Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Other_variations
Moves: 1. e4 c5 2. d3 e6 3. Nc3 a6 4. Nf3 d6 5. Bf4 Nf6 6. e5 dxe5 7. Bxe5 Nc6 8. d4
Qb6 9. Na4 Qb4+ 10. Nc3 Nd5 11. a3 Qxb2 12. Nxd5 *
Position (FEN): r1b1kb1r/1p3ppp/p1n1p3/2pNB3/3P4/P4N2/1qP2PPP/R2QKB1R b KQkq - 0 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1433
Best move: exd5