Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Other_variations
Moves: 1. e4 c5 2. Qf3 e6 3. Nc3 Nc6 4. Bb5 Nf6 5. Bxc6 bxc6 6. e5 Nd5 7. Nxd5 cxd5 8.
d3 Be7 9. Bf4 O-O 10. Ne2 f6 11. exf6 Bxf6 12. O-O-O Bb7 13. d4 Qa5 14. a3 Qb6
15. Qb3 Qc6 16. dxc5 Ba6 17. Rhe1 e5 18. Bg3 *
Position (FEN): r4rk1/p2p2pp/b1q2b2/2Ppp3/8/PQ4B1/1PP1NPPP/2KRR3 b - - 1 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1962
Best move: Bc4