Solved without matching

v skrine prosto eshchyo ne vse kandidati ubrani v

a potom

indeed, thank you
apparently missed yesterday.
But it's not really saves the day. Pairs, triples, quadruples hidden I don't see. Perhaps there is some secret Sudoku, which I do not know how to use

I just this Sudoku realized what a hidden pair have seen examples, but have not reached the end until I found this
in this screenshot just leave the cell only numbers from a hidden pair, all other remove after that I have decided no problems

Oh, damn. Thank you
I'm all eyes broke, and it won what it turns out