Checkmating with the Bishop Pair!!
Have you ever tried checkmating with a pair of bishops? Can it be done only if your opponent makes mistakes? Can it be forced?
The answer is that it can be forced, but you need your king to assist. I have never been taught how to checkmate with bishops, I have never even read a book or article on it, even to this day, but I discovered this technique with just a chessboard and pieces, going over variations, wondering if it was even possible, then discovered a concrete solution.
For sheer simplicity, to help get the processes behind the technique across, I will show you as white, how to checkmate the black king in the top-left corner of the board on a8 (h1), with only the relevant material on the board, and the pieces on their normal starting squares - you can checkmate in any of the 4 corners, but I believe checkmating in the top-left is easier, maybe because that's how I discovered how to do it...
I am not sure if this is textbook stuff, but I have applied this technique in 2 games so far with 100% success rate!
White wants to co-ordinate his army, force the black king to the 8th rank, then into the top-left corner and checkmate him! The black king will want to stay as central as possible, because checkmate can only occur in a corner. The following example will show what both sides are trying to achieve. Even if the person who has the black king is a 2700+ super-GM and the person with the white pieces is a 1500 checkmate can be forced, no problem!