String Theory?

Nice one!

Thank you Kirsten, I'm glad you liked the string :~)

Happy to have helped Montreal13!!!

Now I understand ! Thanks monza !

Interesting change of pace, Mandy. I like the string! Thanks. :)))

LOL - Pat I wondered who would pick up on the title!!! Congratulations - you were on the same wave length as me, and with the frame!!

At last--a version of string theory that I can understand! Cool puzzle, Mandy--and the frame is pulling an Escher on me as I watch...!