Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Dragon_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 g6 6. Be3 Bg7 7. Qd2 Nf6 8. f3
O-O 9. O-O-O Be6 10. g4 a6 11. g5 Nd7 12. h4 Qa5 13. Nxe6 fxe6 14. f4 Rac8 15.
h5 *
Position (FEN): 2r2rk1/1p1np1bp/p1npp1p1/q5PP/4PP2/2N1B3/PPPQ4/2KR1B1R b - - 0 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1286
Best move: Nb4