40. 26-21 11-17 41. 21x12 18x07 42. 36-31 07-12 43. 31-26 05-10 44. 26-21 15-20 45. 21-16 12-17 46. 38-33 and white winning a piece or going to king.

50. ... 17-21 51. 37-31 23-28 52. 33x22 24-29 53. 34x23 19x17 =.

@Raimonds, Harm Wiersma also shows dia 1 and why it is very good for white in the daily livestream on Youtube: 
https://youtu.be/ofEJMq9oKMk?t=12279

Thanks for sharing.