Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Old_Sicilian
Moves: 1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. Bc4 Bg7 5. d3 e5 6. Bg5 Qb6 7. Qd2 Qxb2 8. Bb3
Qxa1+ 9. Nd1 Nd4 10. O-O Nxf3+ 11. gxf3 Qd4 12. Nc3 a6 *
Position (FEN): r1b1k1nr/1p1p1pbp/p5p1/2p1p1B1/3qP3/1BNP1P2/P1PQ1P1P/5RK1 w kq - 0 13
White to move.
Themes: Defensive Move Middlegame  
Puzzle rating: 1394
Best move: Nd5