book of the YearHow to Read Numbers
We review the second of this year's nominees for the Book of the YearChristmas conundrum #3
Try our nonograms! And remember, not all puzzles have a unique solution...How to make: a hyperbolic plane
A great way to waste a lot of paper