Solution
1… Rxd4 wins the rook since 2. exd4 clears the e-file for the black queen and allows 2… Qe1+ 3. Qxe1 Rxe1#
The "7-Skills" Chess Training Model. Get your free copy here...
1… Rxd4 wins the rook since 2. exd4 clears the e-file for the black queen and allows 2… Qe1+ 3. Qxe1 Rxe1#