Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Other_variations
Moves: 1. d4 e6 2. c4 d5 3. Bf4 Bd6 4. Bg3 Bxg3 5. fxg3 Nf6 6. Nf3 dxc4 7. e3 Qd5 8.
Nc3 Qa5 9. Bxc4 Nc6 10. Bb5 a6 11. Bxc6+ bxc6 12. Ne5 Bb7 13. Qb3 Rb8 14. Nxc6
Bxc6 15. Qxb8+ Kd7 16. Qxh8 Qb4 17. O-O Qxb2 18. Qxg7 *
Position (FEN): 8/2pk1pQp/p1b1pn2/8/3P4/2N1P1P1/Pq4PP/R4RK1 b - - 0 18
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 840
Best move: Qxg2#