Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Modern_Variations
Moves: 1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. d3 Nc6 5. Nc3 Na5 6. Bb5+ Nc6 7. d4 a6 8. Bc4
b5 9. Nxb5 *
Position (FEN): r1bqkb1r/4pppp/p1np1n2/1Np5/2BPP3/5N2/PPP2PPP/R1BQK2R b KQkq - 0 9
Black to move.
Themes:  Opening  
Puzzle rating: 1005
Best move: axb5