
Solution

1… Bxd4 2. Rxd4 Re1+ followed by Qxc1
The point of 1… Bxd4 is to clear the way for the black rook to threaten the discovered attack, Re1+ followed by Qxc8
1… Bxd4 2. Rxd4 Re1+ followed by Qxc1
The point of 1… Bxd4 is to clear the way for the black rook to threaten the discovered attack, Re1+ followed by Qxc8