So there's some interesting behavior in this game that I thought was a bug, but now I think it's not.
So, if you start a puzzle and you go first, it won't let you solve. no letters have been revealed, only a time traveler could answer it.
But if you don't go first, and a computer guesses a letter first, it WILL let you solve.
even if their guess is wrong.
I figured that was a bug, right?
but now that I think about it, it DOES give you information: that letter is not in the puzzle.