Here's the blank. Has a less than 30% success rate with an average time over 1000 seconds:
There are two clues in there, neither of which give you more than 5 red Xs by themselves. But when you see the combination they actually represent, you get 4 green dots!
I've been having difficulty with certain types of clues, but I had to laugh when I saw it. If you don't see it, I'll post a reply. It really isn't hard, but I thought it funny.