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Roodoku is unsolvable (11 Posts and 180 Views)
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Jan 2nd, 2018
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7 Months ago
Oct 16th, 2019 - 6:02 PM
Nr. 1 #30467
I tried numerous times now, but never was able to complete a single game. I'll alwas get stuck at some point, without any more clues on what number/egg goes where. It is utterly frustrating, as I would often have several rows with only 2 numbers missing, but no way of exclusing any one of the two possibilities. I have no idea how this was made, but it is simply impossible to solve
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Jan 30th, 2018
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7 Months ago
Oct 16th, 2019 - 6:43 PM
Nr. 2 #30469
Can you post it here? I'll give it a try.

I have noticed that several of my Roodokus, while not unsolvable, are pretty hard

I've had more than one come to a guessing game where logic has been at a total standstill

Also fun fact about Sudokus: The minimum number of clues for a uniquely solvable puzzle is 17 total numbers.
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Aug 19th, 2019
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7 Months ago
Oct 16th, 2019 - 7:02 PM
Nr. 3 #30471
All roodokus I've done so far have been solvable, but yeah as bgyoshi said, some of them are more difficult than others. There is likely an algorithm that only creates solvable puzzles but it's also sort of random at the same time so it's easy to get unlucky with a more difficult one
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Jan 15th, 2018
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7 Months ago
Oct 16th, 2019 - 7:14 PM
Nr. 4 #30472
Quote by: @Thaliel
I tried numerous times now, but never was able to complete a single game. I'll alwas get stuck at some point, without any more clues on what number/egg goes where. It is utterly frustrating, as I would often have several rows with only 2 numbers missing, but no way of exclusing any one of the two possibilities. I have no idea how this was made, but it is simply impossible to solve


Would it be possible to send a screenshot of the next unsolvable roodoku you encounter? Maybe there's something you overlooked. If it is truely unsolvable, I'll move this topic to the bugs section and notify Komodo about the issue here!

Edit: I can confirm that the algorithm doesnt create any unsolvable ones. If you still think you encountered one, feel free to post it here. Someone will find the error for sure~
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Oct 1st, 2019
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7 Months ago
Oct 19th, 2019 - 5:16 AM
Nr. 5 #30610
I think you just got a harder one at that time. The fastest time I ever had, was 1 hour! and I even reset many-many time before I could finish that.

But the one problem that I encountered was that even though I finished it more than 1 hour, it seems that I didn't get any coins. Even though the games said that I get 100 PixCoin for finishing the game > 20 mins. But until now, I still don't get the 100 PixCoin reward yet.
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Apr 6th, 2018
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7 Months ago
Oct 19th, 2019 - 6:14 AM
Nr. 6 #30613
@ergi30

If you have an adblocker enabled, you may need to temporarily disable it while playing Roodoku in order to get the PC reward.
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Feb 12th, 2018
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7 Months ago
Oct 19th, 2019 - 6:33 AM
Nr. 7 #30614
Also to mention, the game logs you off after a couple of minutes automatically. If you are logged off after you solved the puzzle you will not get your PC reward. If your time is 20+ minutes remember to open new tabs so the site thinks you're active.
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Oct 1st, 2019
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7 Months ago
Oct 19th, 2019 - 6:54 AM
Nr. 8 #30615
@Mrinja,

I see. so that's why I don't get any points. Thanks for pointing that out!
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7 Months ago
Oct 21st, 2019 - 2:45 PM
Nr. 9 #30720
I posted it in the Discord but here again for those who are not on there

This is an example of a logjam (or at least that's what I think they are referred to as by pro-sudoku players):

It's entirely possible to solve them...if you know the logic trick...
I didn't bother learning them so I don't know how to solve it (SOLVE it not GUESS it, you could guess it but then it wouldn't be a puzzle anymore, that defeats the purpose)
Look up sudoku tips and tricks or how to solve logjam sudoku if you want to learn it.


Edit: Also...this is why I doubt people when they say they don't need annotation to solve sudokus...you literally need annotations to solve logjams...unless you can visualize annotations in your head which is more believable for me
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Sep 27th, 2019
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7 Months ago
Oct 21st, 2019 - 4:23 PM
Nr. 10 #30727
@Wanderer is right, the logjams would probably be impossible to solve without annotation I tried and failed doing it on an example they posted on the discord last night... Still worth the hour of lost sleep xD, but I've found most (number) Sudokus to be nicely solvable. I am generally able to solve them in under ten minutes.

And I wouldn't chalk it up to experience; I used to do some Sudokus about ten years ago, but was never extraordinary at it or anything.

My strategy: I tend to check for numbers first -- so try to see if I can easily place 1; if I've exhausted that, check for 2s, etc., and then I try to go column-/row-/box-wise (depending on which have only one or two numbers missing), which has so far (excepting logjams, which I have not encountered/recognized yet) seemed like a pretty decent strategy.
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Jan 30th, 2018
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7 Months ago
Oct 22nd, 2019 - 5:07 PM
Nr. 11 #30869
It's even easier to just re-roll the grid until you get an easily solved one, if you're going for time :)

But yes, having annotations is a must!

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