Isn't this simply a game about how to do a binary search of a dictionary? How is that exciting?
Once I started to narrow it down it became difficult to find words between my constraints. In one case I was making assumptions about what letters can come after other ones while trying to generate a new word (and being aware of this isn't enough to stop it.) And then, in the last case, when I had it narrowed between and ed (think jump and jumped, for example), my brain only wanted to search for words that were conceptually related to xyz. This was a mistake, the goal word started with xyz but was not related to it conceptually, but again, an awareness that my brain was favoring a search of the concept space rather than searching the dictionary alphabetically was not enough to remedy it.