Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Richter-Rauzer_Variation
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Nxc6 bxc6 8.
Be2 h6 9. Bh4 Be7 10. O-O Qc7 11. Bg3 Bb7 12. Bc4 Rd8 13. Qe2 Qb6 14. Na4 Qb4
15. b3 d5 16. exd5 cxd5 *
Position (FEN): 3rk2r/pb2bpp1/4pn1p/3p4/NqB5/1P4B1/P1P1QPPP/R4RK1 w k - 0 17
White to move.
Themes:  Middlegame  
Puzzle rating: 2366
Best move: a3