Chess puzzle (Advantage)
Moves: 1. h3 h6 2. Nf3 d5 3. d4 Nc6 4. Bf4 a6 5. a3 e6 6. e3 Bd6 7. Bxd6 cxd6 8. Bd3
e5 9. dxe5 dxe5 10. Be2 Be6 11. O-O Qf6 12. c3 Nge7 13. b4 O-O 14. Nbd2 e4 15.
Nd4 Nxd4 16. cxd4 Rac8 17. Nb3 Qg6 18. Bh5 Qg5 19. Kh2 f5 20. Nc5 Rc6 21. Nxb7
Bf7 22. Be2 Rg6 23. Rg1 *
Position (FEN): 5rk1/1N2nbp1/p5rp/3p1pq1/1P1Pp3/P3P2P/4BPPK/R2Q2R1 b - - 4 23
Black to move.
Themes:  Middlegame  
Puzzle rating: 1499
Best move: f4