Chess Puzzle of the Week (75)

The distinguished English mathematician Richard Guy died on 9 March at the impressive age of 103.

He was a strong chess player in his youth and, in the 1940s and 1950s, was a prominent composer of endgame studies.

Most of my chess pupils know my three favourite things: ice cream, chocolate and pawn endings.

As you may well have nothing better to do than sit at home solving studies here are two for the price of one, both composed by Richard Guy and published in The Chess Problem in 1944.

puzzle75

White to play and draw. You have a 50-50 chance of finding the correct first move.

puzzle75a

White to play and win. The first move is pretty obvious, but what happens then?