Correct answer: Nh51...f6 2.Qe6# 1...c4 2.Qf5# 1...Nc8/Na8 2.c4# 1...Qd6/Q:d8 2.Qe4# 1.Ne8?? (2.Nf6#) 1...f5 2.Qg8# 1...Qd6/Q:d8 2.Qe4#
