I like this one very much. The words aren't as well hidden as one could wish. But that is a minor concern, and only to those studying the code ;-)
No; to me, the real star of the show is the input system. It feels so intuitive! Even the delete button works as expected. And that's not at all easy to program, particularly because the cursor must behave differently when it's in the last column. Very, very good work! And thank you for another puzzle game on my daily schedule ;-)