Chess puzzle (Advantage)
Moves: 1. Nf3 e6 2. d3 Nf6 3. Bg5 Be7 4. Qd2 h6 5. Bh4 b6 6. g3 Bb7 7. Bg2 d5 8. Ne5
Nbd7 9. f4 Nxe5 10. fxe5 Nd7 11. Bxe7 Qxe7 12. d4 c5 13. c3 cxd4 14. cxd4 O-O
15. Nc3 f6 16. e4 dxe4 17. Bxe4 Bxe4 18. Nxe4 fxe5 19. d5 exd5 20. Qxd5+ Kh8
21. O-O-O Rac8+ 22. Kb1 Nf6 23. Qd6 Qe8 24. Nc3 e4 25. Rhe1 e3 26. Qd4 b5 27.
Qxe3 Qc6 28. Qxa7 *
Position (FEN): 2r2r1k/Q5p1/2q2n1p/1p6/8/2N3P1/PP5P/1K1RR3 b - - 0 28
Black to move.
Themes:  Middlegame  
Puzzle rating: 1739
Best move: b4