Puzzlebomb is a monthly puzzle compendium. Issue 42 of Puzzlebomb, for June 2015, can be found here: Puzzlebomb – Issue 42 – June 2015 The solutions to Issue 42 can be found here: Puzzlebomb – Issue 42 – June 2015 – Solutions Previous issues of Puzzlebomb, and their solutions, can be found here.
London MathsJam Recap, May 2015

I know I usually write up the goings-on at Manchester MathsJam, but since I spent much of the last month ‘In Residence’ at the University of Greenwich, I spent the second-to-last Tuesday evening of May at the London MathsJam. Here’s a summary of what transpired.
First Clay Award for Dissemination of Mathematical Knowledge goes to Etienne Ghys

The Clay Mathematics Institute is best known for handing out a cool million in return for answering a hard question, much like Chris Tarrant. Anyway, that’s not all they do! The Institute says it is “dedicated to increasing and disseminating mathematical knowledge”, and that now includes handing out an award for Dissemination of Mathematical Knowledge. The…
3Blue1Brown makes really clear videos about maths

3Blue1Brown is Grant Sanderson, who’s writing software to help make videos explaining maths. So far, it’s going pretty well!
Math Stack: a really pretty deck of cards with maths on

Math Stack is a deck of playing cards with mathematical artwork on the faces. The makers call it “a potent and effective learning tool”. I’m not convinced about that, but they are so pretty! So pretty!
Dr. Isomorpheus is a crazy mathematician

Nishika Bhatia wrote in to tell us about Dr. Isomorpheus, a webcomic about mathematicians. It’s full of weak puns of the “abelian grape” variety. You might like it! Read: Dr. Isomorpheus
I’ve made my own numbers-in-a-grid game

For the past couple of weeks, I’ve been obsessively playing the game Twenty on my phone. Then I decided to make my own game in a similar vein. The fact that my wife has consistently been ahead of my high scores has nothing to do with it.