Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Marshall_Defense
Moves: 1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. e4 Nf6 5. Nc3 e6 6. e5 Nd5 7. Nxd5 Qxd5 8.
Nf3 c5 9. Be2 Nc6 10. Be3 cxd4 11. Nxd4 Bc5 12. Nxc6 Qxd1+ 13. Rxd1 Bxe3 *
Position (FEN): r1b1k2r/pp3ppp/2N1p3/4P3/8/4b3/PP2BPPP/3RK2R w Kkq - 0 14
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 521
Best move: Rd8#