this post was submitted on 01 Aug 2023
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Yup, you got it :)
Yeah, but only where you have come to a place where a 50-50 guess is needed, when you get used to solving good puzzles you learn how to figure it out, and there is a lot of checkers that you can run on puzzles if you're not sure, and if you find one with multiple solutions you just evade that source.
Also There are known good sources for puzzles, ones that are proper puzzles, so the best choice is just to keep at them.
Guessing is used in speedsolving, where they solve the puzzles really fast. Guessing is a valid technique in picross as well, you can just guess if a cell is filled or not, it's exactly the same in sudoku, you just cheat yourself, and it's a big likelihood that you made the puzzle unsolveable, personally I find it not very gratifying to guess, so I never do.
Yeah, some of the techniques, like finned fishes, Alternate inference chains and 3d-Medusa and so on can get a bit involved, so if you haven't seen them before it's hard figure them out by yourself. I used to moderate the r/sudoku sub over at reddit, where we used to help people solve a lot of puzzles they were struggling with. But really difficult stuff like that usually aren't in printed puzzles, they seldomly have anything more complex than an X-wing.
If you want to learn about techinques https://hodoku.sourceforge.net/en/techniques.php is a really good source, and hodoku is a really good solver too in case you want to learn, if you want something online there is https://sudokuwiki.com which is decent as well :)
Hah, you're welcome, I've been solving for around a decade now, and it's still fun to me, so at least there is something for it.
Thanks for such a detailed response, and the links.
I just checked and there aren't many Sudoku communities. Only 2, and one of them has only one post, by the creator himself, asking for help on a Sudoku he is stuck on. And the second community is similar, with the creator looking for mods. Why not join one of these (or create your own, if you like), and spread the joys of Sudoku?
I don't know, I'm currently enjoying my break, but maybe I will :) For now I'm doing random acts of sudoku if someone mentions it :)
Haha, sure. I am saving your name, going to ping you whenever someone mentions anything sudoku related ๐