Kuroko And Dairu
Designed By Minoru Abe, purchased in Japan 2010.
(wood, 10 moving pieces, one fixed piece, and keeper, 5" x 9" x 7/8")
At the top is a lizard from a 2-unit wide and three 3-unit wide pieces.
At the bottom is a lizard from a 2-unit wide piece, a 3-unit wide piece, a 2-unit wide piece, and a 4-unit wide piece.
On the left is a 2-row high by 2-unit wide piece.
In the middle row,
two units from the left,
is a 2-unit wide piece glued to the bottom.
On the right is a 2-row high L-shaped piece has a 2-unit wide top and a 4-unit wide bottom.
Here is the start, every 8th, and the final position of an 85 rectilinear moves
(109 straight-line moves)
solution to exchange the lizards: