The wrong bishop is lesson 1 of 6 in Endgame 6: Bishops and knights, an endgame course suited to players rated around 1600 (club players). Bishop and rook's pawn cannot win if the bishop does not control the queening corner and the defending king gets there. It has 6 interactive exercises: 6 calculated lines from real positions. You play every move on a board and get feedback straight away. The lesson is free.
What you practise
Black to move: hold the draw. (3 positions)
White to move: hold the draw. (3 positions)
Worked examples
Black to move: hold the draw. 1...Kb6 2.Ba5+ Kxa6. The bishop does not control the queening square, so the king in the corner holds. This is a draw (checked with endgame tables). After Kxb4 the position would be lost.
White to move: hold the draw. 1.Kf3 Kd7 2.Kf2 Ke6 3.Kg1. The bishop does not control the queening square, so the king in the corner holds. This is a draw (checked with endgame tables). After Ke4 the position would be lost.
chessGM