Chess puzzle (Checkmate)
Opening: Catalan_Opening, Catalan_Opening_Open_Defense
Moves: 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Nc6 6. O-O Bd6 7. Qc2 b5 8. Nc3
b4 9. Nb5 a6 10. Nxd6+ Qxd6 11. Ne5 Nxd4 12. Qxc4 Rb8 13. Bf4 Qb6 14. Rfd1 c5
15. Nc6 Nxc6 16. Bxc6+ Qxc6 17. Bxb8 Bb7 18. Bd6 *
Position (FEN): 4k2r/1b3ppp/p1qBpn2/2p5/1pQ5/6P1/PP2PP1P/R2R2K1 b k - 2 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 597
Best move: Qh1#