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. Nf3 Be7 8. O-O
h6 9. h3 O-O 10. Nh2 b5 11. Nd5 Nxe4 *
Position (FEN): rnbq1rk1/4bpp1/p2p3p/1p1Np3/4n3/7P/PPP1BPPN/R1BQ1RK1 w - - 0 12
White to move.
Themes:  Opening  
Puzzle rating: 1950
Best move: Bf3