The boards are not rectangles.
They are triangles with the base to the left and the points to the
right.

Correct, the pieces aren't triangles but you've got the right idea,
they are wider on the back end and thinner on the front.

There is a photo of the stack from a different angle he

http://pzphotosan58.blogspot.com/

I also posted a link to the site where I got the idea for this project.


Rob