Chess puzzle (Checkmate)
Opening: Nimzo-Larsen_Attack, Nimzo-Larsen_Attack_Classical_Variation
Moves: 1. Nf3 d5 2. b3 Bg4 3. Bb2 e6 4. e3 Nf6 5. Be2 Bd6 6. d4 O-O 7. Nbd2 Re8 8. O-O
Nbd7 9. h3 Bh5 10. a4 e5 11. dxe5 Nxe5 12. Rc1 Nxf3+ 13. Nxf3 Bxf3 14. Bxf3 c6
15. Qd3 a6 16. Be2 Bc7 17. Qf5 Qd6 18. Bd3 *
Position (FEN): r3r1k1/1pb2ppp/p1pq1n2/3p1Q2/P7/1P1BP2P/1BP2PP1/2R2RK1 b - - 5 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 504
Best move: Qh2#