Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Other_variations
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. Bg5 Nbd7 6. e3 Bb4 7. Be2 Qa5 8. Qc2
Ne4 9. Rc1 Nxg5 10. Nxg5 dxc4 11. Ne4 b5 12. a3 Be7 13. O-O Bb7 14. f4 a6 15.
f5 e5 16. dxe5 Nxe5 17. f6 gxf6 18. Nxf6+ Bxf6 19. Rxf6 O-O-O *
Position (FEN): 2kr3r/1b3p1p/p1p2R2/qp2n3/2p5/P1N1P3/1PQ1B1PP/2R3K1 w - - 1 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1167
Best move: Qf5+