!! Be careful, hachure is a concept which is rather aimed at the fans of complexity and technical reflection !!

Does anyone have a tissue for this one?
May contain traces of trees.

Difficulty : *****

Tested, logical.
Bound-condition is verified.
Bound-logic can help. It can be useful to clog up some rows where segments can start or end.
You'll have to be very focused. Especially around the 3 in C7.
Good blackenage.