Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Alapin_Variation
Moves: 1. e4 c5 2. c3 Nc6 3. d4 Nf6 4. e5 Nd5 5. Bc4 e6 6. Bxd5 exd5 7. Nf3 b6 8. Bf4
d6 9. O-O cxd4 10. cxd4 Be7 11. Nc3 dxe5 12. dxe5 Be6 13. h3 O-O 14. Qa4 Qc8
15. Rad1 Rd8 16. Qb3 *
Position (FEN): r1qr2k1/p3bppp/1pn1b3/3pP3/5B2/1QN2N1P/PP3PP1/3R1RK1 b - - 6 16
Black to move.
Themes:  Middlegame  
Puzzle rating: 1238
Best move: d4