I'm one of the happy people

Chess. I have 10 chess-games running. It takes from about 2 weeks to 1 year to finish.
Here is one of them.
What is white's next move?

Holiday travelling and photos.
. . . . .
From Honolulu, HAWAII, October 1999. Charles, Laila, Jon Arild, Sølvi

WHITE . . BLACK
1 5254 . . . 5755
2 4244 . . . 55x44
3 7163 . . . 6824+
4 3233 . . . 44x33
5 22x33 . . 2435
6 6134 . . . 4857
7 5171 . . . 2836
8 3175 . . . 7866
9 6344 . . . 5878
10 44x36 . . 47x36
11 2142 . . . 8786
12 7584 . . . 7775
13 8473 . . . 3874
14 3452 . . . 74x52
15 41x52 . . . 6858
16 6151 . . . 1848

GPS

Herbalife