The solution to last Monday’s problem is that White plays 1. Qf4!. This wins after 1…Kh8 2. Qh6 Rg8 3.Rf3 Qf8 4. Qxh7+! and mates.
King and Pawn endings are good at showing the perils of lazy analysis. Lazy analysis costs points.
If White lazily plays 1. b7 in the diagram position, he will only draw. How does Black save the game after 1.b7 and what should White play instead to ensure he wins the game?