This one's called Boden's mate. The pattern you're searching for is one in which the King is hemmed in by its own pieces and the Bishops catch the King in a crossfire. It usually arises after a Queen sac. This one's a little less practical than the prior mates, but it will arise at the board. Solve now. Sac the Queen. Remember the name and the pattern. If you're attempting to improve by doing tactics problems, which is advised, you'll see Boden's mate plenty.