Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Traditional_Variation
Moves: 1. Nf3 d5 2. d4 e6 3. c4 Nf6 4. Bg5 Be7 5. Nc3 c6 6. e3 O-O 7. Bd3 dxc4 8. Bxc4
Nbd7 9. Bd3 h6 10. Bf4 Nb6 11. a3 Nbd5 12. Nxd5 Nxd5 13. Bg3 Bd6 14. Bxd6 Qxd6
15. b4 a5 16. O-O axb4 17. e4 Nf4 18. e5 Qe7 19. Qd2 bxa3 *
Position (FEN): r1b2rk1/1p2qpp1/2p1p2p/4P3/3P1n2/p2B1N2/3Q1PPP/R4RK1 w - - 0 20
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1076
Best move: Qxf4