Looking into Apartments - Dutch Style

Added: 2026-05-03

[00:00:07]Hey, how's it going? Welcome back to the channel and today's puzzle. Today we have Well, the reason I picked this one is because there's two rule sets that um I haven't seen in a little while or I haven't just done in a little while. So, I figured it'd be a good uh to get those together. And it's also kind of a riff on one of the rule sets where it's not really the normal rule set. It's a little bit of a a tweak to it. So that said, let's look at this, see what's going on, so we can figure out what the heck it is I'm talking about. It is Dutch Flatmates, eight lines by Flinty.

[00:00:37]So we know there's going to be Dutch flats, which again, haven't done in a long time. And we have eight lines, which are normally 10 lines. It's kind of how the the rule started in terms of what they are, but Flinty here is using eight instead of 10. Obviously, there is some restrictions that eights will cause here that works with this puzzle. So with that said, let's look at these rules. Normal Sudoku. So every row, column, and 3x3 box will contain the digits 1 through nine once each. We've got our Dutch flats. So every five in the grid must have a one directly above it or a nine directly below it. It may have both, but it doesn't need both. So let's say this was a five. We know that one of them on every single row will have one, but let's say it's you. You either have to have a one directly above it or a nine directly below it or both.

[00:01:26]the one directly above and the nine directly below. But you don't have to have it both ways. It could just be one of those two or it could be both. But you do have to have at least one of those two to make it work. And then the other rule here is eight lines. Each lines consists of one or more contiguous group of cells each of which sums to eight. These groups of cells cannot overlap. Digs may repeat on lines and even within sums. So let's look at this line right here. we have to divide it into sections and each of those sections will add to eight. So shush, we can make let's say those two digits add to eight.

[00:02:05]These two digits add to eight and this be an eight. We could have these four digits add to eight and you could be an eight and you could make that work cuz you can repeat digits as long as they don't see each other in normal sudoku or we can do any other groupings of things to make the eight work. There's options here. What you cannot do is have these three add to eight, then those two add to eight, and then those two because those are overlapping. We cannot overlap. They must be each distinct sections on the line. Those are the rules. So, with that said, we're just going to jump in this one. Have some fun. Get it done. Right. Link is going to be in that description below. Let's get some work done here. Let's start to remember how to do Dutch flatmates in eight lines or 10 lines. So, let's get at it. Where are we going to start is the question. Now, the obvious thing is you can never put a nine on an eight line cuz if you put a nine, you can't put a negative one. So, do we have any Yeah, we do. I was going to say, do we have any restrictions on a row or a column where we can only put a nine in one position? Well, the answer is right there. Yes. Now, does that do anything more for us?

[00:03:17]It puts one of them over here, which is nice.

[00:03:21]None of these can be a nine.

[00:03:26]Do we get anything else? Oh, we get an X-wing of nines right here. So, none of those are nines. Oh, the other way to think about it is the second we saw that one of these two had to be a nine.

[00:03:36]Remove this. Where would the nine go in this row? Because it can't go in any of the the eight lines. So, this is a nine.

[00:03:43]means one of you will be.

[00:03:46]And can we go any further with it? Let's see.

[00:03:51]I don't know that we can, but we'll do a quick look here.

[00:04:00]And if we don't see anything else, which I don't, we'll move on. So, let's start thinking about the Dutch flats because there is something interesting about the very top row of a Dutch flat. Well, one of them is going to be a five, right?

[00:04:16]Can't put a one above it cuz there's nothing above it. So, you have to put a nine below it. Well, if this is the nine in that row, you have to put the five above it. Otherwise, you've got a five sitting out in the middle of nowhere that can't be satisfied by those rule sets. So, you are the five.

[00:04:32]And now this five here either says that this is a three and these two add to eight and this is an eight or all three of these add to eight or this would be like a one two pair.

[00:04:44]But can we actually do that? And now that I look at this you can't divide this line up. It has to be both digits adding to 8. So it's either going to be 1 7 or 26. We can't do 53. What happens now if we try to put a one two pair here? We break the d puzzle. So this has to be a 53 with an eight.

[00:05:06]And then from there, let's think about this line.

[00:05:13]Previously, before we knew this was an eight, you could have put an eight here and then two digits adding to eight. You could have put an eight here. Two digits adding to eight. Can't do that anymore.

[00:05:21]So all three of these, cuz there's no other way to divide up a three cell section here in this orientation, would be you have to make all three of them add to eight. There's two ways to do it.

[00:05:31]1 125 1 3 4 Which one can't we use? This one is 1 125. You're not one or two, which means you are not six or seven.

[00:05:40]What are these now? Because they have to be three, not three. Four, six, and I can't type four, six, and seven. And one of these will be a four. I guess we can't rule you out because these could still be two lows here. But we can rule out six or seven from this one. If I put a six or a seven here, well, we don't have to even really think about those, but it helps. We can never pair these two together to make a section that adds to eight cuz the minimum be 10. So, there is a dividing line here. This is getting cut off right there. So, these two have to add to eight and then these three could be broken up in multiple ways to make eight. But the point remains, these two have to add to eight.

[00:06:25]How would you put a six or a seven here?

[00:06:27]You can't cuz you'd have to put a one or a two here. So, this is our four. If that's a four, this also has to be a four to make eight. And you're not four.

[00:06:35]Now, we can divide this thing up cuz this is a six or a seven. You can't make three digits add to eight when you're using a six or a seven when they're in this orientation. Now, if the line did this, you probably could cuz you could do a six, a one, and a one, but that's not the case. So, this has to be a one or a two. You have to just be an eight.

[00:06:56]get a one-two pair. For what worth that is, I don't quite know.

[00:07:02]Um, okay. What about any of these? We know one of these is a four.

[00:07:12]Oh, I'm I'm missing the obvious here.

[00:07:15]Just noticed it. Where on this line can the five go?

[00:07:20]Can't go here. We can't put a one above it or a nine below it.

[00:07:25]So, that's a nogo.

[00:07:28]It could go here or here, though. So, that's I guess I I thought we I was going to be able to put one, but we could still put either of those two.

[00:07:39]Okay, let's uh reink.

[00:07:44]One of these two has to be a five.

[00:07:47]Okay, now that we can do this one can't be a five because this can't be a one and this can't be a nine. So go away.

[00:07:54]You are five. You have to be the one. So you have to be the two and the six. And you have to be the seven.

[00:08:04]Now what does that say about these three? Cuz maybe we're getting onto this line.

[00:08:10]We are Oh, we just know this is a one first off. Sedoku and this is a 47 pair.

[00:08:18]You can't be a seven because this can't be a one. So we'd have to make Seven and one and zero. No go. You are four. You are seven. Now the four cannot add another four like this one could because it they're seeing each other. So this has to extend to at least here. And what's the minimum value here? Can't be one or two. So it has to be a three and it has to be three. So this can be seven. We can add a one. Put it there.

[00:08:45]You are two.

[00:08:48]Now these can't be two. Now we can go into the five. Okay. Took a second. We We found it. You can't be the five cuz we can't put the one above your two or the the uh nine below. So, it's one five.

[00:09:02]What are these? 6 8 and nine.

[00:09:06]And you can't be our nine.

[00:09:09]There's a seven in one of those. There's twos and threes here. I don't like any of that too much.

[00:09:15]Um can we get into more of these?

[00:09:20]I don't think so. Well, yeah, I guess we can a little bit. We can do some restrictions here. We know these add to eight. So, these two have to also add to eight. We can't put an eight and an eight like that. So, we have to combine the two. So, if we can't do a one, it's going to either be 2 six or 35. And you can't be a five. So, you can't be a three.

[00:09:45]But I guess you could still be a five cuz we could put a nine below it. Okay, let's go up to here because I thought I saw something there. Yeah, we we do.

[00:09:54]This can never be divided or this can never stay as three cells cuz the minimum would be one, four, five. So, it has to be divided. If it's a three cell line, it has to have one of them be an eight and the other two add to eight. We can't put the eight here. Can't put the eight in the middle of it. So it goes here which means these two have to add to eight and we can't do two three two or three. So they will be the one seven option. You are the seven you are the one one I said. Thank you. What are these digits? Four five and six.

[00:10:31]Uh similar to what we had down here.

[00:10:33]These two can't pair. So there's going to be a bridge here. So these two have to add to eight. So it's either four 2 or three.

[00:10:43]And then I was going to say this could be either those two and this one or all three of them. But it can't be all three of them because we have a one, two, three staring at this.

[00:10:55]So if this was all three of them, you would be a minimum four. U would be a minimum four. That's already eight. And we've used two fours. No good. So these two have to add to eight. This one is eight.

[00:11:08]Now, that means this one can no longer be the four cuz it has to be these two adding to eight. So, you are two or three.

[00:11:17]Um, one of these is a one. Just noticing one of Oh, this is a seven eight pair.

[00:11:24]I'm just noticing sevens and eights.

[00:11:28]These will be from 2, three, five, and nine.

[00:11:35]One of those being the nine, of course.

[00:11:38]Wrong button yet again. What a surprise.

[00:11:42]One of these will be a four. I'm not liking any of this really at the moment, though.

[00:11:50]Do we have any other restrictions on some of these other lions? Or do we have maybe some sedoku or we need to think about our Dutch flats a little harder?

[00:12:02]We know one of these is the five. It's not you. Again, ones and nines. The one's in the wrong position. So, one of these is the five.

[00:12:14]We know one of those the five, but the one is going to take on whichever one it is.

[00:12:20]What else?

[00:12:28]Do we have anything on the fives we can work with?

[00:12:35]I don't know that we do cuz again you could still be a five with a nine below you.

[00:12:44]So that doesn't seem like it's working.

[00:12:46]All right, let's do some sodoku here.

[00:12:48]One of those is a one.

[00:12:52]No, no, no. One of you is a one because there may be something in here that's just obvious if I put some options in.

[00:13:01]Don't see anything on the twos really, nor the threes.

[00:13:09]Again, we know one of those is a four.

[00:13:12]Eh, don't see anything there. We just looked at the fives. Didn't see anything.

[00:13:19]One of those will be a Okay. Well, this is fours and sixes. I guess we can put those in.

[00:13:26]And we have the seven eight pair. We've got a seven over there. Eh, eights.

[00:13:32]Oh, we just have eights.

[00:13:35]You are eight, which means you're not guess any of those could be still.

[00:13:49]One of these two will be.

[00:13:54]No. What about the nines again?

[00:13:59]Can none of those?

[00:14:03]Okay. Uh, you can't be a six. Just marked over that one.

[00:14:10]Okay. Where the heck is the the next little push?

[00:14:17]Oh, the eight being here now says this can't be the five because the caveat of this being the five was this would have to have been the nine. But now the can't be one above or none below. So you're not five. You are not free. You are a two six pair.

[00:14:33]Okay. What did that do?

[00:14:38]I don't know.

[00:14:43]Feel like we need to get something onto one of these. This one looks like it's just so many options that could be on it, though.

[00:14:49]Unless we just maybe think about the basics of where fives can go in some of these regions because there's probably limitations that if we kind of pick through them we can find maybe possibly could be you could be a f you can't be a Five.

[00:15:22]You can't be a five. So, one of those two will be.

[00:15:28]None of those are.

[00:15:35]I think the Well, you can't be five. I can't put a one above you. And there's a nine's looking at it. You can't be five for the same reason. So, one of those will be Feel like we're getting kind of Let me color this real quick. Feel like we're kind of on the edge of these where the fives could go. You can't be a five again. Ones and nines can't work. You can't be. So, one of these is okay.

[00:16:03]X-wing five. Good. There it is. You are five.

[00:16:07]UR5 means one of those will be put these in and then roll. So the five says you can't be three.

[00:16:21]All right, let's get the yellow out of here cuz I think we've used it. Now let's start thinking about where the nine goes because of the five. You will be nine. You are not nine. So you are hopefully that starts to break open our nines. One of these two will be one of those two will be fives. We probably have more restrictions on some of these fives now.

[00:16:51]See if we can find them.

[00:16:56]Uh you could still be a five cuz you could be a nine. You could be a five cuz you could be a nine. You could be a five cuz you could be a one.

[00:17:05]You could be a five cuz you could be a one.

[00:17:09]You could be a five cuz you could be one or nine. 51. 51.

[00:17:16]Maybe there's not restrictions on fives.

[00:17:19]Maybe there's something more base.

[00:17:24]Again, one of those two. And we know the one has to go with the Okay, this is a one nine pair, isn't it? Oh no, we had a nine looking down here. You're just not a nine. You are the nine.

[00:17:36]And we know that this now can't be five because we can't put the one above or nine below. So you are the five. So that pushes this to be the one. Okay, there it is. So you are six, which means you have to be that two. You have to be a four, which means you have to be a four.

[00:17:53]Good. What are you? You're given three.

[00:17:56]you will be a two six pair which gets rid of the twos from here.

[00:18:01]Get rid of these markings. Don't need them right now.

[00:18:07]And let's see what else we can find now cuz we probably have a bunch of information we can kind of work through.

[00:18:15]One of those two.

[00:18:18]No, we got some threes. We got some fours.

[00:18:25]One of those two will be a three.

[00:18:29]Fours are the key to the day. You are four. You are nine. You are not nine.

[00:18:35]Doesn't tell us what the five is. I should have left that five marking there. But what are you? Three and seven. We can do that one. You're three.

[00:18:42]You're seven.

[00:18:45]That three says nine. Not nine. Again.

[00:18:49]The five could still be in either position because we have a one here and a nine here.

[00:18:54]What are you two six and four? So this is four. Okay. Again, it might just be Sedoku.

[00:19:05]No fours. No fours. One of these is four.

[00:19:10]One of those will be four.

[00:19:14]The five up here says you can't be fives.

[00:19:19]So it's one of those two.

[00:19:26]You can't be a four, can you? Cuz what happens if I put a four here? Now, this has to be five. They can't pair together cuz that would be nine. So, the five has to pair with you. It's a single digit.

[00:19:37]Has to be a three and it can't. You are not four. You are four. You are nine.

[00:19:41]You are the final four. Can we finish our nines as well? I believe we can.

[00:19:47]Yes. Nine.

[00:19:51]This can no longer be a five because of that nine position.

[00:19:57]So we have one of those two and one of those. Okay, let's go back to our sodoku. Now I feel like there's something more like what are you? You are six and sevens.

[00:20:11]Maybe not two. You are six or Oh yeah. Yes, we can. What are you? The seven here points over. So, this is a 68 pair. We're just going to come back over to the two and the six. That'll go up to the six and the two. Come back to the six to the eight. 68. That seven is going to give us that six. Okay, good. What are you surprised we haven't really gotten into this line yet, but you're a three. You are 127.

[00:20:47]You can't be one. You can't be two 492 snow.

[00:20:57]Okay, let's go back to it. Literally, one of those will be our two.

[00:21:06]Feel like we have to be like almost 90% here. Fours are all done, right?

[00:21:13]Fives are just waiting for their last harrah.

[00:21:18]One of these two is a six.

[00:21:23]One of those two is a six. These are two, three, and six. You're not six.

[00:21:32]Let's get rid of the two, three grouping there. What about seven? One of those two is the seven.

[00:21:40]No eights.

[00:21:45]One of those two is an eight.

[00:21:51]Okay.

[00:21:54]So, it's eights and eights. Okay. But nine and nines are done. So, okay.

[00:21:58]There's got to be something on this line we can work with. What is it?

[00:22:03]Or there's a row or a column like this column would be probably the most restrictive. 1 3 5 and 7. You can't be one or seven. You can't be five.

[00:22:18]Can we further restrict these in any way?

[00:22:23]You'd think it would be with the five one pairing, right?

[00:22:28]If you are a five, you have to be one.

[00:22:33]I don't think that tells me anything. If you are a five, you have to be one.

[00:22:39]And if you are the five We wouldn't be able to pair it with the Okay, that won't work. Okay, it was the same situation I think we set up for that, right? We said we couldn't put a we couldn't put a something somewhere because it would force this to be a three. I think I said that. Uh point remains. What happens if you are five?

[00:23:08]We cannot pair it with the three because that would be eight and we'd have to put an eight here as well because those would be their own section. Can't do it.

[00:23:18]Or we come over here and say this is five and it has to pair with the three which it can't do.

[00:23:26]Maybe I just thought that cuz I feel like I I didn't say that out loud. This can't be five is the point which means you are which means you are the five has its nine. The five has to have its one. 7 2 1 You are three. You are one.

[00:23:47]And this is going to start breaking open here. But let's see if we can figure these out. 7 8 What are these? I don't know if I want to dig in that. Do I? Maybe I do. What can these be? Let's just put them in here. Two, six, seven, and eight. You can't be six. You can't be seven or eight.

[00:24:09]You can't be eight.

[00:24:14]So, you're two or seven, huh?

[00:24:18]I guess you can technically be both, couldn't you?

[00:24:24]Cuz if you were seven, you have to be one. Then the five could pair with the one two to make eight. If you're two, that's two, one, five to make eight.

[00:24:37]Oh, wait. That won't work cuz then these couldn't add to eight.

[00:24:42]So, you have to be seven. Let make sure that's right. If you were two, you have to pair with both of those. That would be eight. And there's no way to make these add eight. Yeah, you are seven.

[00:24:54]Okay.

[00:24:56]So that is 7 1 that is 8. So now these three have to add to eight cuz there's no way to separate them. So this is the two which means you have to be the six.

[00:25:06]You have to be the 887.

[00:25:11]That's a 2 three. You can't be a wait 36 says you are two 36.

[00:25:18]You are a given seven. You are three and five. And then what are these two? Two and three. Hey, we got it. Thank you for playing. Did you notice there are eight eight lines? Sure didn't.

[00:25:32]Uh only 130 solves in in about a week.

[00:25:34]That's not too many. Um 1 2 3 4 5 6 7 8.

[00:25:39]Imagine that. There's eight eight lines.

[00:25:42]That would require me to be perceptive to have seen that.

[00:25:47]I never really saw a reason to count to be honest with you. So I didn't. You got me.

[00:25:53]fun puzzle. There was some definitely some uh quirks to this thing about how it seemed very um systematic to start in terms of just thinking about, you know, where the nine could go and then how it created where the nine goes here and then we have to put the five and that kind of sets all this off and then it kind of um got down to where we had to get through some of the options to think about how they could get into it once we got towards the end.

[00:26:22]So, but fun pause. I really enjoyed that one. I did enjoy doing some more Dutch flats because I don't really do them very often. And I do did enjoy the eight lines because I don't think I've ever done eight lines. Uh but the 10 line eight line concept is still kind of same. So anyway, fun puzzle. Hope you all enjoyed it and uh we'll see you next time. Thanks a lot.