I think there’s a problem with the puzzle maker. It doesn’t let me enter a max G-U value that’s as high as the one I’ve solved my puzzle with. For instance, I made a puzzle and solved it with 65 G-U pairs, but when I try to set the min G-U value, it only accepts about as high as 40. The error message says the number has to be between 0 and 65, but anything above about 40 triggers the error message.
I took a screencap:
This may be related to the fact that only (1/3? 2/3?) of the pairs can be required to be GU, as anything higher would be unrealistic in the real world.
What LFP6 said.
To me, the real glitch is how the two popups overlap… that’s pretty annoying, IMO 
It’s 1/3.
That’s where the explanation is hidden. We’ve brought it up to dev before but can’t hurt to bring it up again I guess!
Thanks for the info, everyone!
I have added the issue of overlapping windows to the Wiki holding page until the devs can take a look: http://eternawiki.org/wiki/index.php5…