Papy,
I think that the language barrier is limiting the understanding of what you are trying to convey or ask in almost all of your posts.
I know that you are trying hard, but you have to be patient & persevere if you want to get a good reply.
Have you tried searching for other members of this forum who can understand you better than me.
If Irecall correctly you are French ..... Look for active members with a similar Location as you are.
They might be members of a French speaking sudoku community.
If all of the above are not Plausable then I guess EVERYBODY needs to be patient
tarek