Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Delayed_Alapin_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. c3 Qc7 4. d4 cxd4 5. cxd4 a6 6. Nc3 Bb4 7. Bd2 Nf6 8. Rc1
Nc6 9. d5 exd5 10. exd5 Ne5 11. Nb5 *
Position (FEN): r1b1k2r/1pqp1ppp/p4n2/1N1Pn3/1b6/5N2/PP1B1PPP/2RQKB1R b Kkq - 2 11
Black to move.
Themes:  Opening  
Puzzle rating: 1930
Best move: Nxf3+