The Hardest 16 Piece Puzzle ever made (Jigsaw 16 by Yuu Asaka)

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2 жыл бұрын

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Watch all of my other brain teaser puzzle videos:
A jigsaw puzzle where EVERY PIECE is a CORNER
• A jigsaw puzzle where ...
Solving a LEVEL 10 PUZZLE (The hardest jigsaw puzzle in the world?)
• Solving a LEVEL 10 PUZ...
The Hardest 9-Piece Puzzle in the World
• The Hardest 9-Piece Pu...
Can I solve this 10 piece puzzle? (Oleo 10 Puzzle)
• Can I solve this 10 pi...
This one isn't by You Asaka, but in this video, you can see my sister and I race at the same brainteaser:
Racing my sister at a 9 Piece Puzzle (Who can solve it faster?)
• Racing my sister at a ...
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Watch Chris Ramsay attempt the Jigsaw 16 by Yuu Asaka:
The Surprisingly Difficult Jigsaw Puzzles of Yuu Asaka
• The Surprisingly Diffi...
Chris Ramsey takes on another Yu Asaka puzzle:
Solving The HARDEST JIGSAW PUZZLE!! - LEVEL 10!
• Solving The HARDEST JI...
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Пікірлер: 352

@KarenPuzzles 2 жыл бұрын

What other strategies can you think of? Don't forget to head over to Patreon if you want to watch me solve this puzzle in real time!

@austinbellach1025 2 жыл бұрын

Your strategy was awesome. I heard you talking about it and thought “no way that’s crazy” and then watching you do it I was like “YESSSS 14 fits 14 fits get it!”

@Chaotic_Pixie 2 жыл бұрын

I thought the sudoku approach was genius! I always appreciate a methodical approach to something like this.

@OrigamiMarie 2 жыл бұрын

I liked the sudoku strategy!

@alanar8046 2 жыл бұрын

Karen, can you use a boom stand instead of a tripod for high angles and for top down shots of your worktable?

@jillmartin8255 2 жыл бұрын

Sudoku

@jcortese3300 2 жыл бұрын

Frankly, I think coming up with a 100% trustworthy algorithm is worth a lot more than just throwing stuff at the wall and seeing what stuck. You've probably come up with an algorithm that can be used for quite a few of these kinds of puzzles that guarantees a solution.

@TassieLorenzo 2 жыл бұрын

I think doing it by trial and error is pretty much impossible. Since Karen worked out that on average about six pieces fit in each spot, I think "if we do a little math" there would be about 6^11*5*4*3*2*1=43 billion possibilities. Yikes! Karen came up with a great system.

@MyFictionalChaos 2 жыл бұрын

I think humans innately come up with algorithms to figure out things. I'm not sure how many people would have figured out that, mathematically, it would take a LONG time to just "throw it at the wall and see what sticks." There are methods to puzzle solving that are different than this but i would have made a list, too, because it seems literally impossible (too long for a human to do) if you dont have an algorithm. But of course this is just me and my computer science brain having that intuition

@sehrgut42 2 жыл бұрын

Yep! Enumerating constraints and then testing configurations that satisfy them, starting with those that have the fewest legal placements, is how exact cover problems are solved. Every constraint-satisfaction algorithm I know does basically that, and most of them vary only in how they deal with ambiguity and backtracking.

@codyedgington3897 Жыл бұрын

This algorithm is a variation of wave function collapse, which was only discovered a handful of years ago

@kitlith Жыл бұрын

@@codyedgington3897 for certain computer usecases, maybe? but this type of algorithm has been used for sudoku for ages.

@JulieSchulerVideos 2 жыл бұрын

I NEVER would have thought of approaching this like sudoku! Even if it took longer, that was a genius play!

@iamsam6111 Жыл бұрын

I love sudoku so if the only way I could figure it out is this way, I’d have a lot of fun

@JamieCormier Жыл бұрын

I thought of it immediately. Isn’t that cool how everyone’s brains work differently? We need all kinds of thinkers in the world ☺️

@Sarahr98998 2 жыл бұрын

I honestly don't care about the time at all, I just like watching you solve them. I feel like the time element just adds pressure to something that's supposed to be fun!

@psyckwhoever4197 2 жыл бұрын

A little challenge can be lots of fun, but sometimes it's hard to realize that the fun ended and just became an "addiction to overcome hardships" :/ Be careful Karen. We all love your videos, but we don't want you to suffer for them :D

@PokhrajRoy. 2 жыл бұрын

Karen, after solving the Minions Puzzle: “Whew! That was fun. I want to try something more chill.” The 16 Piece Puzzle: “CHALLENGE ACCEPTED!”

@martihurford 2 жыл бұрын

I love Sudoku. While I’m no where near the level “Cracking the Cryptic” guys are at, I nevertheless enjoy watching these two Brits solve them. Plus, they always acknowledge the puzzle creators which I think is the honorable thing to do. I also found Chris’s channel a few weeks ago and have been binging his videos. I’m now following Mr. Puzzle based on your mentioning him today. Thanks Karen ✨

@psyckwhoever4197 2 жыл бұрын

I like "cracking the cryptic", too! Solving this puzzle with this strategy reminded me a lot of those step by step solutions. I'm happy that I'm not the only one who thought that :D

@schoo9256 Жыл бұрын

Let's get cracking!

@user-himenes Жыл бұрын

I love em, didn't watched for so long

@Jessica_Costantini Жыл бұрын

Some of those puzzle boxes Chris solves are absolutely insane!!!

@VisualMind 2 жыл бұрын

I would've started with the pieces that have the most "outs" since my theory is that they fit in the least spots and then worked towards the pieces with no "outs" ... don't know if that would work but it would be my strategy 😅 ... i would not do it like Sudoku 😁

@sleighaaa 2 жыл бұрын

I was also thinking this!

@brattrox2939 Жыл бұрын

Yeah that's my strategy too lol I would've turned to her strategy if that didn't work out for me

@jurgnobs1308 Жыл бұрын

either that or starting with the holes with the least "outs" essentially, just like in hard sudokus, you start with the things that are the most heavily restricted

@banana9494 Жыл бұрын

I just wanna say that this puzzle is so amazingly creative....whoever came up with it is an evil genius designer.

@TrunksWD 2 жыл бұрын

Solving the puzzle logically similar to a Sudoku is smart thinking. Versus just randomly trying pieces until you get it.

@misshelvedMLIS 2 жыл бұрын

Am I the only one who gets anxiety seeing the timer running while Karen explains something to the camera? I don't wanna be the thing slowing her down. 😋

@KarenPuzzles 2 жыл бұрын

In my first few brainteaser videos, I stopped the timer while talking to the camera and every yelled at me because none of the other solvers on KZfaq do that so it skews the time comparison 😂

@SecretSquirrelFun 2 жыл бұрын

@@KarenPuzzles Personally, and in my humble opinion, I thought that your original timer/timing method was preferable and more accurate - it’s the data collector in me, I just prefer knowing exactly how much time I was actually working - i.e hands on the actual puzzle…or whatever the activity.

@novacorponline 2 жыл бұрын

@@SecretSquirrelFun explaining the thought process you are using actually helps you think through the puzzle, so talking to the camera about what you are trying to do is part of the solving process.

@Curt_Sampson 2 жыл бұрын

@@novacorponline Exactly. This is a well known technique in computer programming, too. When you start running into trouble and can't figure out what's not fitting together in your program, you haul out a rubber duck and explain your problem to it, and you and the duck together will often come to a solution. This is called "Rubber Duck Debugging." (Yes, really! Look it up on Wikipedia!)

@ysucae Жыл бұрын

@@Curt_Sampson i'm sorry this is the greatest thing i have ever heard. i will have some rubber ducks for my programmer friends soon

@margretsnae 2 жыл бұрын

I was just thinking that I would label the pieces and write down where they could fit, and then you did it! Love your brainteaser videos.

@lemmingyellow3888 Жыл бұрын

Oh my goodness. That last reveal by Editing Karen was heartbreaking!! It's so easy to second guess yourself on these. I think you did a great job. The Sudoku strategy was brilliant.

@TheZotmeister 2 жыл бұрын

Nice work - not only did you solve the puzzle, but the *way* you solved it like a _Sudoku_ means that you proved the solution is unique! It's not unlike the methods I've had to use in making puzzles for the USPC. Very impressive!

@WylliamJudd 2 жыл бұрын

One strategy I would have tried would be to place the pieces with the most out-prongs first progressing down to the least prongs. Not sure that would have worked, but it would be something to try that might not be as time consuming.

@PuzzlingBees 2 жыл бұрын

Sudoku! Ah man it took you 15 minutes to figure out how to solve it, and it took me almost 2 hours to get there. This was my first Yuu Asaka puzzle so I think I was looking for a 'trick'. I actually said to my partner 'his puzzles are supposed to have a trick but I'm starting to think it might just be brute force!' I ended up trying each piece. If it fit in more than 1 spot, it was put aside, once I got through all the pieces, I think there were two or three that fit, and I just kept doing that until I got them all! In the end it only took me 30 minutes to solve it that way, plus the 2 hours of faffing about beforehand.

@yokonamigaara 2 жыл бұрын

Chris ended up also figuring out that certain pieces can only fit in one spot and was able to solve from there, so you kinda had the same strategy!

@E5va 2 жыл бұрын

as a sudoku person, i really like the strategy you came up with haha. so satisfying! you doing your yuu asaka puzzles is my favourite, cant wait for the next one!

@cori2356 2 жыл бұрын

I totally thought that a Sudoku strategy would work when you first started, so when you decided to try it I was excited!

@Laserstormelpies 2 жыл бұрын

I looove the way you solved this. I love brute-forcing with things like these, not because I'm not good at logic but rather doing the brute-force in an intelligent way of logic. I think I wouldn't have gotten such a clean idea as yours is why that video has been a literal upgrade to my puzzle-solving-ideas-repertoire.

@barbara7452 2 жыл бұрын

the grid solution method was pretty satisfying, even if it may have taken longer

@MarielaDavina 2 жыл бұрын

I enjoy Sudoku but I don't think I have the patience required for this type of puzzle....great video though! Happy to watch Karen solve it :-D

@eluspets Жыл бұрын

First time seeing a Yuu puzzle. Never would have thought that a 16 piece puzzle could actually be challenging. The fact that pieces should actually fit where they don't was mind blowing in itself.

@kellster2193 2 жыл бұрын

Honestly, to tell you the truth Karen. I think you honestly had the smartest way of solving it. I think I would have given up. Great job solving it in the end.

@sweetea3272 2 жыл бұрын

I love this!! Congrats on solving it! I’m going to watch the other ones you’ve done of his. He seems to have an incredible sense of humor to be making puzzles like these.

@petrescuework-difficultcas6581 2 жыл бұрын

Love your methodical approach! That way it looks way easier than the puzzles where you have to free form where the pieces go.

@vaniaguillen9718 2 жыл бұрын

I love doing sudoku puzzles. I can't say I would have thought about treating this puzzle in this way but it was such a brilliant idea.

@alchemyqueen2764 2 жыл бұрын

What a crazy puzzle!! Glad the Sudoku method worked in the end. Can't wait for more!!

@DonYagamoth 2 жыл бұрын

Neat, I like your approach a lot for how you solved this puzzle. Instead of giving up, you found a concept that worked, I highly respect that

@danniellebrown8996 2 жыл бұрын

You are so incredibly patient and clever. I’ve been impatient my whole life, and your videos have helped me a great deal. Thank you

@Chipayon 2 жыл бұрын

I think I would use the same strategy, maybe with excel and run some macro so I don’t accidentally cross off my work (paper sudoku can get super messy for me 😭 ink everywhere)

@SecretSquirrelFun 2 жыл бұрын

That’s totally taking it to the next level 😀 I like the idea of running a macro 👍 Respect. 🙂🐿

@celloafterdark4173 Жыл бұрын

I wonder if you were able to put it together in a square if that might be the correct order for the pieces in the tray? Loved the video!

@ashlitchi Жыл бұрын

Love that you used one puzzle methodology to solve another puzzle!! So cool

@PretzelBS 2 жыл бұрын

I immediately thought of making a giant 16x16 matrix and filling in the square of it fit, super happy that you ended up using a similar method!

@mariana6557 2 жыл бұрын

That was genious! Congrats Karen, amazingly done

@SmartHobbies 2 жыл бұрын

Oh wow. I didn’t realize that the pieces didn’t match the shape exactly until you started. Quite the challenge. I loved the Sudoku shout out as well:)

@pvic6959 2 жыл бұрын

hahah wellll, if it _did_ fit exactly, then it becomes that game for 2 year olds of fitting the right peg in the right hole LOL

@Alicenwndrlnd Жыл бұрын

I just want to compliment on your smart thinking, it was great to watch and hear how your thoughts are working out as you come up with solution!

@PokhrajRoy. 2 жыл бұрын

This is such a lovely brain teaser. The acrylic pieces look awesome 👏🏽

@fakjbf3129 Жыл бұрын

I’m a big fan of the channel Cracking the Cryptic which does a lot of variant rule sudoku puzzles, so writing down all the possible solutions was my first guess on how to proceed. Now I really want to see Simon or Mark have a go at solving this, I think they would either instantly see that same solution or they’d be stuck staring at it for hours.

@TheloniousCube 2 ай бұрын

A valiant effort! The lack of a true "aha!" moment is a considerable defect in this one for me

@maisonneuve 22 күн бұрын

This is amazing Karen. I just do not have the patience for something like this. I’d need to be stuck in a room for days before I wanted to keep going. lol. Good for you!!!

@joneskamikaze6228 2 жыл бұрын

Nice to see you doing logic puzzles, +1 for mentioning chris, you found a clever solving strategy! i enjoyed watching your thought process!

@rbontrup 2 жыл бұрын

Your Sudoku strategy was brilliant.

@etherealalienn Жыл бұрын

the fact that i was imagining writing it out like a sudoku and then you actually did it!!!!!! so satisfying!

@metallsnubben 2 жыл бұрын

I think my strategy (starting out) would be a similar "sudoku checklist" but not exhaustive of where every piece can fit but assuming "nothing goes where it looks like it should" and split the pieces/spaces into categories that way

@LockPickingCuber 2 жыл бұрын

I love it! I sometimes find these kinds of puzzles frustrating, as they tend to involve more luck and persistence than logic, but this was truly a logic puzzle, like a sudoku, as you said! Great video! I was particularly impressed by the patient way you dealt with the setback towards the end, needing to redraw your chart... [Edited to add the code-word in!]

@elitettelbach4247 2 жыл бұрын

The sudoku strategy was very clever! If you had realized that from the beginning your time would’ve been much quicker, since you were almost a half hour into it before you switched to that method.

@cmulliner8985 2 жыл бұрын

As a huge fan of the sudoku channel cracking the cryptic, this was a lot of fun to watch!

@piplup10203854 2 жыл бұрын

I love Sudoku! I got my dad into it and we enjoy comparing times with puzzles and sharing strategies and all that :D

@chibinecco1981 Жыл бұрын

I am SO glad that the method you ended up using to find the answer is EXACTLY what I wanted to do from the start XD

@keladry12 2 жыл бұрын

This was a great puzzle solution and I object to you calling it a "brute force" solution. You 100% had a strategy and thought behind what you were doing, and I would argue that a brute force for this puzzle would be testing every single piece, position AND ORDER, whereas you just did the first two parts and used logic to determine the order. Nice sudoku application.

@commoncomplication Жыл бұрын

I don’t like puzzles. But I can’t stop watching these videos.

@BrittaStokes 2 жыл бұрын

Clever approach! Makes me want to try this puzzle now. Sudoku!

@pacman52280 2 жыл бұрын

I would use the same strategy you did, but without the chart. Also, I would love to see you solve a sudoku puzzle on here. You could compare yourself to Simon and Mark from Cracking the Cryptic.

@KarenPuzzles 2 жыл бұрын

I'm decent but not great at sudokus, so I don't know if that would be very interesting!

@pacman52280 2 жыл бұрын

@@KarenPuzzles, when I first introduced sudoku puzzles to my dad, he called it a jigsaw puzzle with numbers. If you think of it that way, you might get better at solving them.

@pvic6959 2 жыл бұрын

@@KarenPuzzles Karen, that's where you're wrong. We (or I, at least) come here for _you_ and your personality, vibe, whatever you want to call it. You could literally sit there and talk while painting a wall and I'd watch/listen. Your videos are a cozy place in a chaotic, difficult world. Thank you for everything you do!

@benjamin9901 2 жыл бұрын

Very cool puzzle! You sent me down a rabbit hole of Yuu Asaka puzzles

@KarenPuzzles 2 жыл бұрын

He designs good ones!

@pattiwicksteed3731 Жыл бұрын

Thank you for the Sudoku parallel. I've done 12 and 16 box sudoku and literally that is my strategy. Boy do they take time!

@DanaCook60 2 жыл бұрын

Loved this video! Using sudoku to solve was definitely a wise strategy. ❤️

@bunpeishiratori5849 2 жыл бұрын

You are such a kind soul, Karen. It is a pleasure to watch your videos. Sudoku!

@alelicgd 2 жыл бұрын

I love these sundays mornings puzzle videos

@MelanaC Жыл бұрын

I love sudoku so I thought your strategy was very clever! That seemed like a really hard frustrating puzzle but you powered through! Love your channel 🏴󠁧󠁢󠁳󠁣󠁴󠁿🧩🌟💜

@johnjwedrall4290 2 жыл бұрын

Karen you always meet the challenge and I'm liking your upbeat personality 👍😎

@rishibeauty8889 2 жыл бұрын

Sudoku Strategy! The long way, but the tried & true way. Can’t wait for your next video!

@Boxofcare666 2 жыл бұрын

As you were trying the pieces before sudoku, i was waiting for you to pick up the second in the top row, the piece you put down and never really picked up, i think if you tried to move it to other spots, you might have been able to solve it quicker without the sudoku approach

@bluetealturquoise 2 жыл бұрын

6:40 That was EXACTLY what I was thinking! I was like: “she should get some paper, number it, tape it on, get another paper and draw a box with more boxes on the inside that is 4x4 to represent the puzzle piece spots, then go from there.

@davidpersson4927 Жыл бұрын

About completing the 4x4 puzzle. I did a quick calculation on the number of holes and extrusions on the pieces and they match up so it can't be ruled out that it does work. The same goes for the number of edge, center and corner pieces.

@Vickymakesandbuilds 2 жыл бұрын

It was clever to use the Su Doku strategy, I never would have thought of it, this looked fun 😃

@FOJO27 Жыл бұрын

Sudoku 🀄 Really cool to see your strategies when puzzle solving. Another enjoyable video 👏

@Thylonicus 2 жыл бұрын

Ramsay and Mister Puzzle might have done the puzzle in less time, but your video was the better one. You displayed a methodical, logical approach, and when you thought you'd made a mistake, you approached that mistake logically as well. The only real flaw was that you doubted yourself, which is a shame. You're much more intelligent than you seem to give yourself credit for. The only real mistake--not flipping the number-six piece around--was a simple error in perception that anyone would have made. I think your "Sudoku" strategy was quite good, and demonstrated well enough to, again, make your video the better one.

@HarryJSmith 2 жыл бұрын

I’m never really that good at sudoku, but you did a great job at this puzzle!

@jackappleton2795 2 жыл бұрын

Doing it like a Sudoku is a good idea. I'd try every piece in every spot as well just to make sure I didn't mess anything up.

@AznRUs 2 жыл бұрын

When you first said sudoku I was super confused but It was so satisfying seeing you solve the puzzle so mathematically.

@josephbrenz5394 2 жыл бұрын

I'm just starting to watch the video and this is the first post since I subscribed I'm excited

@KarenPuzzles 2 жыл бұрын

Welcome! I'm glad you're here!

@NinaThoren Жыл бұрын

Seen a couple of your videos and these puzzles seem like such a brain tease! I would have started with the pieces with the most prongs and tested each hole for each piece so if I would need to switch I know which ones that can't fit anywhere else, almost like the sudoko method you came up with

@smarterthanawaffle 2 жыл бұрын

That was so much fun. Thank you.

@thesolarfutureenthusiast1102 Жыл бұрын

The picture on the box looks like it would go together as a 16 piece puzzle. The 3 piece joining to the 7 piece. Then the top piece in the puzzle tray joins on to the 3 piece followed by the corner, then the bottom piece in the tray followed by the edge piece on the table. The 3rd piece in the tray joins to the 3 piece to make it a square and finally the central piece from the table slots in. Hard to be sure that it works but all the prongs are the correct direction and look right.

@JudithARobinson 2 жыл бұрын

Oooh, this was so frustrating to watch!!! Well done on completing it! It would be interesting to know how long it took once you'd come up with this strategy, as it would be much closer to the target. I love how you worked it out in the end, as I love logic puzzles. That said, it's only within the last year that I have finally managed to complete a sudoku!!! Somehow, for years, my brain just couldn't get to grips with them.

@theadamabrams 2 жыл бұрын

5:00 You said here that probably no piece will go into a slot that's the same general shape, but then you kept your very first piece (2:56) in its same-looking spot for a really long time 🤪

@juliabollin4435 2 жыл бұрын

Hi! I just wondered if you have already looked into the "Wasgij Puzzles" (Jumbo). You never puzzle the image on the box but an event in the future or from another perspective. The quality of the pieces is pretty good and larger sections can be moved around easily. ;-).

@KarenPuzzles 2 жыл бұрын

I love those puzzles! I've been meaning to cover them on my channel for years and just haven't gotten to it yet.

@juliabollin4435 2 жыл бұрын

@@lazyhomebody1356 Thats's unfortunate. :-/ They are pretty affordable in Europe and often cost less than the ones from Ravensburger. I got most of mine on sale for about 10-12€.

@DusanPavlicek78 2 жыл бұрын

That's a smart way of solving it 😀👍

@captdaf Жыл бұрын

Sudoku was a good idea. Starting with the pieces with more outs (which one could expect to fit into fewer spots) would also help.

@PepeHerreraH 2 жыл бұрын

Love the Sudoku strategy!

@ladymonstergirl Жыл бұрын

I don't know how I happened upon your channel but I love the vibe.

@programaths Жыл бұрын

About fourteen years ago, our English teacher gave us a fill in the blank like that. Nobody was able to solve it, because almost every words did fit in every blanks, but one. So, it was very easy to fill in most of the blanks, then you were stuck with one or two words not really fitting. It was quite a crazy thing. Almost 300 people complained about the test and that did include people for whom the teacher was puzzled by their presence. In the end, she simply dropped that part and apologized. It was indeed a though challenge even for natives. Certainly fun, but not during an exam! It was so shocking that I don't even remember the other questions, just that they were way easier.

@Niki1A_ 2 жыл бұрын

To make sure you don't miss any possible way a piece could fit, you could simply routinely try all 8 possible positions (4 directons one way up, 4 the other way up). That is probably even faster than randomly trying different ways because you never repeat any possible orientation.

@gogonsrimulat6971 2 жыл бұрын

its ok karen, the longer you solve the puzzle the longer the video ❤️

@AuntGrace 2 жыл бұрын

💕love the post it note technique.

@markdukeshire4812 22 күн бұрын

brilliant design!

@purple4395 Жыл бұрын

I would really love to see you do some sudokus. Not the lame standard ones, but some with a few additional rules to make cooler thought patterns

@CiszHelion 2 жыл бұрын

Great job, very satisfying to watch. :D

@glendapeterson2537 2 жыл бұрын

Hi Karen great video, I don’t have the patience for this type of puzzles. Sudoku!

@fancydeer 2 жыл бұрын

the sudoku approach was great.

@chiaramoffa8506 2 жыл бұрын

I've really liked your logic approach to the problem, definitely more interesting than watching you rearranging the pieces for 20 minutes until they fit!!

@grumpyparsnip Жыл бұрын

This reminds me of my own strategies to solve puzzle, including the moment of despair when you come to a contradiction in the middle of following the logic.

@collectivelight 2 жыл бұрын

Good puzzle! That was very tricky.

@lyllies1130 2 жыл бұрын

I stopped the video and screenshot your little card and I did it with you. so much fun.

@PotatoRed148 Жыл бұрын

Sorry Karen but we love to see you struggle and suffer on this kind of puzzle. But seeing you complete it gives me so much joy

@rideka Жыл бұрын

this version of puzzle mix with sudoku is very interesting

@Psuemno 2 жыл бұрын

A friend of mine got me this puzzle, and just two days later your video shows up in my recommendations. What a coincidence! After you brought it up, I decided to attempt the "assemble it like a normal puzzle" idea that you mentioned, and it actually is possible. I'd share an image but apparently you can't do that in a youtube comment. Assuming I didn't mess up the numbers, if you go back to your number system for the pieces the solution is: 16, 9, 11, 15 7, 2, 4, 10 12, 3, 1, 6 13, 5, 8, 14

@minion7342 2 жыл бұрын

I'm so tempted to get this sudoku myself!!

@gailshaughnessey8914 2 жыл бұрын

Sudoku - Loved your strategy - whatever works is good.

@landsgevaer 2 жыл бұрын

With these puzzles I always like it if you can not only solve the puzzle, but also prove the solution to be unique. This systematic SUDOKU approach allows just that (mistakes excluded), although I would have drawn a 16x16 grid; however, trial and error until you find a solution doesn't. That is well worth the extra half hour!