Endgamepuzzle - Series 55

White to move

GM_Knockout said ;

1. cxb4!! Rb8+
2. Rb7! Rxb7+
3. Kxb7 e5
4. dxe5+ Kxe5
5. b5 d4
6. bxa6 d3
7. a7 d2
8. a8=Q d1=Q
9. Qe8+ Kf4
10. Qc6 Qb1+
11. Ka8 Qf5
12. a6 Qf8+
13. Kb7 Qb4+
14. Qb6 Qe4+
15. Ka7 Qh7+
16. Ka8 Qe4+
17. Qb7 Qd4
18. a7 Ke3 
19. Qc6 Qh8+
20. Kb7 Qg7+
21. Kb6 Qb2+
22. Qb5 Qf6+
23. Qc6 Qb2+
24. Ka6 Qa1+
25. Kb7 Qg7+
26. Qc7 Qg2+
27. Ka6 Qa2+
28. Qa5 Qe2+
29. Kb6 Qb2+
30. Qb5 Qf6+
31. Qc6 Qb2+
32. Ka6 Qa1+
33. Kb7 Qg7+
34. Qc7 Qb2+
35. Ka8 Qh8+
36. Kb7 Qh1+

- Game drawn with agreement 1/2 - 1/2