EDIT one
I missed two puzzles. They can be found here
http://pagesperso-orange.fr/gpenet/UX/UX_fichiers/274_273_H.htmNumber 274 has an example of scenario analysis
I continue this sample file with the next two puzzles.
Meantime, 270H has been added to the first two, with a kind of "One shot" outlet.
In this last lot, the most interesting is for me the las step in 271H
http://pagesperso-orange.fr/gpenet/UX/UX_fichiers/272_271_H.htm