https://www.dropbox.com/s/ngwc5rdvgibuyfe/85_W_191204.jpg?dl=0
Daddy Of All Gattai, all Windoku's this time.
Ruud's challenge about the biggest kind of Gattai in 2007: 85 overlapping Sukoku's, that inspired me some years ago to solve these kind of puzzles, by hand.
I never could solve however his 85-Gattai with vanilla Sudoku's https://sites.google.com/site/sisesuso/gattai.
This is a similar 85-Gattai: All Windoku's and it should be easy because there is a way of working to use Singles Only (no special methods needed).
So the SE rating is 1.5 at most. But that is a very very very subjective rating.
4747 cells to solve and it is symmetrical up/down and left/right. That should things make a bit easier. But it is not.
Do not start in the NorthWest but rather in the South.
Have a nice Xmax holiday 2019....
And for Solver friends:
https://sites.google.com/site/sisesuso/examples/85-gattai-doag
Edit: url's with images redirected to dropbox