Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Marshall_Counterattack
Moves: 1. e4 e6 2. Nf3 d5 3. d4 c5 4. Be3 dxe4 5. Ne5 Qa5+ 6. Qd2 Qc7 7. Bb5+ Nc6 8.
dxc5 a6 9. Bxc6+ bxc6 10. Bf4 Qb7 11. Qc3 Nf6 12. h4 *
Position (FEN): r1b1kb1r/1q3ppp/p1p1pn2/2P1N3/4pB1P/2Q5/PPP2PP1/RN2K2R b KQkq - 0 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1321
Best move: Nd5