Oo, OK...
Apparently this render with Maya closed does work:
Here's what it did overnight:


I just noticed that the white king is on the wrong spot...
(I had this kind of problem in all of the renders so far...)
I tried to fix it by re-rendering that region but it left seams for some reason.

C&C please, before I re-render the whole thing this night
(not just because of the king. Other small issues as well...)
Benny