Correct answer: d4+1...Nd4 2.b4# 1...Ne1/Ne3/Na1/Na3 2.d4#/b4# 1...Nb4 2.d4# 1.R:c2?? (2.b4#/d4#) 1...Bb3 2.d4# 1...c3 2.b4# but 1...d5! 1.b4+?? 1...N:b4 2.
