In this week’s problem, White can stalemate his opponent by playing 1. Bxb2
But White wants to win.
To win, White has to work out an answer to Black’s two threats of 1.. PxB=Q and 1… b1 = Q.
White has to reason logically and work out the best square for his Rook to be on to answer those two moves.
How does White win?
The solution to last week’s problem is that White wins with 1. g6 Rxc7 2. Rxh7+ Rxh7 3. h6! and he will promote a pawn.