Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Najdorf_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O
O-O 9. Kh1 Nbd7 10. Be3 b5 11. f3 Bb7 12. Qe1 Nb6 13. g4 b4 14. Nd1 d5 15. Nc5
dxe4 *
Position (FEN): r2q1rk1/1b2bppp/pn3n2/2N1p3/1p2p1P1/4BP2/PPP1B2P/R2NQR1K w - - 0 16
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1135
Best move: Nxb7