I’ve these days performed a number of “Stiches” puzzle recreation on this web site :
https://www.puzzle-stitches.com/ .
Slowly happening tougher ones, I’m know caught on a “10×10/3÷ Hard Stitches” puzzle (see screenshots under).
I am unable to see what to do to go futher with out doing a blind guess.

Does somebody is aware of how one can remedy it and will clarify to me the methods concerned ? (And if you understand different methods that aren’t helpful on this one, be at liberty to elucidate them anyway.)

You can discover the principles on the left on the location I linked.

Thanks prematurely,

Here is the clean puzzle (Puzzle ID: 3,432,163) :

Here is the state I’m caught at :