Correct answer: b71...R:a7 2.e8Q#/e8R#/f8Q#/f8R# 1...Rb8 2.a:b8Q#/a:b8R# 1...Rd8+ 2.e:d8Q#/e:d8R# 1...Re8 2.f:e8Q#/f:e8R# 1...Rf8 2.e:f8<
