Correct answer: Rb31...Nb3 2.Q:b3# 1.Qb5+?? 1...Ka3 2.Q:a5# but 1...R:b5! 1.Rb3! (2.Qc4#) 1...N:b3 2.Q:b3# 1...Bc3 2.N:c3# 1...b5 2.
