Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Accelerated_Dragon
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Bc4 Bg7 6. Be3 e6 7. Nc3 a6 8. Qd2
Nge7 9. O-O-O O-O 10. f4 b5 11. Bb3 Bb7 12. f5 e5 13. Nf3 gxf5 14. exf5 Nxf5
15. Bg5 Qb6 *
Position (FEN): r4rk1/1b1p1pbp/pqn5/1p2pnB1/8/1BN2N2/PPPQ2PP/2KR3R w - - 2 16
White to move.
Themes:  Middlegame  
Puzzle rating: 1070
Best move: Nd5