More from Chalkdust
Dear Dirichlet, Issue 18
Phone assistants, duplicating pastries, and being a 10 anywhere else are among the topics of discussion in this issue's Dear Dirichlet advice column
Significant figures: David Singmaster (1938–2023)
Colin Wright remembers the puzzle giant with a passion for sharing
Christmas conundrum #1
Solve this and you could be the lucky winner of a Chalkdust T-shirt
How to tile a chessboard
Introducing polyominoes
Victorian maths tricks with old money
Exploring mental arithmetic tricks in T. Martin's 1842 guide, 'Pounds, shillings and pence'
Pandigital square numbers
Why are there none in base 13?