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Classic Sudoku: Bonus Puzzle 4: [This is STUNNING]
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Күн бұрынYou can try Dean Mayer's superb classic sudoku here:
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Hi! We're Simon Anthony and Mark Goodliffe, two of the UK's most enthusiastic puzzle solvers. We have both represented the UK at the World Sudoku Championships and the World Puzzle Championships. We're also "cryptic crossword" aficionados. Mark is the twelve-time winner of The Times championship and Simon is the former record holder for most consecutive correct solutions to The Listener crossword. We hope we can help your puzzle solving while also introducing you to some of the world's best puzzles.
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@DeanoMayerWreckfest 4 жыл бұрын
Many thanks for posting this Anthony, glad you all enjoyed it. I should clarify that, while hand-made, it's with software assistance, that software evaluating the grid during the seeding process and identifying the solving steps.
@tadperry1817 4 жыл бұрын
I'd love to see more puzzles made in the same way if the result can be so impressive. Feel free to make more along these lines. I really loved it. There were many cases of cells that could be a given pair and evidence that the cell contained the digit that it couldn't be if you missed something subtle like the 78 pair in column 7, or 478 triple in the top left box to place the 6 in r2c4. Without placing that 6 properly, the top center box was impossible to break into by my normal approach.
@DeanoMayerWreckfest 4 жыл бұрын
@@tadperry1817 I rummaged around and found another nice one (they're a bit rare tbh) and sent to Simon.
@susanne5803 3 жыл бұрын
That's basically the real meaning of AI: "Assisted Intelligence" 😁
@alexanderstelmakh8906 Жыл бұрын
Deano, what is the intended solve path? I used xy-ring to proceed …
@jamba_d2225 4 жыл бұрын
The best part of each video is when Simon realizes he's solved it and starts smiling....
@bluefloyd1 4 жыл бұрын
I prefer that smile at 3:20 when he realises it's "thinking caps on" - a proper puzzle!
@fionadavid5649 3 жыл бұрын
Yasssss I love the part when Simon realizes he solved and starts smiling
@PuzzleQodec 4 жыл бұрын
My break-in was _completely_ different! The 4 cells shared by column 1, column 9, row 3 and row 5 contain a 59, 19, 89 and 18, which act as a kind of quadruple x-wing: column 1 can only have a 5 in those cells, column 9 only a 8, row 3 only a 9, and row 5 only a 1.
@JaggerG 3 жыл бұрын
Samesies! I still needed the other stuff he found, though. Felt like a red herring in retrospect.
@goonjanmall 3 жыл бұрын
Bifurcate here - and GG puzzle :P
@jurjenvanderhoek316 2 жыл бұрын
Same here, but it brought me nowhere :-)
@samwilliams7975 4 жыл бұрын
27:49 for me, this is the first time I've ever spotted x-wings unassisted, so your channel must be doing wonders for me!
@hippophile 6 ай бұрын
I spotted one of them (the 2s), and almost the 3s... almost...
@za356 3 жыл бұрын
My thought process when i solve sudoku is still too mechanical compared to this guy. I don't think i would have been able to find the x wings without filling the whole grid with all the possibilities. It's incredible how easy it is for him to spot these patterns.
@ezraguerrero2879 4 жыл бұрын
He could've resolved the last 23 pair in an easier way, but then again, I couldn't have solved this. Great job!
@benconlon875 4 жыл бұрын
you know it’s a good puzzle when he forgets how to do simple sudoku
@timpt 4 жыл бұрын
When he said “I’m so stupid,” I was sure it was because he spotted the 2 that could go in box 3, but then he went for another x wing.
@ericfox7021 4 жыл бұрын
I almost immediately found an X-wing on 7s in rows 3 and 7 after placing a 7 in r5c6, but it doesn’t advance the solve much until later. I liked your solving path better!
@ricksleurink5064 4 жыл бұрын
Yes me too :)
@hariman7727 3 жыл бұрын
...I didn't realize that pattern of 7s was a pair of x-wings, but I did realize that the 7s couldn't go into certain squares that got the same result.
@RandomBurfness 4 жыл бұрын
I think I'm going to save this one until tomorrow. If Simon says a classic sudoku is stunning, I need a fully rested brain to be able to solve it and that's not happening when it's past midnight.
@adrianl4508 4 жыл бұрын
Sending my regards from across the pond in Denver, Colorado! Stumbled across the channel not too long ago and have been so grateful. Thank you both again!
@lemlem35 4 жыл бұрын
I recently bought all 3 of your apps and I've never enjoyed a sudoku app more, they're absolutely lovely
@lrvogt1257 Жыл бұрын
After a few bad starts I watched your solution. Afterwards I tried again and after filling in the obvious marks I worked the perimeter and looked throughout for rows where only 2 of a digit lived. I also found X-wings for 1 & 7. Going at it this way made the puzzle much easier to solve.
@SmartHobbies 2 жыл бұрын
I love seeing the classic sudoku’s. This was a clever design showcasing X-Wings.
@Aotearoajin 3 жыл бұрын
Solved in 56:52, first time solving a puzzle from your channel without having to watch the video when I get stuck. First time using X-wings, Thank you so much for all the content, these videos are awesome.
@lakarto19 4 жыл бұрын
Managed to solve in 08:35 // Another reminder, I think, that it's a good idea to actively look for X-wings and Swordfishes in these type of 'symmetric' sudokus. Thank you once more for the bonus content! Looking forward to more.
@anne7811 3 жыл бұрын
I did the most filled rows and colums first, so started with the edges. That gave me a good start and it was done in 23 min.
@millahyvarinen9121 3 жыл бұрын
I love the classic sudokus on this channel! The ones I've tried have been very fluently solved but still somewhat challenging. I got bored of classic sudokus few years ago but finding your channel has really made me enjoy them again!
@sunriselg 4 жыл бұрын
I found two X-wings, but couldn't solve it. Edit: Missed the third X-wing. Then I didn't see the hidden pair (or open complementary open triple and hidden single). Eventually I solved it by finding a jellyfish.
@lefandeluimeme 4 жыл бұрын
Solved in 1h11, I must admit it was REALLY challenging
@michaelbaker9347 4 жыл бұрын
More puzzles by Dean Mayer please. this was very beautiful to watch unfold
@Bridging_Roni 2 жыл бұрын
I think the easier way to spot the first 23 pair is from the geometry. c3r3, c7r3, c7,r7 must go to the three of the four empty spots c1r5, c9r5, c5r1, c5r9. the location of 23 in r5 further constraints to a 23 pair in c5 alone. That means 1 must go to c1/9r5.
@greglee1663 4 ай бұрын
Loved this puzzle. Thanks Simon.
@Grimba86 5 ай бұрын
Hey I cracked through this one, but boy it took a lot of effort. This was a really great puzzle and only gradually step by step revealed its secrets.
@SadisticSenpai61 4 жыл бұрын
I spotted the 3 x-wings before Simon, so I'm rather proud of that. Once the 478 triple forced a 6 into the middle top square, it kinda just unraveled from there. Great puzzle! I think I'm getting better at these.
@Coyotek4 4 жыл бұрын
I found something in addition to the X-wings shown in the video: in rows 3 & 5 and columns 1 & 9, you can reduce the four intersections (r3c1, etc) to the same 4 digits: {1, 5, 8, 9}, in ways that restrict those digits; I used that to place a 9 in r2c4 (since there had to be a 9 btw r2c1 and r2c9), and using the additional fact that r2c6 had to be a 2 or 3 (found after the X-wings) and the fact that 5 could not be at r2c5, I restricted the 5 in the top-center box to row 3 and used that to get the four numbers at r3c1, r3c9, r5c1, and r5c9. After that (and with the X-wings), the rest was relatively straightforward. (Of course, I only got all that AFTER erring and starting over!)
@riluna3695 4 жыл бұрын
I found the same logic and even resolved it with the same trick with the 5. I was actually unhappy that Simon missed it in his solve, because more than anything else, I wanted to know what that kind of logic is called. It isn't a quadruple despite having four numbers. It behaves somewhere between pairs and X-wings without being either one. What's the official term for this pattern?
@ericcrowell9493 4 жыл бұрын
@@riluna3695 I found this pattern as well. I wasn't able to resolve it, though I was able to use it to resolve the 9's in box 2 r4c2&3. It was my getting hung up on this pattern that caused me to miss the hidden triple that Simon spotted and caused me to take over an hour to solve the puzzle. There's a guy on youtube here called Sudoku Swami and he claims the pattern supposedly and calls it the "Swami Quad Loop". kzfaq.info/get/bejne/jN-ih7Vh3Zy8lJs.html
@riluna3695 4 жыл бұрын
@@ericcrowell9493 Ooh, fascinating! Thank you for sharing that. A "quad loop" definitely makes sense as a name, and if he was the first to "claim" it, then props to him.
@yiotatort 4 жыл бұрын
Ah man, I used that to solve it too and had never seen it before. I was hunting around for hidden triples and decided to see what would happen if I played with those. I was so excited to see that it worked. I really wanted to see how Simon would react.
@PuzzleQodec 4 жыл бұрын
That is exactly how I started the puzzle. I was a little disappointed somehow that Simon did a completely different solve. But hey, that was pretty too.
@grenvillephillips6998 4 жыл бұрын
Fabulous handmade puzzle. The best clue at the start was Simon knowing that he was looking for x-wings. That's experience for you!
@ThatGuy-dj3qr 4 жыл бұрын
Wow! What a monster. So many things you have to spot, just to get started on this puzzle. Thanks Simon!
@BlueCyann 4 жыл бұрын
8:58 "Oh, I'm so stupid, so stupid." No, no you are not. That might be the first time I've ever found a puzzle entry faster than you, so allow me my pride! Honestly I'm amazed I was able to solve that. Something is finally sticking. Total time just under 40 minutes, as usual the hidden triple was a big problem, but I found it!
@azeez3554 4 жыл бұрын
eric vosselmans he found the the x wings faster. not solved it
@andrewbieny4564 4 жыл бұрын
@eric vosselmans no he meant at that time of THIS video where simon says he is stupid. He is saying, "simon, don't say you are stupid as that implies you are saying that was an easy move to spot and I am very proud that I spotted this move. Dont take that away from me."
@georgesthibaudeau1533 3 жыл бұрын
I never saw the X Wings. I quickly established that the 5s in row 1 were restricted to box 1. This immediately gave me two symetric tripples in boxes 1 (4-7-8) and 3 (5-6-7). From there, it was relatively clear sailing to the final solution. It was a fun puzzle with, as I now realize, two entirely different manners of reaching a successful solution.
@UofMFan628 4 жыл бұрын
47:15 found the 478 triple right away as well as the 2 and 3 x wings then took forever to see that 78 pair that started the cascade
@nickangulo2396 4 жыл бұрын
I had the exact same issue. I gave in and watched the clip, smacked my head, and the puzzle crumbled from there.
@austincellar 3 жыл бұрын
At 15:00 Simon identifies the 478 triple. I have a question as to how he could then confirm the 6 in row two when one of the squares he highlights as 478 triple in that row does not contain a 4 ?
@jeffbrunton3291 4 жыл бұрын
key for me was seeing the top left triple/quad, just luckky to see the 478s interacting
@susanquig7245 4 жыл бұрын
Thank you for the extra classic Sudoku. I have loved them all.
@DevilishlyDutch 4 жыл бұрын
Needed TONS of help with this one, but! I spotted that 478 triple myself in the first box, I just... didn't spot the triple that later caused in row 2. But hey, I spotted a triple, that's progress!
@philipcoltharp918 4 жыл бұрын
Bifurcated, but not until I found the three x-wings, and I'm ok with that. (Thanks again, stay healthy everyone)
@lauramcastro4897 4 жыл бұрын
I spotted the 478 pair, but only after I had painstakingly spotted an X wing with 7s in R3 and 47. So by the time I got there I'd actually found a quadruple instead of a triple! 48 - 47 - 46 - 78 Still cracked the puzzle for me, but wow, took me much longer to get there!!!
@tadperry1817 4 жыл бұрын
This amazing puzzle gave me huge fits. I've gotten a lot better at sudoku puzzles, BUT there must be *something* basic about the proper logic to solving them that I just don't seem to understand yet. I say that because I kept going down logical paths that appeared okay only to keep seeing two same digit trying to go into the same row or column. I'm trying to figure out what I still don't know, but I still haven't figured that out. This puzzle is truly amazing and a learning experience.
@jeffbrunton3291 4 жыл бұрын
i think this is favourite puzzle of all time, will keep trying it in different ways and hopefully getting better at it, its pretty deep
@richardfarrer5616 4 жыл бұрын
Got the 478 triple. Got the Xwing on 2s. Failed to spot the X-wing on 3s or the 78 pair in column 7. Superb puzzle though.
@khayman9574 4 жыл бұрын
Absolutely beautiful, thank you. At some point, I also spotted a swordfish on 4s which you didn't but, eventually, the result was the same. Again, thank you for the upload. Keep 'em coming, please.
@nothingnothing3211 2 жыл бұрын
Man! I'm so happy I solved it too. To be honest I tried it after watching this video and used the knowledge of 2/3 x-wing but I couldn't reduction of 478 triplet but after trying to find logic for I found another logic and eventually solved the puzzle.
@QwillinAllTheFish 4 жыл бұрын
28:32 for me, proud of myself for spotting a few advanced techniques like the double X-wing and the interesting quadruple in r3c1, r3c9, r5c1, r5c9. I'm interested in what that pattern is called because I haven't seen it before Edit: Just watched the video, I never found the 478 triple so our solves were way different, interesting to see this great puzzle done a different way
@Aotearoajin 3 жыл бұрын
I found the same quadruple as you, definitely the highlight of the puzzle for me. Was disappointed that we didn't get to see Simon react to it
@tonyvanderpeet5683 4 жыл бұрын
16:22 Only found 1 x-wing, but decided to pencil mark groups of 2 and 3 in a box which actually helped with finding triples. Now to see Simon's solve...
@SomsOxbow 4 жыл бұрын
44:22 solve time for me. I had to watch the video here and there for help but I got it. Without the video I'd have been beyond stuck. I'm still starting to learn all these more advanced patterns.
@micheltordoir7734 4 жыл бұрын
3 X-wings (7, 2 and 3), 3 triples, a few pairs... And finally I had it! Great puzzle.
@keithmockridge3329 2 жыл бұрын
Well Simon , all i can say is BOBBINS. In C Am F and G. As you know, with these 4 incredible chords, you can actually play hundreds of songs songs.🎻🎺🥁🎹🎹🎸🎸🎸🎷🎶🎵🎼📯🔔
@johnmcadon4248 3 жыл бұрын
As you recently observed, after 7 in E6 it was obvious that a 7 could not be in any of the 16 corner cells ABHI1289. Because there was no 7 possible in the cells neighboring the central 3-by-3 square.
@JensJarke 4 ай бұрын
C1R7 + C9R7 is a 239 only and rules out the 9. Then with the 8 in C4R8 we get a 23 pair in C5R9 + C6R8 which makes a 46 pair in C4R7 + C6R7. Slightly different approach.
@driverdave8156 4 жыл бұрын
18:29 Works for me. Since, at first glance, I didn't even think I'd be able to do it.
@lado809 4 жыл бұрын
I tried before watching the video. It took nearly an hour. I watched the video until 3.55 and was happy I didnt miss anything simple. Hoping to see if the xw7 is explained, as I really felt like I winged it.
@lado809 4 жыл бұрын
Amazing, just went to completely different ones. Learning all the time
@BryanLeeWilliams 4 жыл бұрын
Too hard for me, but thanks for doing extra puzzles. I enjoy watching the solves.
@grzegorzadamski1604 4 жыл бұрын
45:42 oh god the amount i thinking i did was wow, there were like 4 x wings. i'm so proud of myself
@hariman7727 3 жыл бұрын
Technically 5, because there were TWO x-wings on 7.
@jorgkuijt4735 4 жыл бұрын
World is in dire peiil! We need geniusses to save us all!! Crackling his Knuckles...right...but I need to solve this Sudoku first.... Stay save you all!
@whocareswho 4 жыл бұрын
There is an interesting quadruple in r3 c1&9 and r5 c1&9 as well. It didn't break open the puzzle for me but it being there right at the start did help me later on.
@ChumX100 3 жыл бұрын
I managed to solve this one using SET, although I had to restart a couple times. Wonderful puzzle!
@batdowg 4 жыл бұрын
Anyone else find the two X-wings on 7? Actually really want Simon to redo and look for X-wings instead of pushing so hard on only the 2 and 3 xwings
@LeCrenn 4 жыл бұрын
Yes, but it didn't lead me anywhere. Spent far too long on the sevens.
@DNXTMaster 4 жыл бұрын
yeah, those were some massive red herrings
@hariman7727 3 жыл бұрын
They help later in the puzzle, but only offer a little early on. I actually got 12 pairs in the top boxes off those x-wings too.
@04LightningFan 4 жыл бұрын
Question: I noticed a pattern I thought was interesting, The four cells in Rows 3 & 5, Columns 1 & 9, were limited to 1589 in pairs. This pattern restricted 5's in C1, 8's in C9, 9's R3, and 1's in R5. These restrictions got me to wondering. Does this pattern have a name?
@StephanSpelde 4 жыл бұрын
Yes I also came across this and it was stunning! Haven't seen or heard of it before. Too bad Simon solved one of the corners early with his 78 trick. I was really hoping to see his reaction and explanation when he found it. Anyhow, if it doesn't have a name, I suggest quadruple X-wing.
@user-dm1sz4jv7t 4 жыл бұрын
it is called XY-chain. look here www.sudokuwiki.org/XY_Chains. I also found this chain though that did not help much. Still a very cute arrangement!
@Birchbayaromatics 4 жыл бұрын
Beautiful double x-wing! really clever
@yichen6313 3 жыл бұрын
Nice puzzle, some x-wings, some triples (and a key quadrupole), and a swordfish
@dliessmgg 4 жыл бұрын
I managed to find exactly one number before starting to watch the video.
@jbsoul4575 3 жыл бұрын
The 7 in row 5. Me too.
@kimberlypreston6204 3 жыл бұрын
I have the 7 and contemplating if I should watch the video. I don't want to give in. lol. So i am reading the comments hoping for some guidance.
@susanne5803 3 жыл бұрын
@@kimberlypreston6204 I do that, too. It feels like medium cheating ...
@jeffbrunton3291 4 жыл бұрын
thanks for doing these now, its good to have a distraction, a great one at that
@xxgfactorxx7407 4 жыл бұрын
I'm somewhat new to sudoku. How in the world you spot that 7,8 restriction is beyond me
@isabelsong21 4 жыл бұрын
26:24. The 2 x-wings were cool one those 6s landed into place.
@kaunteyabasu284 4 жыл бұрын
loved every bit of it....superb puzzle.
@brucerose4383 4 жыл бұрын
Very hard .. found triple in box 1 straight away, but then didn't know what to do with it .. needed assists to complete .. very nice puzzle ..
@tommylee6267 4 жыл бұрын
Wow! Crafty! I really enjoyed this one!
@malice1105 4 жыл бұрын
Started the puzzle by finding the X wing on 7's, gave up shortly after. Watching Simon's solve: "Ah there is an X wing....on 2's!" and shortly after " Oh there is another X wing, on 3's!" Colour me surprised, nice setting with this puzzle.
@hariman7727 3 жыл бұрын
There's also an x wing on 1s as well. ;p
@finbarrhayes5878 3 жыл бұрын
Fantastic puzzle. Thanks
@kellyb6096 2 жыл бұрын
Awesome!
@thecosmologist 4 жыл бұрын
At 7:05 when you identified the first X wing on the 2's you missed placing a 2 in the last column on the 2nd row, I was shouting at you, 'it's there!!', but you didn't hear me. It's something I do a lot when the grid starts getting busy. I have another Soduku game that lets you highlight all occurrences of a number which I find useful but doesn't support proper Sneider notation so I've stopped using it. Does anyone else think being able to highlight all occurrences of any number is a useful feature to add to your web app? Which I love by the way. Thank you CTC.
@tscjiv 3 жыл бұрын
At that point, it seems to me that the 2 in box 3 could be in either r1c8 or r2c9.
@nblack2867 4 жыл бұрын
Anyone else notice the x-wing on 7s? It made me wonder if there was a deeper tactic I was missing, since that was 3 x-wings. Well, whatever it was, makes me feel good that Simon must have missed it too if it did exist :D
@hariman7727 3 жыл бұрын
I noticed both of the x wings on 7, but they didn't help until later on in the puzzle. There was also an early x wing on 1s.
@beni37391 4 жыл бұрын
I think there is an easier way to this puzzle... apart from the 2 and 3 xwing, there is a 7 xwing on row 3 and 7 which gives a 236 triple in row 9. With that, the rest of the puzzle essentially resolves
@glennmelven3414 4 жыл бұрын
That was hard.
@itamarolmert3549 3 жыл бұрын
65:43 for me, plus had to reference the video a couple of times after getting stuck.
@lincoln3307 4 жыл бұрын
Nice Riddler look!
@wanderlustwarrior 2 жыл бұрын
42:12 for me. Took me a while.
@pietndala7394 4 жыл бұрын
478 triple in upper left 3x3 box as a result of 478 in column 1 and row 1, could have made things simpler . A 23 pair in 1st row and column 5 , and 23 pair in the last row and column 5..
@Catman7442 4 жыл бұрын
Near the end in lower left block, I didn't follow why 9 couldn't also be in the middle cell when you said it had to be in the middle column, top?? Good instructive video. Thanks. (Beginner).
@RichSmith77 4 жыл бұрын
Simon's looking at what numbers still need to be placed in row 7. It still needs a 2, 3 and a 9. In the cell you are looking at, where he puts a 9, he can rule out 3 because there is already one in the column, and rule out 2 because of the pencil marked 2's both in the box and in the column. Hope this helps.
@wbtittle 4 жыл бұрын
Thank you.
@keniangervo8417 4 жыл бұрын
I solved this in maybe 40+ minutes with first some very basic moves and then had huge troubles and colored paths for candidates. I didn't even find any triples.
@kevray85 4 жыл бұрын
WOW that was a toughie!!!
@RandomBurfness 4 жыл бұрын
A time of 40:29 for me, only because I'm still ABSOLUTELY RUBBISH at spotting triples. I got the X-wing on 2's and 3's very easily, the swordfish on 4's was easy to spot, but the 459-triple in column 7 took me far too long to spot.
@tbpotn 4 жыл бұрын
I did find the triple in box 1. I did not spot the x-wings, nor did i get the 78 pair out of it after watching the video. This one's a bit too hard for me! Nice puzzle though.
@thorwid 4 жыл бұрын
At time stamp 15:23 , how is it possible to resolve the 6 and eliminate the 4 from row 5? What would happen if the 4 was in column 3 in the top-left 3x3?
@routhy46 4 жыл бұрын
The box was a 46 pair and it can’t be a 4 because you’d be left with three 78 squares in row two. Three squares can’t be 7 or 8 so it had to be a 6.
@msolec2000 4 жыл бұрын
Do you mean column 5? At this point there's three cells in row 2 that can contain only 4, 7, and 8 (columns 2, 3, and 7), so there can't be another 4, 7, or 8 in that row.
@Martmarish 4 жыл бұрын
I suppose you mean column 5, row 3? It's because if you have a 4 there, it would be 3 squares in row 2 that could only be filled by two digits (7 and 8) - which is not possible. Two clarify: if it was a 4 in column 3 in the top left 3x3 - what do you put into the 78 square in the top right box?
@RodMorningwood 4 жыл бұрын
@@routhy46 Thanks for the cogent explanation. Makes perfect sense. But, as I've claimed in another video, this does not explain how he can claim this is a "478 triple".
@routhy46 4 жыл бұрын
@Rod Morningwood I see what you mean. I only have a guess as to why he uses the term “triple” in this case. Three cells in row two can only be the three numbers 478 collectively so it’s considered a triple (three cells, three candidates). I think the term “hidden triple” is used in cases where three numbers are already unique possibilities in three cells, but are buried amongst other candidates. In this puzzle they are not unique within the row because of the 4. But since 478 are the only possible numbers (they aren’t hidden), it’s just a triple. Am I still cogent?
@marcpoulin57 4 жыл бұрын
I found 4 x-wings, many hidden pairs and triplets. It took a very long time but I am quite proud of myselt.
@cbesthelper404 2 жыл бұрын
Got it in a little over 8 minutes.
@mrmckenzie0 4 жыл бұрын
I got that 7.
@LeCrenn 4 жыл бұрын
Hahahaha! Yep, same here.
@davidh.4944 3 жыл бұрын
I didn't enjoy this one as much as I expected. The digit patterns are spaced in a way that is almost impossible to work it with any efficiency. One of the most frustrating styles for me. I spent forever going round and round, hunting down eliminations, only to mess up just as I thought I was getting somewhere, forcing me to start over. But I did eventually spot the necessary x-wings, and triples, and a swordfish on 4s. It took an additional 90 minutes for me to finally crack it, and even at the very end I had a bit of a panic over a couple of misplaced numbers. There is one interesting thing about the puzzle I discovered, though it's not really useful. Before you start, highlight the locations of all the possible 4 candidates in the grid and you'll see a neat double-square pattern.
@DougCube 4 жыл бұрын
Before the solve began, you mention "hidden-triples". And at the very start of the puzzle using row 1 and col 1, you must have a 478 triple in box 1... could have found it without any pencil markings.
@terryleddra1973 4 жыл бұрын
I solved it. Took a bit longer than 20 mins mind. I found the X wings but I missed that 4,7,8 triple in the top left box.
@skimeup 3 жыл бұрын
Found x-wing on 7, missed the 2, found the 3. Found the triple right away. But I needed the 78 pair to finish it. Yikes!
@ronmasters751 3 жыл бұрын
Drives me crazy that you don’t work in numerical order.
@TheSpawnRoom 4 жыл бұрын
14:52. I quickly realized that the numbers below the top boxes had to be surrounding the inner corners (478 around the 2, 567 around the 3). After that, it was pretty simple.
@iosifoulis 4 жыл бұрын
21.22 ty for the puzzle
@FloydTaylor 3 жыл бұрын
1:05:59 an hour.
@calbaking 3 жыл бұрын
took me 57 mins 57 seconds and I had to use the video's help with the X-wings
@cindyshirey8561 2 ай бұрын
Finished in 4 minutes. 6/10/2024
@ol1ver49 4 жыл бұрын
Just being able to find X wings doesn't help if you don't know how to use them. I found ones on 2, 3 and 7 but was still stuck. To be fair I didn't know that the squares common to the 2 & 3 X wings had to be a 23 pair. So I had to watch to that point, then everything fell away very quickly because I had so many pencil marks. (I had that 478 triple very early on). But I still didn't see that I had 8 and a 46 pair in the middle column! Why?
@MichaelJPartyka 2 жыл бұрын
Welp...I've definitely got to get better at spotting X-wings, that's for sure.
@loyemerson7551 3 жыл бұрын
@14.00 wow, still not spotting anything. Welcome to my world.
@chompyzilla 4 жыл бұрын
I didn’t see the x wings, but I found a whole bunch of empty rectangles
@bryanroland8649 4 жыл бұрын
Now that you've told us how good Anax's crosswords are, how about featuring one of them on your channel?
@ellashaked8463 4 жыл бұрын
I don't understand how he did that in 15:25 can someone explain please?
@timpt 4 жыл бұрын
If you have 3 squares that all must contain the same 3 numbers then they form a triple. The 4 MUST go in one of those three for it to work out so you can eliminate it from r2c5. אלה מורה
Fabiosa Best Lifehacks
Рет қаралды 18 МЛН
Fabiosa Best Lifehacks
Рет қаралды 18 МЛН