Jo, your comment make sense. What bothers me the most is the fact that everything seems right. All elements of the supersolution are found the same way. I got the confirmation that it is (almost) impossible to have missed a remnant, because it is what Max said: just a trick. In my SS I get confirmation about my zone and on the site I got a confirmation about my supersolution. So it is confirmed from both perspectives, and that is what bothers me most. But I will re-check some points and dubble check if I didn’t mess up somewhere/somehow.