Aaaah, sounds like that's where the problem happened. I suggest cycling the centers in the order @xyzzy suggested. Cycling four centers like that actually causes parity with the edges, even though the centers themselves are correct relative to each other.No not yet. Honestly, I dont know how. However, I believe my son may have messed with the center pieces. I found them off of the cube yesterday. I put them back perfectly. I do know how they could be messed up. Its yellow on top, white on bottom, and (from left to right) blue, red, green, and orange.