Will your engine play better or worse?

[Zach Wegner]

Hehe, it's an old idea I had in my old engine. It never quite worked out, but it's probably because of bugs. It's to me a rather obvious idea, I'm surprised that nobody else has thought of it.

AFAICT I came up with it in Dec 04 based on "forensic evidence".
http://www.stmintz.com/ccc/index.php?id=403370
Here's an example of there being some bugs (probably with how the implementation relates to null move):
http://www.stmintz.com/ccc/index.php?id=403373

I think the observant reader can figure out the idea from the search output shown.