User:Qwertyxp2000/Two bishops checkmate

The two bishops checkmate in chess is the checkmate of a lone king by the opponent's two bishops and king. The superior side is able to the lone king into a corner and  using the two bishops and king collaboratively. The only stipulation is that the two bishops must move on opposite-colored squares. Accomplishing the mate requires a maximum of 18 moves.

Three basic checkmate positions are possible:

Method
The king and bishops cooperate to drive the enemy king to an edge of the board, and then into a corner to deliver the mate. "The process, though a bit lengthy, is fascinating because it gives us a glimpse of the power of the two bishops on the open board."
 * 1. Bd1 Ke3 2. Kb2 Kd2 3. Bc2 Ke3 4. Kc3 Kf3
 * Or


 * 5. Kd4 Kg4 6. Be1 Kf3 7. Bd3 Kf4 8. Be4 Kg5 9. Ke5 Kg4 10. Bf2 Kg5
 * Or 10...Kh3 11.Kf4 Kh2 12.Kf3 Kh3 13.Bd3 Kh2 14.Bf1 Kh1 15.Be3 Kh2 16.Kf2 Kh1 17.Bg2+ Kh2 18.Bf4#.
 * 11. Bf5 Kh6 12. Kf6 Kh5 13. Be6 Kh6 14. Bg4 Kh7 15. Kf7 Kh6 16. Be3+ Kh7 17. Bf5+ Kh8 18. Bd4