1.Qg5-f5!? threat: 2.Qf5-e4+ Kd5-c4 3.Sd4~ # <div>1...e6*f5 2.Be8*f7+ Sf4-e6 3.Bf7*e6 # but 1...f3-f2! </div><div>1.Sd4-c2? threat: 2.Rh4*f4 threat: 3.Rf4-d4 # but 1...f3-f2! </div><div> 1.Sd4*e6! threat: 2.Se6*f4+ Kd5-c4 3.d2-d3#!  </div><div>1...Sf4*e6 2.Be8*f7 threat: 3.Rh4-d4# 1...f7*e6 2.Rh4*f4 threat: 3.Rf4-d4# </div><div>1...Kd5*e6 2.e3-e4 threat: 3.Qg5-f5# </div><div>1...Kd5-c4 2.Qg5*e5 f3-f2 3.Qe5-d4# </div><div><br /></div><div> Defences on same square e6, Pinning, Active sacrifice</div><br />