Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_French_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qc7 5. Nc3 a6 6. Bd3 Nc6 7. Be3 Nf6 8.
Na4 e5 9. Nxc6 dxc6 10. Bb6 Qd6 11. Bc5 Qd8 12. Bb6 Qd7 13. Be3 Be7 *
Position (FEN): r1b1k2r/1p1qbppp/p1p2n2/4p3/N3P3/3BB3/PPP2PPP/R2QK2R w KQkq - 8 14
White to move.
Themes:  Opening  
Puzzle rating: 1222
Best move: Nb6