Solution
1. Qh8+ Kg5 2.Qh6+ Kf5 3.Qxc1
1.Qh8+ forces the black king to move onto the same diagonal as the black queen. White can then use a skewer to win the black queen on c1.
1. Qh8+ Kg5 2.Qh6+ Kf5 3.Qxc1
1.Qh8+ forces the black king to move onto the same diagonal as the black queen. White can then use a skewer to win the black queen on c1.