On Jun 29, 2016, at 12:32 PM, James Propp <jamespropp@gmail.com> wrote:
Does anyone understand the solution presented at https://en.wikipedia.org/wiki/Instant_Insanity ?
(I don't.)
More broadly, does anyone know of SOME way of solving the puzzle that doesn't involve a goodly amount of trial-and-error?
Jim Propp
This is reasonably fast: 1. Arrange the cubes on a table in a horizontal stack, say along the x axis. 2. By turning cubes about the x axis, make the side facing you (+y) and the opposite side (-y), a permutation of the four colors. Get good at this because you’ll have to do it again! 3. Rotate each of the cubes 90 degrees about z, the vertical axis, but keep them stacked along x as in 1. 4. Repeat 2. 5. Rotate each cube by 90 degrees, now about the y axis. -Veit