>>13368101There is something strange going on with the background colour. Counting blue fields the sequence is 4, 4, 4, 3, 3, 3, 3, 4, 4. Also the spheres are not always on white fields.
Spheres on white: 4, 3, 4, 3, 2, 4, 2, 3, 4.
My guess is that the background colour patterns drive the next pattern of spheres.
