Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Nyezhmetdinov-Rossolimo_Attack
Moves: 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. Nc3 Bg7 6. d3 Nf6 7. Bg5 h6 8.
Bh4 g5 9. Bg3 Nh5 10. Qd2 Nxg3 11. hxg3 Ba6 12. O-O-O c4 13. d4 Rb8 14. Kb1 Qb6
15. Na4 *
Position (FEN): 1r2k2r/p2pppb1/bqp4p/6p1/N1pPP3/5NP1/PPPQ1PP1/1K1R3R b k - 4 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1812
Best move: Qb5