If I omitted any puzzle with alternate obscure solutions, the vast majority of puzzles would be invalid. There are a lot of obscure words.
If on the other hand I set it to accept the alternate obscure solutions, that actually could ruin the puzzle in my opinion.
Take today's with BRA for example - it's a nigh-certainty that the commenter suggesting BRA did not know the archaic alternate spelling of BRAWL. What's much more likely is that they saw "BRASS", then checked ZE and saw "ZEBRA", and then thought "I wonder if BRALL is a word?" and googled it to find that it was indeed a word in a very obscure sense.
Check this google n-gram for a reference of just how obscure that word is - it hasn't registered meaningfully anytime in several centuries. I added in the word "quine," another obscure word, just for comparison, and you can see it's orders of magnitude less common even than that. https://books.google.com/ngrams/graph?content=brall%2Cbrawl%...
So what would start happening is people would find something that worked for 2 of 3 (which is easy), type it in cuz why not it might work, have it succeed because the 3rd option was written once by a Gregorian monk in a remote monastery in the Balkan Mountains, and be like "huh, well that's dumb." It's actually a lose-lose that would let people off easier because they'd feel like it was done just because they found something that matched 2 of 3 and happened to match the 3rd in a fairly ridiculous way.
Edit: I came up with a solution to this. I'll verify each puzzle against a full dictionary with obscure words included, and if a user puts in a valid obscure solution I'll display a message saying "Valid, but at least one of these words is too obscure. A better solution exists." It'll take a little time to add that functionality though.
If on the other hand I set it to accept the alternate obscure solutions, that actually could ruin the puzzle in my opinion.
Take today's with BRA for example - it's a nigh-certainty that the commenter suggesting BRA did not know the archaic alternate spelling of BRAWL. What's much more likely is that they saw "BRASS", then checked ZE and saw "ZEBRA", and then thought "I wonder if BRALL is a word?" and googled it to find that it was indeed a word in a very obscure sense.
Check this google n-gram for a reference of just how obscure that word is - it hasn't registered meaningfully anytime in several centuries. I added in the word "quine," another obscure word, just for comparison, and you can see it's orders of magnitude less common even than that. https://books.google.com/ngrams/graph?content=brall%2Cbrawl%...
So what would start happening is people would find something that worked for 2 of 3 (which is easy), type it in cuz why not it might work, have it succeed because the 3rd option was written once by a Gregorian monk in a remote monastery in the Balkan Mountains, and be like "huh, well that's dumb." It's actually a lose-lose that would let people off easier because they'd feel like it was done just because they found something that matched 2 of 3 and happened to match the 3rd in a fairly ridiculous way.
Edit: I came up with a solution to this. I'll verify each puzzle against a full dictionary with obscure words included, and if a user puts in a valid obscure solution I'll display a message saying "Valid, but at least one of these words is too obscure. A better solution exists." It'll take a little time to add that functionality though.