©1990 Junichi Yananose
![Problems](/images/fraternal_twins01.gif)
![Pieces of Fraternal Twins](/images/fraternal_twins02.gif)
Adhesion area of pieces to combininf each element is 2.
4*5*6: 736 solutions
3*5*8: 365 solutions
3*5*10: 333 solutions
©1990 Junichi Yananose
Adhesion area of pieces to combininf each element is 2.
4*5*6: 736 solutions
3*5*8: 365 solutions
3*5*10: 333 solutions