[SantalBlush]

If there is only one solution, no progression, and each of the three words is meant to be commonly known, then what is the point in adding an input field to check whether I have the correct answer?

If I have my three letters, then I can easily see for myself whether or not my guess is correct just by looking at the screen; the input field does not help me at all.

[triword]

A question I asked myself when I first created it. Some people will be annoyed by that, some won't. It's fine if you're the former! but the fact is, without an input field, there's no way to verify that your solution is accepted and mark the puzzle as completed.