Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Old_Sicilian
Moves: 1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. d3 d5 5. Bb3 d4 6. c3 dxc3 7. bxc3 b6 8. d4
Ba6 9. c4 cxd4 10. O-O Na5 *
Position (FEN): r2qkbnr/p4ppp/bp2p3/n7/2PpP3/1B3N2/P4PPP/RNBQ1RK1 w kq - 2 11
White to move.
Themes:  Opening  
Puzzle rating: 1040
Best move: Ba4+