Chess puzzle (Checkmate)
Opening: Slav_Defense, Slav_Defense_Three_Knights_Variation
Moves: 1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. Nf3 Nbd7 5. Bg5 Qa5 6. cxd5 cxd5 7. Qb3 e6 8.
e3 Bb4 9. Bd3 h6 10. Bh4 Ne4 11. Bxe4 dxe4 12. Nd2 Bxc3 13. bxc3 Qd5 14. c4 Qf5
15. Qb4 a5 *
Position (FEN): r1b1k2r/1p1n1pp1/4p2p/p4q2/1QPPp2B/4P3/P2N1PPP/R3K2R w KQkq - 0 16
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1177
Best move: Qe7#