Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Other_variations
Moves: 1. e4 c5 2. e5 e6 3. g3 Nc6 4. Qe2 Qc7 5. Nf3 Nge7 6. Nc3 Nb4 7. d3 Ng6 8. Nb5
Qb6 9. d4 a6 10. dxc5 *
Position (FEN): r1b1kb1r/1p1p1ppp/pq2p1n1/1NP1P3/1n6/5NP1/PPP1QP1P/R1B1KB1R b KQkq - 0 10
Black to move.
Themes:  Opening  
Puzzle rating: 1949
Best move: Qxb5