# Thoughts on Puzzle 30 : Build-Your-Own-Sudoku **URL:** \ **Category:** General\ **Tags:** open-discussion, hack-the-galaxy\ **Created:** [September 1, 2022, 9:34am UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462 "2022-09-01T09:34:26Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Amit\_Leibovitch](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/amit_leibovitch/32/1763_2.png) [@Amit\_Leibovitch](https://community.rapyd.net/u/Amit_Leibovitch)\ **Post date:** [September 1, 2022, 9:34am UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/1 "2022-09-01T09:34:26Z")
I was wondering about clue number (7) , givens increase in value in rows 5 and 7, does that mean the first letter of row 7 is bigger than the last letter of row 5? or each row is calculated independently? share your thoughts 🙂 ---
**Author:** ![marinamvt](https://avatars.discourse-cdn.com/v4/letter/m/8491ac/32.png) [@marinamvt](https://community.rapyd.net/u/marinamvt)\ **Post date:** [September 1, 2022, 11:21am UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/2 "2022-09-01T11:21:15Z")
I’d say it’s for each independently (haven’t solved it yet though) ---
**Author:** ![BadPirate](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/badpirate/32/17436_2.png) [@BadPirate](https://community.rapyd.net/u/BadPirate)\ **Post date:** [September 1, 2022, 5:04pm UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/3 "2022-09-01T17:04:36Z")
They are calculated independently, can confirm as I’ve solved it. Good luck! 👍 ---
**Author:** ![AlexM](https://avatars.discourse-cdn.com/v4/letter/a/3da27b/32.png) [@AlexM](https://community.rapyd.net/u/AlexM)\ **Post date:** [September 1, 2022, 6:21pm UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/4 "2022-09-01T18:21:22Z")
is the answer by any chance in german? or is it two words? IDK seems like i met all requirements solved the Sudoku but not getting coherent answer. sounds like a name of a Korean horror movie. but when i enter it i get incorrect answer. ---
**Author:** ![MarcinJ13](https://avatars.discourse-cdn.com/v4/letter/m/7c8e57/32.png) [@MarcinJ13](https://community.rapyd.net/u/MarcinJ13)\ **Post date:** [September 1, 2022, 7:06pm UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/5 "2022-09-01T19:06:35Z")
I finished it as well. Takes time, but possible to solve. AlexM: No it is NOT a german word. ---
**Author:** ![GarlicSwindler](https://avatars.discourse-cdn.com/v4/letter/g/ce73a5/32.png) [@GarlicSwindler](https://community.rapyd.net/u/GarlicSwindler)\ **Post date:** [September 1, 2022, 10:26pm UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/6 "2022-09-01T22:26:33Z")
When does this puzzle expire? ---
**Author:** ![SpacePanda](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/spacepanda/32/5060_2.png) [@SpacePanda](https://community.rapyd.net/u/SpacePanda)\ **Post date:** [September 2, 2022, 3:18am UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/7 "2022-09-02T03:18:38Z")
Any tips on how to approach the puzzle? ---
**Author:** ![MarcinJ13](https://avatars.discourse-cdn.com/v4/letter/m/7c8e57/32.png) [@MarcinJ13](https://community.rapyd.net/u/MarcinJ13)\ **Post date:** [September 2, 2022, 6:16am UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/8 "2022-09-02T06:16:43Z")
It seems that there are two topics about Thoughts on Puzzle 30… I have already provided some info in the other one. What I did is I created a table (excel) with numbers 1-9 at the top and given letters on the side. First I took most simple to implemt rules and marked those numbers that cannot be used (due to row number). Once I gone through all rules at least once, I started linking them together. Important two are rule 11 and rule 6. Try to list all combinations and see which results in having correct number of letters. Then check again all other rules. Rinse, Repeat… Once you solve all the given values it is juste a regular sudoku. ---
**Author:** ![worior863](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/worior863/32/17869_2.png) [@worior863](https://community.rapyd.net/u/worior863)\ **Post date:** [September 2, 2022, 11:13am UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/9 "2022-09-02T11:13:56Z")
Yeah, the hardest for me so far and thus the most satisfying after solving it, especially the final run to the end, which was making rule 6 true. I was solving it for two days and I must say, I don’t want to see any sudoku for a while. 😃 ---
**Author:** ![GarlicSwindler](https://avatars.discourse-cdn.com/v4/letter/g/ce73a5/32.png) [@GarlicSwindler](https://community.rapyd.net/u/GarlicSwindler)\ **Post date:** [September 2, 2022, 9:11pm UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/10 "2022-09-02T21:11:03Z")
Too much information to be giving out, methinks ---
**Author:** ![Omer\_Mor](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/omer_mor/32/8193_2.png) [@Omer\_Mor](https://community.rapyd.net/u/Omer_Mor)\ **Post date:** [September 3, 2022, 8:34am UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/11 "2022-09-03T08:34:23Z")
It was a very hard puzzle - and eventually I gave up. BUT - I was able to find the correct answer nonetheless … I’ll give more details after the puzzle is closed. 😃 ---
**Author:** ![Livi1010](https://avatars.discourse-cdn.com/v4/letter/l/e274bd/32.png) [@Livi1010](https://community.rapyd.net/u/Livi1010)\ **Post date:** [September 3, 2022, 9:11am UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/12 "2022-09-03T09:11:10Z")
Find out anything? Nothing is registering. I’m getting so frustrated!! ---
**Author:** ![JaiinaK](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/jaiinak/32/18733_2.png) [@JaiinaK](https://community.rapyd.net/u/JaiinaK)\ **Post date:** [September 3, 2022, 9:47am UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/13 "2022-09-03T09:47:07Z")
I gave up the puzzle after trying to solve it 4 times and failing every time. I’m sure some of the numbers I placed are correct, but I can’t figure out where I made a mistake, as I always have the same numbers left when I solve the clues. I’ll wait for your advices after the puzzle has expired because I still want to solve it 😄 ---
**Author:** ![worior863](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/worior863/32/17869_2.png) [@worior863](https://community.rapyd.net/u/worior863)\ **Post date:** [September 3, 2022, 2:22pm UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/15 "2022-09-03T14:22:55Z")
What do you mean? Where did you get this info? This sudoku keeps sudoku rules. You interpreted this condition incorrectly ---
**Author:** ![Luisa](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/luisa/32/10357_2.png) [@Luisa](https://community.rapyd.net/u/Luisa)\ **Post date:** [September 3, 2022, 8:18pm UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/16 "2022-09-03T20:18:06Z")
So it says letters A-Z but I only see A-X am I missing something or is it supposed to be 24 letters? ---
**Author:** ![Luisa](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/luisa/32/10357_2.png) [@Luisa](https://community.rapyd.net/u/Luisa)\ **Post date:** [September 3, 2022, 8:39pm UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/17 "2022-09-03T20:39:50Z")
Same… ☹ I checked everything 3 times and always got the same result, I can’t see where I’m doing it wrong ---
**Author:** ![Yvette7](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/yvette7/32/3616_2.png) [@Yvette7](https://community.rapyd.net/u/Yvette7)\ **Post date:** [September 4, 2022, 3:46am UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/18 "2022-09-04T03:46:13Z")
I agree. I found this puzzle the most difficult of all. Having to review each Given rule and ensure I was interpreting them correctly was key. Had to pause, refresh and try agaib repeatedly. But when it finally clicks it’s golden. ---
**Author:** ![Pictishfrog](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/pictishfrog/32/19835_2.png) [@Pictishfrog](https://community.rapyd.net/u/Pictishfrog)\ **Post date:** [September 4, 2022, 7:38am UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/19 "2022-09-04T07:38:25Z")
Yep feel like I’ve lost two days of my life solving this but very satisfying to complete it ---
**Author:** ![waixingren](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/waixingren/32/17659_2.png) [@waixingren](https://community.rapyd.net/u/waixingren)\ **Post date:** [September 5, 2022, 12:12am UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/20 "2022-09-05T00:12:34Z")
![sudoku-edge-space](https://us1.discourse-cdn.com/flex016/uploads/rapyd/original/3X/8/e/8e30b2bf0f35af505736d1947b87454e5a0667b4.gif) ---
**Author:** ![Omer\_Mor](https://sea2.discourse-cdn.com/flex016/user_avatar/community.rapyd.net/omer_mor/32/8193_2.png) [@Omer\_Mor](https://community.rapyd.net/u/Omer_Mor)\ **Post date:** [September 5, 2022, 9:27pm UTC](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462/21 "2022-09-05T21:27:16Z")
So… As I said - I was not able to solve the soduko itself. BUT - each letter in the final answer is derived from a single digit of 1…9 plus some given number. This means that each letter only has a range of 9 specific letters. For example, the first letter is the (alpha-converted) top-left digit + 2. So the minimal letter is ‘C’ (1+2 = 3 → C) and the maximal letter is ‘K’ (9+2 = 11 → K). Using this insight it’s easy to construct the following regular expression for the code word: `^[c..k][a..i][e..m][g..o][h..p][d..l][c..k][a..i][q..y]$` When running this regex on an English dictionary, you get very few hits, and only one of them makes sense. And this is indeed the solution. [Next page](https://community.rapyd.net/t/thoughts-on-puzzle-30-build-your-own-sudoku/55462.md?page=2)