The Sudoku puzzle format consists of (usually) a 9 by 9 grid that must be filled with numbers. The classical Sudoku rules are as follows

  1. Each row must contain all of the digits from 1 to 9, with no repetitions
  2. Each column must contain all of the digits from 1 to 9, with no repetitions
  3. Each sub square (3x3 grids marked by bold lines) must contain all of the digits from 1 to 9, with no repetitions

The historical inspiration of Sudoku begins with the Latin square, a type of grid problem similar to Sudoku in that it consists of an N by N grid where N digits (or letters) must be arranged in accordance with rules 1 and 2 of Sudoku (the sub square had yet to be invented). The first known example of a 9 by 9 Latin Square is from a monograph over 300 years ago, written by the Korean mathematician Choi Seok-Jeong. However, the Latin Square was popularized in the west by the legendary mathematician Leonhard Euler, who independently invented it almost 70 years after Choi Seok-Jeong.

According to Christian Boyer (idk who this is), on July 6th, 1895, the french newspaper La France published the earliest known example of a “true” Sudoku puzzle following all 3 rules of modern Sudokus, although french newspapers had previously been publishing similar (but different) puzzles prior. The name “Sudoku” itself (meaning “single digit”) comes from Japanese magazines in which the game was popular during the 80s and 90s.

In Modern times, the Sudoku puzzle scene has been blessed with the addition of numerous variants, that add on additional rules, elevating the puzzle. The puzzle in the provided image is one such example, known as the “miracle Sudoku”. It comes with 3 additional rules on top of the 3 original.

  1. If 2 digits are separated by a knight’s move in chess, then they cannot be the same
  2. If 2 digits are separated by a king’s move in chess, then they cannot be the same
  3. If 2 digits are adjacent (left, right, down or top, none of the diagonal directions), then they cannot be consecutive (ex - 5 and 6, or 7 and 8)

As can be seen from the fact that only 2 digits have been provided to start with, modern Sudoku authors are big fans of making puzzles that appear to be impossible to solve. This of course, is my favorite part about modern Sudoku. If you want to try to solve the miracle Sudoku, here is the link.

Some of the other example variants add new rules, such as German whispers, Dutch whispers, Renban lines, Entropy lines, Thermometer lines, killer cages and many more. You can find a massive collection of these puzzles on the logic-masters website.


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As a reminder, please do not discuss current struggle sessions in the mega. We want this to be a little oasis for all of us and the best way to do that is not to feed into existing conflict on the site.

Also, be sure to properly give content warnings and put sensitive subjects behind proper spoiler tags. It’s for the mental health of not just your comrades, but yourself as well.

Here is a screenshot of where to find the spoiler button.

  • gaystyleJoker [she/her]@hexbear.net
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    3 months ago

    hi, does anyone wanna make the mega in the upcoming weeks? if so, reply to this post and i’ll add you to the list!

    the list as it stands:

    peanutbuttercupola* (7/21 - 7/27) 
    oscardejarjayes* (7/28 - 8/3)   
    BountifulEggnog* (8/4 - 8/10)
    Seryph (8/11 - 8/17)
    Shaleesh (8/18 - 8/24)
    GayTuckerCarlson* (8/25 - 8/31)
    Eco* (9/1 - 9/7)
    nemmybun (9/8 - 9/14)
    Disaster_of_Passion* (9/15 - 9/21)
    Carcharodonna* (9/22 - 9/28)
    sodium_nitride* (9/29 - 10/5)
    
    Wmill (10/27 - 11/2)
    

    ​ * after name denotes someone who has posted before and will be skipped by first-time posters

  • Demifriend [she/her]@hexbear.net
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    3 months ago
    workplace discrimination, venting

    Walked out of my job today. For the last couple years at least we’ve had a side bathroom in the building that was used as the employee bathroom, and last week management decided that isn’t allowed any more with no warning and no explanation. I’m one of several trans employees who are there and we are all very upset about this, I made it explicitly clear that I don’t feel safe using a public bathroom and I know I’m not the only one. We’ve been making some efforts to continue using it anyways but after some back and forth, yesterday the key to the bathroom was either well hidden or taken out of the building completely, and then last night they literally drilled screws into the door frame to make sure we can’t use it.

    That was the final straw, so this morning at a team meeting in front of everyone I read out some relevant statistics about anti-trans violence and talked about my own experiences with anti-trans violence (because I didn’t feel like they were taking my safety concerns seriously), told them again that I cannot safely work if I cannot safely use the bathroom, and then told them either they allow access to the employee bathroom again or I will not work until they do. They gave me some weasel-y answer and refused to respond when we called them out on things they said not being true or helpful, and so I left.

    I wish I could have organized it as a full strike but we aren’t unionized and without going into too much detail the chances of us successfully unionizing is very low. At this point I might try anyways though cause there’s nothing left for me to lose here, I doubt I can keep my job if they wouldn’t even hear me out. I know several people are probably going to follow me and quit anyways because a lot of people are very upset both for me and themselves. Some of my coworkers were crying while talking to me after the fact. It just is so frustrating, I know that I do a good job and they know it too, I don’t want to quit, but what can I do. I’m just going to start looking for new work and stress about it until I can find something.

    • Demifriend [she/her]@hexbear.net
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      3 months ago

      by the way if anyone has advice on how to tackle this situation you are welcome to share it. my plan is to just stick to my guns and try and find alternative work as soon as possible

      • WoodScientist [she/her]@hexbear.net
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        3 months ago

        they literally drilled screws into the door frame to make sure we can’t use it.

        Get a screwdriver or a sawzall and open the damn door yourself. Or just piss on the door to the bathroom.

        • Demifriend [she/her]@hexbear.net
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          3 months ago

          We actually did manage to remove some of the screws but were unable to remove the last one because we didn’t have the tools for it at the moment lol. I brought my own drill in this morning to take them out but they also got ahold of our spare key so we have no way to get in now even without the screws. I should have gone and made a bunch of copies of the key while I still had the chance…

  • EstraDoll [she/her, he/him]@hexbear.net
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    4 months ago

    there is no U in the Latin language, the letter V was used in its place and generally interchangably

    blob-no-thoughts mmhmmm, yep

    the V sound in Latin is, historically speaking, a more modern invention of Ecclesiastical Latin. The Romans, more commonly spoke the letter V with what we now have as the U sound. Caesar likely would have said it like Weni, Widi, Wiki

    puzzled okay? where are you going with this?

    realistically, the Romans were all calling her “Weenus” and that’s most likely the most authentic way of referring to her

    agony wait wtf why

  • Demifriend [she/her]@hexbear.net
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    3 months ago
    Update on my job shit if anyone cares

    I spoke on the phone with the HR rep and my walking out of the meeting was considered abandoning my post or something and so as far as the company is concerned I have quit and that was my last day. I’m gonna push for unemployment anyways but idk if there’s anything I can do about it. I’m feeling really depressed about it ngl, I didn’t like my job at all recently but I still did a good job and would have stuck around if they didn’t effectively force me out. I hope I can find a new job soon.

    • segfault11 [any]@hexbear.netM
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      3 months ago

      managers are naturally occurring portapotties the “”“”““law””“”“” prevents real humans from using

  • TheSpectreOfGay [hy/hym, she/her]@hexbear.net
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    4 months ago

    having a not great day and i made the mistake of looking at contrapoints drama shit

    CW Abuse / transphobia

    So many people are saying that if you think she’s a shitty person for being pro-genocide, you’re transphobic/transmisogynist. Which is nothing new but, since I’m so divorced from drama nonsense most of the time I haven’t seen it in a while. So it just immediately made me flashback to my abusive ex trying to convince all of our mutual friends I broke up with them because I was a transmisogynist. Bc according to them I read their actions as masculine and got scared bc men are scary, not i got scared of being publicly insulted and shit talked for mildly disagreeing on something.

    I hate it here kitty-birthday-sad

  • sodium_nitride [she/her, any]@hexbear.netOP
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    3 months ago

    Gender affirming inconvenience?

    I went outside without a bra by accident. Had to literally hold up my boobs while running down the stairs to prevent them from bouncing. Was a very awkward walk to the supermarket with my little brother who doesn’t know I’m trans*. I had to hold up the shopping bag and umbrella strategically to cover up.

    Sometimes, I feel like you could make a sitcom out of my life.

    *Although I have been dropping incredibly subtle hints in the form of LGBT memes. It is a good sign that he responded positively, but that little fucker can’t keep his mouth shut, so I’ll keep my mouth shut instead.

  • BountifulEggnog [she/her]@hexbear.net
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    3 months ago

    Finally added my trans cousin on insta, they just posted a mao meme about killing landlords waow-based and have they/it/she pronouns waow-based

    We haven’t talked in so long and I really badly want a friendship with her… so bad at making new friends though…

      • BountifulEggnog [she/her]@hexbear.net
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        3 months ago

        Yea, that doesn’t mean I’m good at building or maintaining relationships though. Especially because I don’t know what we’d do together- idk if she games, we live very far too so real life hanging out is impossible. idk.

        • TerminalEncounter [she/her]@hexbear.net
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          3 months ago

          I build relationships and friendships by doing stuff with people! Hopefully you can both game together, that’s a cool idea.

          If it doesnt, its your cousin right? You could call it or zoom or whatever. I dunno if its a social faux pas to call people on their phones (not making a joke, I suspect its considered one cause my gen z little sisters are bewildered when I do lol), but I still call my friends out of the blue and chat every once in a while to keep up. Tell them I love them. I think you crossed the critical threshold by being family, let’s you have some automatic familiarity - hopefully enough to text or game or call or video chat.

          That would be so nice for the both of you to have each other! None of my cousins are trans, a few are still in the LGBT otherwise, but Im the only transgender person 😫

          • BountifulEggnog [she/her]@hexbear.net
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            3 months ago

            I know that’s what I need to do, but idk. I have tried that with some people and I think we both wanted it to work out, it just didn’t. That recent falling through has had me feeling pretty bad about it but I guess I haven’t really talked about it. Hope we can game because I literally don’t know what else there is over the internet.

            Yea we could. tbh I haven’t had much to do with them for years at this point, really haven’t seen them since we were kids. Just distance mostly. It kinda is among gen Z, I would find it very weird and kinda concerning if one of my friends called me out of the blue, or tbh wanted to call at all. I hope so too, need to send the first message. I’ve been trying to workshop it, I’m not really sure what I should open with or when I should tell them I’m trans. I want to early but I don’t know. Its very hard to decide what to say sometimes, especially when its something new like this…

            Damn :cat-trans:

  • sodium_nitride [she/her, any]@hexbear.netOP
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    4 months ago

    I saw some newly pasted “fuck hamas 🍉” stickers round town and was pissed. Like, seriously? In 2025 there are still idiots who try this shit?

    Anyway, at least they were kind enough to post these near a trash can for easy disposal.