Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Delayed_Alapin
Moves: 1. e4 c5 2. c3 d6 3. Nf3 Nc6 4. d4 cxd4 5. cxd4 e6 6. Nc3 Nf6 7. Bb5 a6 8.
Bxc6+ bxc6 9. d5 cxd5 10. exd5 exd5 11. Nxd5 Nxd5 12. Qxd5 Bd7 13. O-O Be7 14.
Re1 O-O 15. Bf4 Be6 16. Qh5 Rb8 17. b3 *
Position (FEN): 1r1q1rk1/4bppp/p2pb3/7Q/5B2/1P3N2/P4PPP/R3R1K1 b - - 0 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 2040
Best move: Rb5