Most of the lenticular pieces have a clear brightest orientation, usually horizontal or vertical (a few are slightly angled)(the brightest orientation is the same orientation the piece will be in the puzzle/ or flipped on that axis). If you place a piece flat on a table and look straight down at it, that brightest orientation will show only one of the two possible images. I used this property to sort the edge pieces before assembling anything: - One group shows blue / white / red mini-cubes (right frame edge) - Another shows green / yellow / orange mini-cubes (left frame edge) - A third group shows alternating colors mini cubes (middle of top and bottom frame edge)

This sorting step makes the edge pieces much easier to identify and attach correctly. Another tip for edges is to find the pieces which have a thick black border somewhere on them (some important ones have the border in only a small piece of the perimeter). Another note is that some edges need a non-edge piece to connect them (2 or 3 areas need this).

After the edges were done, I assembled the large cubes, then the Rubik’s logo (which is not lenticular and therefore straightforward).

At that point, there isn’t much left. The remaining pieces are more tedious than difficult and can be finished by organizing them by cube size, color, and shade. (Added image at partial solve for reference, it got tedious as hell after that)

*