Instant Insanity II consists of 4 linear columns and 4 circular rows of colored tiles on
a cylinder. Above the 4 rows of tiles, at the top of the cylinder, there is an extra row,
which we call the top ring, with two adjacent empty slots. The bottom row of the cylinder
and the top ring, with its two slots for tiles, rotate. Each tile may slide up or down its
column, alone or with other tiles of the column, if the column contains an empty slot. The
16 tiles are of ve colors: four blue tiles, and three each of red, green, yellow, and white
tiles. Instant Insanity II's classic challenge is to congure the tiles so that each row and
Every permutation of the tiles can be obtained