Chess puzzle (Advantage)
Moves: 1. e4 c5 2. Nc3 Nc6 3. Nf3 d6 4. Bc4 e6 5. d3 Nf6 6. h3 a6 7. O-O Na5 8. Bb3
Nxb3 9. axb3 Be7 10. Ne2 Bd7 11. c3 O-O 12. e5 dxe5 13. Nxe5 Bc8 14. Re1 Bd6
15. Bf4 Qc7 16. Ng3 Nd7 17. Nxd7 Bxd7 18. Bxd6 Qxd6 19. Ne4 Qd5 20. Qg4 *
Position (FEN): r4rk1/1p1b1ppp/p3p3/2pq4/4N1Q1/1PPP3P/1P3PP1/R3R1K1 b - - 3 20
Black to move.
Themes:  Middlegame  
Puzzle rating: 1392
Best move: f5