Solution
1.Nxa6 Rxa6 2.Bxc4+, followed by Bxa6
1.Nxa6 attracts the black rook to the a6 , where it becomes a target to the fork from white’s bishop, Bxc4+.
1.Nxa6 Rxa6 2.Bxc4+, followed by Bxa6
1.Nxa6 attracts the black rook to the a6 , where it becomes a target to the fork from white’s bishop, Bxc4+.