Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Sozin
Moves: 1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. Nc3 Nc6 5. d4 cxd4 6. Nxd4 Rb8 7. Nf3 a6 8.
O-O Bg4 9. Bf4 e6 10. Be2 e5 11. Be3 Be6 12. Ba7 *
Position (FEN): 1r1qkb1r/Bp3ppp/p1npbn2/4p3/4P3/2N2N2/PPP1BPPP/R2Q1RK1 b k - 3 12
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1147
Best move: Nxa7