Correct answer: Qb61...N:c2+ 2.R:c2# 1...Nd3+ 2.c:d3# 1...Nd5/Na2/Na6 2.O-O# 1.Qb5?? zz 1...N:c2+ 2.R:c2# 1...Nd3+ 2.c:d3# 1...Nd5/Na2/N