Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Marshall_Defense
Moves: 1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nf6 5. Nc3 c6 6. Bc4 g6 7. Nf3 b5 8. Bd3
Bg4 9. h3 Bxf3 10. Qxf3 Qxd4 11. O-O Bg7 12. Rd1 Qb6 13. e5 Nfd7 14. Nxb5 Nxe5
15. Qe4 Nxd3 16. Qxd3 Qxb5 *
Position (FEN): rn2k2r/p3ppbp/2p3p1/1q6/8/3Q3P/PP3PP1/R1BR2K1 w kq - 0 17
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1120
Best move: Qd8#