Chess puzzle (Advantage)
Moves: 1. d4 d5 2. Nf3 Nf6 3. Bf4 Nc6 4. e3 e6 5. Bd3 Bd6 6. Ne5 Bd7 7. c3 Qe7 8. Nd2
O-O-O 9. Nxd7 Nxd7 10. Bxd6 Qxd6 11. a4 e5 12. a5 a6 13. O-O e4 14. Be2 Nf6 15.
b4 h5 16. b5 axb5 17. a6 Ng4 18. Bxg4+ hxg4 19. Qxg4+ Kb8 20. g3 Qh6 21. Rfb1
Qxh2+ 22. Kf1 Na7 23. axb7 Kxb7 24. Ke2 Qh6 25. Nb3 Qf6 26. Nc5+ Kb8 27. Rxa7
Kxa7 28. Rxb5 Rh2 29. Ra5+ Kb6 *
Position (FEN): 3r4/2p2pp1/1k3q2/R1Np4/3Pp1Q1/2P1P1P1/4KP1r/8 w - - 3 30
White to move.
Themes:  Endgame  
Puzzle rating: 1111
Best move: Ra6+