Restless Knights

Discovered at Home-Mate (©SRT), which will most likely happen rather early in the game, with the mated king never having moved. Bishop moves away, and a major piece (usually a rook but can be a queen) gives a discovered check to a king that's still on its initial square. The bishop also gives a check, making it a double check (a very powerful weapon, because the opponent then has to move the king, if it can't move it's checkmate, like in this case). The unlucky king is partly blocked by his own pieces, who take away his escape squares. A similar mate exists, where we have a knight instead of a bishop. That one is called Discovered by Knight-Mate (name also given by SRT).