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More from Chalkdust
Spam calls and number blocking
Michael Wendl really wants those spammers to stop calling him
Formal sums
Nik Alexandrakis explains what they are and what they can tell us
Chalkdust issue 15 – Coming 25 May
Roll up, roll up! Squid Game, hidden harmonies and DnD coming your way in Issue 15. (Plus all the usual nonsense.)
Chalkdust issue 13 – Coming 1 May
A great start to the month of Maying
Prize crossnumber, Issue 07
Win £100 of Maths Gear goodies by solving our famously fiendish crossnumber
Optimal Pac-Man
Ghostbusting with graph theory