Chess puzzle (Advantage)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. O-O d6 6. h3 a6 7. a4 h6 8. d3 Be6
9. Bxe6 fxe6 10. Nh4 Kd7 11. Be3 Nh7 12. Bxc5 dxc5 13. Ng6 Rg8 14. Qh5 Qf6 15.
f4 exf4 16. Rxf4 Qd4+ 17. Kh1 Rae8 18. Rf7+ Kc8 19. Raf1 Nf6 20. Qf3 Qb4 21.
Rxf6 *
Position (FEN): 2k1r1r1/1pp3p1/p1n1pRNp/2p5/Pq2P3/2NP1Q1P/1PP3P1/5R1K b - - 0 21
Black to move.
Themes:  Middlegame  
Puzzle rating: 1699
Best move: gxf6