Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Marshall_Counterattack
Moves: 1. e4 c5 2. Nf3 e6 3. d4 d5 4. dxc5 Bxc5 5. exd5 exd5 6. Bb5+ Nc6 7. O-O a6 8.
Re1+ Ne7 9. Ba4 O-O 10. Nc3 Bg4 11. h3 Bh5 12. Be3 *
Position (FEN): r2q1rk1/1p2nppp/p1n5/2bp3b/B7/2N1BN1P/PPP2PP1/R2QR1K1 b - - 2 12
Black to move.
Themes:  Opening  
Puzzle rating: 1667
Best move: d4