Pink and Blue

Designed and made by Nob Yoshigahara, circa 1985.
(cardboard box 4.75" x 6.5" x 3/4" and wood puzzle 5+7/8" x 4+5/16" x 9/16";
9 puzzle pieces and a green keeper piece to be removed;
box cover art added by J. A. Storer)

Here is a second one, with the pieces removed on the right:



The problem is to exchange PINK and BLUE (a smaller version of the Adam & Eve puzzle). The "police" piece in the center row is a bit wider than the others so as to not fit through the slots:


Pink And Blue Solution, 44 Moves
Here is a 44 rectilinear moves solution (corresponding to 104 straight-line steps):


Pink And Blue Solution, 44 Moves - Text Format
Here is the 44 rectilinear moves solution of the preceding page in text format: