Done! 8 days ago, I made then other attempts, all DNF. In any case, it helps me as as training for the 4x4 BLD, since the centers are all to be resolved
For parity, I solve the central edges with M2, when I have the parity for the edges, I use an algorithm that Stefan gave me and hence solve the parity of the corners
Thanks a lot for your help Sakarie !!!
probably I never get to solve in WCA Competition, is very difficult
I'll try at Barcellona next week
With 4x4 instead I made progress, about 4 minutes of memo, I think I'll have to learn r2 edges...after the summer, maybe...I don't know