In this week’s problem, White clearly has the better position, as there are weak squares in Black’s camp, and the White pieces are better posted than the Black pieces.
How does White to move find a way of getting control of the c-file? White has several good moves, but the best idea here is to try to activate your worst pieces.
The solution to last Monday’s problem is 1. Qc1. White wants to play Ba3 and exchange the Black Bishop on d6. This leaves the black squares in Black’s position without their natural defender.