Correct answer: R:c71...b4 2.R:b4# 1...f:e3 2.Q:c7# 1.R:f4?? zz 1...b4 2.R:b4# 1...c5 2.Ra4# but 1...c6! 1.Qf3?? (2.Qb7#/Qa8#) 1...c5 2.Qb7# but 1...c6!
