All I've never done the diagonals before... oops.
replyhttps://imgur.com/a/Dfxf9CJ (before picking 2 / 6 / 7.)
https://www.sudokuwiki.org/sudokux.aspx is a useful site. I'm personally a fan of the killer variety.
replyIts solver is interesting in showing the individual steps.
For the same puzzle, https://www.sudokuwiki.org/sudokux.aspx?bd=06039000804900150...
if you like sudoku, you owe it to yourself to check out the "cracking the cryptic" youtube channel and get introduced to the delightful world of variant sudoku.
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