# \[Resolved\] Isn't Puzzle 40 just barely under-constrained? **URL:** \ **Category:** General\ **Created:** [September 26, 2022, 2:18am UTC](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605 "2022-09-26T02:18:52Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![zygopteran](https://avatars.discourse-cdn.com/v4/letter/z/a183cd/32.png) [@zygopteran](https://community.rapyd.net/u/zygopteran)\ **Post date:** [September 26, 2022, 2:18am UTC](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605/1 "2022-09-26T02:18:52Z")
**Update: I was wrong!** ([[Resolved] Isn't Puzzle 40 just barely under-constrained? - #10 by zygopteran](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605/10)) Here’s what I had said: > I believe that [Puzzle 40](https://community.rapyd.net/t/puzzle-40-making-space/57169) is just slightly under-constrained, so that there are actually two slightly different correct solutions to the given name-score-material-project matching problem. This results in two somewhat different arrangements of Os in the first grid, and thus two somewhat different text strings emerging via the word grid, of which only one actually makes sense, and indeed the corresponding answer is accepted on [the solve page](https://www.hackthegalaxy.dev/solve/). So this isn’t a huge deal, but I thought I’d point it out in case someone might want to have a look. Thanks! 🙂 ---
**Author:** ![Hoodiehugs](https://avatars.discourse-cdn.com/v4/letter/h/46a35a/32.png) [@Hoodiehugs](https://community.rapyd.net/u/Hoodiehugs)\ **Post date:** [September 26, 2022, 2:32am UTC](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605/2 "2022-09-26T02:32:32Z")
Pretty sure this was on purpose. The guess work is just part of the puzzle. If it’s not this, then it’s that. Like you said, it’s pretty easy to figure out which is correct when going through the letters. ---
**Author:** ![KreherFA](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/kreherfa/32/12655_2.png) [@KreherFA](https://community.rapyd.net/u/KreherFA)\ **Post date:** [September 26, 2022, 2:38am UTC](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605/4 "2022-09-26T02:38:37Z")
This puzzle reminds me the Einstein riddle from the TED ed. [Can you solve "Einstein’s Riddle"? - Dan Van der Vieren - YouTube](https://www.youtube.com/watch?v=1rDVz_Fb6HQ&ab_channel=TED-Ed) ---
**Author:** ![AlexM](https://avatars.discourse-cdn.com/v4/letter/a/3da27b/32.png) [@AlexM](https://community.rapyd.net/u/AlexM)\ **Post date:** [September 26, 2022, 3:13am UTC](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605/5 "2022-09-26T03:13:45Z")
No guess work is required if you follow the logic it all fits. Side note Still not getting confirmation e-mail. ---
**Author:** ![SDDA](https://avatars.discourse-cdn.com/v4/letter/s/91b2a8/32.png) [@SDDA](https://community.rapyd.net/u/SDDA)\ **Post date:** [September 26, 2022, 3:20am UTC](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605/6 "2022-09-26T03:20:30Z")
I concur. The logic all fits and no guesswork. I’ve been getting emails so not sure how to advise you there. ---
**Author:** ![KreherFA](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/kreherfa/32/12655_2.png) [@KreherFA](https://community.rapyd.net/u/KreherFA)\ **Post date:** [September 26, 2022, 3:50am UTC](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605/7 "2022-09-26T03:50:38Z")
Solved it. Not too difficult once you understand the logic. ---
**Author:** ![DocWiley](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/docwiley/32/16679_2.png) [@DocWiley](https://community.rapyd.net/u/DocWiley)\ **Post date:** [September 26, 2022, 5:19am UTC](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605/9 "2022-09-26T05:19:52Z")
When applying all of the rules (and some less conspicuous inherited ones), there is definitely one result. ---
**Author:** ![zygopteran](https://avatars.discourse-cdn.com/v4/letter/z/a183cd/32.png) [@zygopteran](https://community.rapyd.net/u/zygopteran)\ **Post date:** [September 26, 2022, 5:40am UTC](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605/10 "2022-09-26T05:40:48Z")
Well, my fourth check did the trick. Thanks, everyone. @KreherFA, @AlexM, @SDDA, and @DocWiley, I understand what led me half-astray. One of the requirements (I won’t say which), if interpreted as surely intended, eliminates the invalid one out of the two solutions I was seeing. It really is a slightly subtle thing, but I should have seen it earlier. Mea culpa! Thanks again, folks, and sorry for the hassle. You were right. I’ll delete my earlier posts in a moment. 🙂 ---
**Author:** ![MarcinJ13](https://avatars.discourse-cdn.com/v4/letter/m/7c8e57/32.png) [@MarcinJ13](https://community.rapyd.net/u/MarcinJ13)\ **Post date:** [September 26, 2022, 6:09am UTC](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605/11 "2022-09-26T06:09:08Z")
I also have initially got two solutuions, but eventually found the condition that limited it to just one. Solution accepted, email received, ---
**Author:** ![xand](https://avatars.discourse-cdn.com/v4/letter/x/9de0a6/32.png) [@xand](https://community.rapyd.net/u/xand)\ **Post date:** [September 26, 2022, 7:52am UTC](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605/12 "2022-09-26T07:52:18Z")
nice quick bit of fun! only 2 more to go, gonna be a shame when it ends, unless I get to space, then it will be less of a shame it ended ---
**Author:** ![apemu](https://avatars.discourse-cdn.com/v4/letter/a/57b2e6/32.png) [@apemu](https://community.rapyd.net/u/apemu)\ **Post date:** [September 26, 2022, 9:30am UTC](https://community.rapyd.net/t/resolved-isnt-puzzle-40-just-barely-under-constrained/57605/13 "2022-09-26T09:30:05Z")
I’ve been getting the emails as well.