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A Comprehensive Guide to Petrus

a way to do 2x2: make roux first square with a pair in the back and solve the last edge
i got a 1.11 2x2x2 ao12 with this method and the 222 is always in LBD with 0 rotations and nice ergonomics and its still efficients
 
Doing it the same way every time isn't a great idea. Of course, being able to do it that way as a fall back stratergy is good, but what you'll find is that maybe a third of the time, that will be the best approach, about a third will be the same thing but the square is on U and another third with the square on D, along with a few special cases.
 

Old guide of mine, but still relevant given the post I'd say.
 
Nice guide! Had I just read this earlier...
The last section is only a bit messy. I'd separate 2x2x2 and 2x2x3 + "How to improve" from the "Inspection" and "common cases" sections. (I haven't read them yet, but having nested spoilers is not really nice).
Also, don't forget the block trainer
 
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