Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Open
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 e6 6. Be3 Be7 7. Qg4 Bf6 8.
Qd1 Nge7 9. Bb5 O-O 10. O-O a6 11. Bxc6 Nxc6 12. f4 Qc7 13. f5 exf5 *
Position (FEN): r1b2rk1/1pq2ppp/p1np1b2/5p2/3NP3/2N1B3/PPP3PP/R2Q1RK1 w - - 0 14
White to move.
Themes:  Opening  
Puzzle rating: 1865
Best move: Nd5