Charles:
I'm really hurt!
After all you've engaged in endless debates about the name zigzag, even answered a anonymous poster, but, didn't got time to answer the only comment about the pieces...
What can I say?
I'm really hurt and speechless, after all, in all the comments, mine was the only one to look the pieces by theirs moves as they are. I've looked to the math, not name, not value, just the formula you used to develop it.
And, I've got no answer. Why?
Here, is a space where I avoid any kind of discussion or self glorification. But I'm human too! And see a anonymous poster got answer, where the ONLY GOOD rating you got was mine... Just take a look. The only one who got you a good rating you've ignored.
Think about it!
Hugs!