Sunbeams Rainbow Puzzle
Copyright 1986 DU GLO Inc.
(plastic, pieces interlock and don't fall out when puzzle is turned over, 4.7" x 3.25" x 1/2")
Directions are on the back.
Here is every 10th position and each position that the 2x2 piece moves in a 95 rectilinear moves
(98 straight-line moves, 124 unit moves) solution;
note that at move 80,
with no change to the number of straight-line or unit moves,
an extra rectilinear move
96 rectilinear moves
keeps pieces A and B in the same left to right order at the end: