Correct answer: Rb31.Na5+?? 1...Kb4 2.Rb3# but 1...b:a5! 1.Kc2?? (2.R3d4#/Ra5#/Re5#/Rf5#/Rg5#/Rh5#) 1...b5 2.R3d4#/Re5#/Rf5#/Rg5#/R<