Thanks for the explanations, Unike. I'm sure that I've used tandem virtuals, without knowing the term. I've also seen bent unique rectangles, without knowing either the term or how to benefit from the setup. So now I've learned something new and will be waiting for a chance to apply it!
No offense taken, Angie. I recognize it was in fun. And I'm a tough old bird. And I love it when people call me UTH.
Interesting argument about upper left block in today's puzzle, although there is a more prosaic way to come to the same conclusion.
Did it, no green. Lots of tandem virtuals today. I'll say 26.