Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Staunton-Cochrane_Variation
Moves: 1. e4 c5 2. c4 Nc6 3. d3 g6 4. Be3 Qb6 5. Qb3 Bg7 6. Nc3 Nb4 7. Na4 Qa5 8. Bd2
b5 9. Nxc5 bxc4 10. Qxc4 Rb8 11. a3 Ba6 12. Nxa6 Qxa6 13. axb4 *
Position (FEN): 1r2k1nr/p2pppbp/q5p1/8/1PQ1P3/3P4/1P1B1PPP/R3KBNR b KQk - 0 13
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 895
Best move: Qxa1+