CHESS SOLUTION:

1 Bxf6 !! draws

A: 1...Kxf6 ? ; 2 Qg6 # B: 1...Qxf6 ? ; 2 Qg8 # C: 1...Qb8 ? ; 2 Qg6 + , Kf8; 3 Qg8 #

D: 1...ef (the game continuation) 2 Qd7 + , Kf8; 3 Qd8 + , and the game was agreed drawn through perpetual check