Pass the problem back

Opposition and zugzwang are where chess makes this idea exact. Off the board, it becomes a habit only if you practise it there too, as this week’s task asks.

On the board, kings cannot stand next to each other. When they face each other with one square between, the one that must move has to give way. Here Black is to move. Black's king must step aside, White's king walks forward, and the pawn queens. With White to move instead, it would be a draw. This is the opposition.