Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Hyperaccelerated_Fianchetto
Moves: 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Be3 Nc6 6. Nc3 Nf6 7. f3 O-O 8.
Qd2 d5 9. Nxc6 bxc6 10. e5 Nd7 11. f4 e6 12. O-O-O c5 13. Bf2 Rb8 14. h4 Qb6
15. b3 Qb4 16. Na4 *
Position (FEN): 1rb2rk1/p2n1pbp/4p1p1/2ppP3/Nq3P1P/1P6/P1PQ1BP1/2KR1B1R b - - 2 16
Black to move.
Themes:  Middlegame  
Puzzle rating: 1126
Best move: Qa3+