76-Problem Solution.

Solution: 1. Be7! [2. Qe4#]
1. ... Rxe7 2. Rg5+
2. ... Kf4 3. Qg3#
2. ... Kf6 3. Qg6#
1. ... Rf4 2. Rg5+
2. ... Rf5 3. Qe4#

The three mover usually allows strategic moves and variations.