This is excruciatingly difficult. I have no experience with this sort of a test, and the method that I chose (albeit quickly and without a whole lot of thought)

This is excruciatingly difficult. I have no experience with this sort of a test, and the method that I chose (albeit quickly and without a whole lot of thought) was to pick four sides that were touching, and try to find the one pattern that didn't have the same four sides touching. This logic obviously didn't work, because I got 1 / 9. Does anyone have a strategy for this, or is it pure logic?