Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Ragozin_Defense
Moves: 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Bb4 5. Bg5 h6 6. Bxf6 Qxf6 7. e3 O-O 8. Bd3
dxc4 9. Bxc4 Nc6 10. O-O Bxc3 11. bxc3 Na5 12. Bd3 b6 13. Ne5 Rd8 14. Be4 Rb8
15. Qa4 Rd6 *
Position (FEN): 1rb3k1/p1p2pp1/1p1rpq1p/n3N3/Q2PB3/2P1P3/P4PPP/R4RK1 w - - 6 16
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 910
Best move: Qe8#