More from Chalkdust
Significant figures: David Singmaster (1938–2023)
Colin Wright remembers the puzzle giant with a passion for sharing
Heads and Tails
An unexpected way to beat the odds in this classic game
Domino tiling & domineering
John Dore and Chris Woodcock join the dots
Taking the (mathematically) perfect picture at the Leaning Tower Of Pisa
Finding the best picture at the Leaning Tower of Pisa is all about the maths rather than the pose!
Review: Mathematical socks
Can you wear them and be taken mathematically seriously?
Do you have too many or too few friends?
Do we have a natural limitation on the number of friends that we have?