Chess puzzle (Advantage)
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Bb4 6. Bd2 Nf6 7. Bd3 Qa5 8. a3
Bxc3 9. Bxc3 Qc7 10. O-O Nc6 11. Nxc6 bxc6 12. Bb4 d5 13. Re1 c5 14. e5 cxb4
15. exf6 g6 16. axb4 Bb7 17. c4 dxc4 18. Rc1 Qf4 19. Rxc4 Qxf6 20. Qa4+ Kf8 21.
Rc7 Bd5 22. Bxa6 Kg7 23. Qb5 Qg5 24. f3 Qd2 25. Kf1 Qxb2 26. Bb7 Ra1 27. Rxa1 *
Position (FEN): 7r/1BR2pkp/4p1p1/1Q1b4/1P6/5P2/1q4PP/R4K2 b - - 0 27
Black to move.
Themes:  Middlegame  
Puzzle rating: 781
Best move: Qxa1+