Step 1 of 2
Black to move · Hold the draw
The bishop is dark and is light. Get your king into the corner.
The bishop is dark and is light. Get your king into the corner.
A bishop and a rook pawn can't win if the bishop runs on the other colour from the pawn's queening square. Get your king into the corner in front of the pawn. The bishop can never check it out of there, and the king and pawn alone can't drive it out either, so it's a draw however far White's king comes.
Every move is checked with an endgame tablebase, which knows the exact result of every position with up to seven pieces. The computer defends perfectly, and if a move throws the result away, the trainer stops and shows you a better one.