More from Chalkdust
Twist and shout! …and we’re fresh out of shout*
Henry Jaspars tries to untangle a mixed-up drinks order7 ways to tell if a number is divisible by 7
Łukasz takes us on a tour through a surprisingly diverse range of algorithms to test for divisibility by 7Playing billiards with cue-bics
Yuliya Nesterova misses all the pockets, but does manage to solve some cubicsDear Dirichlet, Issue 07
Pigs, popes and produce are among the topics of discussion in this issue's Dear Dirichlet advice columnThe spider witch project
Constructing a spiderweb: in the spookiest and most horrific way possible!Why is it so hard to pull two phone books apart?
Take two phone books and interleave all their pages one by one. Now try and pull them apart by their spines. Impossible, right?