CHESS Puzzles, Problems with solutions - mate in 3 by Bishop & Knight

CHESS PUZZLE:

White to move and mate in 3 moves.

This chess puzzle is an endgame problem of mating the opponent King using only the Bishop and Knight with the help of the friendly King.

SOLUTION:

1. Ba6.

1... Ka8.

2. Bb7+.

2... Kb8.

3. Nc6 mate.