what i think a square-3 is: edges and corners cut in half.

abetter conception of the idea might be to cut the corners into thirds...

No, he was right. A square-3 has been made and it was edges that were cut.

That will leave the edges terribly thin (15 degrees) it has been done before; but you must make perfect cuts

Month-old topic.


Every time I think of a Square-3, I would think of both the edges and the corners cut in half to 15*. (That would make for a very difficult puzzles...)