Correct answer: Ng41...R:b4/Rb6/Rb7/Rb8/Rd5 2.Qd5# 1...N:b1 2.Qc2#/Q:b1# 1...Nc2/Nc4 2.Q:c2# 1...Bd2/Be1/Bd4/B:b4 2.Rd4#