What, one can re-use a gray letter in hard mode? That's not hard enough!. I find the fun challenge isn't finding the final word but finding valid guesses (i.e.

What, one can re-use a gray letter in hard mode? That's not hard enough!. I find the fun challenge isn't finding the final word but finding valid guesses (i.e. words that exist and aren't using any grays) along the way.