Read Issue 23 now!

Join us in welcoming Issue 23 to the world! Enjoy the articles online or scroll down to view the magazine as a PDF. ✉️ You can also order a printed copy to your door, just paying P&P. 🚨 Why not sign up to our new issue notifications? ✍️ Fancy writing something for us? Send us something fun by the end of July for the lucky Issue 24! Features In conversation with Anne Skeldon Sam Kay and Ellen Jolley race against the body clock with the University of Surrey professorOn the cover: A new puzzle every day Matthew Scroggs puts polyominoes inside polygonsCheating at Tetris Ffreuer Bristow works out which pieces can force someone to loseThe secret life of words Barry Pawlik builds words and sentences from doublesCoffee problems Patrick Hedfeld has bean there, modelled thatSolving a cubic in 1646 Elinor Flavell takes squaring the circle to another levelThe beautiful soaisu partition Kenichi Takemura uncovers symmetries hidden in plain sightOrder, order! Louie Leventhall chunters from a sedentary positionTaking the sting out of wicked problems Isabel Harrison and Quinn Thomazin were busy bees last summerSignificant figures: Emmy Noether Not a-Noether one! Sonia Balan can't stand this. Fun Dear Dirichlet, Issue 23 Travel, trade and Tony Blackburn pepper the prof's postbag this issueComic: Introduction to catalysis If you'll open your textbook to page... oh, the cat's sitting on itWhat’s hot and what’s not, Issue 23 Fashion is fleeting, Chalkdust regulars are not.The big argument: 6 or 7? ✋ Which is best? 🤚Which generation are you? Always banging on about how numbers were better in the good old days? Take our quiz to find out how old you really are…The Chalkdust guide to: Citation metrics Confused by other academics telling you about their h-index? Then this handy guide may be just what you need!Cryptic crossword, Issue 23 Can you solve it?Top Ten: puzzles The undisputed top ten puzzles this seasonA mathematician’s guide to Leiden Stranded in the Netherlands? This guide will keep you busyPrize crossnumber, Issue 23 Win £100 of MathsGear goodies with our famously fiendish crossnumberBook of the Year 2025 For the first time in Chalkdust history, we have a double winnerWhich musical are you? Find out by using our simple flowchart Pingback: The Mathematicians' Library wins Chalkdust Book of the Year - TWICE