Correct answer: Rg11.Bg2-e4 ? (A) but 1...Kg8*f7 ! (a) 1.Bg2-d5 ? (B) but 1...Kg8-h7 ! (b) 1.Rg1! zz 1...K:f7(a) 2.Bd5# (B) 1...Kh7 (b) 2