[prometheus76]

This is a great puzzle and I am not smart enough to figure out the patterns.

[dayjaby]

You can try to find combinations that only permutate parts of the whole thing, with the rest staying as before.

Let me give an example if the last row of a 3x3 is already correct.

MU - UL - MD

Middle Up: you break the correct row temporarily with this.

Up Left: you do something with the other tiles

Middle Down: re-correct last row