The solution to last Monday’s problem is that White wins most cleanly with 1. Nc2!. The idea is that Rxa2 is met by 2. Qd8+ Qxd8 3. Rxd8+ Kg7 4. Na3
In this week’s problem, White has to find the cleanest method of establishing a won game.
At present, he has two pieces for a Rook, but his Knight is pinned and the Black Rook is active on the seventh rank.
How should White consolidate?