Puzzle solved?

SIR – Angela Lanyon (Letters, August 11) tells of a WH Smith’s self-service till refusing to allow a young woman to buy a jigsaw without authorisation.

But was the woman trying to buy a jigsaw or a jigsaw puzzle? A jigsaw is a fairly dangerous power tool (although I doubt whether WH Smith sell them).

Cobham, Surrey

SIR – The jigsaw puzzle might have been unsuitable for children under 36 months due to small parts. Perhaps the till was set with an alert to check that the item wasn’t being purchased by an unaccompanied two-year-old child.

Wilmslow, Cheshire

SIR – A jigsaw has a wealth of dangers.

Apart from small parts to choke on and a plastic bag to suffocate within, it is possible that the image on the box could represent something deeply unsettling to the modern audience – a photo of somewhere in the United Kingdom looking pastoral and pleasant, for example.

Haywards Heath, West Sussex