Chess puzzle (Advantage)
Opening: Horwitz_Defense, Horwitz_Defense_Other_variations
Moves: 1. d4 e6 2. Bf4 d5 3. e3 c5 4. Nf3 Nc6 5. c4 Qa5+ 6. Nc3 cxd4 7. Nxd4 Bb4 8.
Nxc6 bxc6 9. Qd4 Nf6 10. Bd3 Ne4 11. O-O Nxc3 12. a3 dxc4 13. axb4 cxd3 14.
Qxc3 Qd8 15. Rfd1 O-O 16. Rxd3 Bd7 17. Rad1 a5 18. Rxd7 axb4 19. Qxb4 *
Position (FEN): r2q1rk1/3R1ppp/2p1p3/8/1Q3B2/4P3/1P3PPP/3R2K1 b - - 0 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1497
Best move: Qxd7