Correct answer: O-O-O1...B:b4+ 2.a:b4# 1...Rc8/Rd8/Re8/Rf8/Rg8/Rh8 2.Q:b7# 1...b:c5 2.Q:a5# 1.Rb1?? zz 1...Rc8/Rd8/Re8/Rf8/Rg8/R