Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_OKelly_Variation
Moves: 1. e4 c5 2. c4 d6 3. Nf3 a6 4. Be2 Nf6 5. h3 Nxe4 6. d3 Nf6 7. O-O Nc6 8. Nc3
g6 9. Nd5 e6 10. Nxf6+ Qxf6 11. Rb1 Bg7 *
Position (FEN): r1b1k2r/1p3pbp/p1nppqp1/2p5/2P5/3P1N1P/PP2BPP1/1RBQ1RK1 w kq - 2 12
White to move.
Themes:  Opening  
Puzzle rating: 1153
Best move: Bg5