Chess puzzle (Checkmate)
Opening: Slav_Defense, Slav_Defense_Other_variations
Moves: 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. b3 Bb4 6. Bb2 Qa5 7. Qc2 Ne4 8. Ne2
O-O 9. a3 Bxc3+ 10. Nxc3 Nd7 11. b4 Qd8 12. cxd5 Nxc3 13. dxc6 Nd5 14. cxd7
Bxd7 15. Bd3 Rc8 16. Qd2 Qg5 17. O-O Bc6 18. b5 Nxe3 19. bxc6 *
Position (FEN): 2r2rk1/pp3ppp/2P1p3/6q1/3P4/P2Bn3/1B1Q1PPP/R4RK1 b - - 0 19
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 809
Best move: Qxg2#