The Second Hardest Sudoku

[@jacoblovell3966]

welcome back brethren, it seems KZbin algorithm has brought us all together once again. hows your day going?

[@janitgjay3157]

Wonderful,hbu

[@JulianMC46]

Considering that I’m watching the second hardest sudoku in the world at 2am, even though I don’t even know how to play sudoku, I’d say obviously pretty shitty.

[@yrrahyrrah]

Very well, thank you. As with the fellow commenters, It's way past midnight and I should be sleeping instead of watching these.

[@jimi02468]

Trying to get rid of the bad habit of using the front page of KZbin.

[@BraziliansDid911]

wish I was this big brain tbh

[@24.7]

Teacher: the test isn't going to be that hard. The test:

[@stancymarkshanepasis6623]

it's not easy but it is solvable

[@brendanredinger8447]

This dude’s smile is so wholesome when he figures it out I love it. I’ve only found him tonight as I near midnight but he’s great

[@KurtHugoSchneider]

really lovely design of the puzzle and also a satisfying solve, definitely not so easy to make it look this elegant and have a unique solution..

[@coloripple]

I love that a big youtuber like you seems to have become a regular viewer here!

[@jip2847]

I don’t really like the antisemetic design

[@sdm000]

Halo, Kurt! Kamu sehat? :D

[@fabianstrobel4767]

Kurt Hugo Schneider Never tought i find kurt during 03:00 KZbin Algorithmen

[@vodkastrats]

@@jip2847 It's not, the swastika looks towards the right, not the left, when it looks towards the left, like it now does, it is a symbol used in Buddhism.

[@Deorman]

"It's not easy but it's solvable" he says as he breezes through the puzzle, congratulation.

[@figa5567]

How on earth did he spot that problem in 22:50 so fast. What the hell. Everything so far was prety "normal", but that one completely baffled me. Seriously impressive.

[@thomasgovaerts]

22:18 me when I finish my day of "work"

[@bakbak4960]

this made me jiggle. Thank you

[@aappaapp6627]

Very nice

[@nuncatemeluchar]

dude you made my day with that comment... but it's sad because i'm in this situation right now

[@wickedsamurai3323]

Fyi you can do polls directly through KZbin

[@JrLv38944]

i swear i’m always a month late on everything youtube recommends everyone else now i’m a whole month behind on sudoku meta !

[@Non-disjunction]

Im a year behind

[@gamma1637]

Fact: You didn't search for this Still interesting though

[@dolcengabana6066]

Fun fact nobody searches on KZbin anymore and funfact when TF did anyone ask and stop with the unoriginal comments

[@sssharkey6185]

@@dolcengabana6066 fun fact: nobody cares about your opinion

[@ReoiteRL]

@@sssharkey6185 fun fact: nobody cares that nobody cares about his opinion

[@00ooo000o]

Sharkeyyy i care about his opinion because he’s right.

[@bruhmoment1835]

@@sssharkey6185 uno reverse card

[@editionnxway]

KZbin algorythm: So I heard you played Sudoku a few times in your life so here ya go

[@freekdomburg6081]

When you're trailing behind and pausing the video all the time but are 5 seconds early at one step: Einstein has entered the room.

[@jasonzheng4893]

Funnily enough I seem to be the only guy who actually searched for this video

[@MegaSlenderMinecraft]

Jason Zheng you are, algorithm brought the rest.

[@thiccbacon3788]

Jason Zheng EVERYONE LEAVE IT AT 69 LIKES! THIS IS AN ORDER

[@MaHaHzias]

@@thiccbacon3788 some cnt did the unthinkable ... 70 likes

[@soju69jinro]

@@MaHaHzias too bad, as of 4/9/20, it's 7.3k

[@PearDBD]

@@soju69jinro He was talking about the likes of the comment, not the video.

[@TheFlakZak]

Took me 3 hours to complete it, started at 2 am and finished at 5am, with a bit of cheating by checking your video. And you solved it in like less than 20 minutes. You are a god

[@slimstubbs]

I wish I could feel as much joy as this man does at 26:26

[@noahkangas6725]

This was like trying to solve a mystery lol. One clue led to another. Mind Blowing

[@mydickisunbelievablysmallb8132]

That’s sudoku for you.

[@danrouby6518]

Have a go at Einstein's riddle if you enjoyed that. It's nowhere near as difficult but a nice challenge

[@ddrosler]

"I hope you got it too" definitely no one got this but thanks for believing in us

[@fotisvon9943]

“No I don’t think I can do any better than that” Me: totally lost “ah, just what I was thinking”

[@petrifiedeldritch2104]

When I was a kid I used to solve suduko puzzles.. this gives me nostalgia.. thank you

[@tiithendrikpiibeleht4092]

09:19 for me, adding pencil marks to all the thermos made it a lot easier.

[@Thaplayer1209]

Tiit Hendrik Piibeleht I thought this was fake until I saw the name

[@hvdklauw]

Yeah his reluctance to look at the thermos really slowed down the solving time of this one I think.

[@tasatools2959]

indeed !

[@jakobtheiner6329]

Yep, I also started with the thermos and starting from there it was actually pretty easily solved. Of course it still took me almost a half hour due to slow monkey brain syndrome :D

[@Mike-ej6xb]

I hated sudoku as a child and adolescent, and have never once been interested in it in my entire life. I worked on the puzzle as much as I could, watching your video and pausing once I was able to continue. Solving essentially alongside you so I could get a grasp on how to find the solution for this. That was an amazing experience and I've never felt so happy doing a Sudoku puzzle. I'm going to look around online for beginner Sudoku puzzles. This is an excellent way for me to spend my time during Quarantine. I have no idea how I found this video, but the youtube algorithm has dragged me here and I can't thank you enough for providing such a relaxing experience. You've single-handedly inspired me, and probably many others, to learn how to solve Sudoku puzzles, and I want to let you know that I value the experience this video left me with, and that I aim to be able to engage more in future content. Thanks so much Mark.

[@guruhoro]

Took me 51 minutes and 59 seconds... But I finally completed one of these without checking the video for clues! I wouldn't have been able to if not for watching this channel for a dozen or so hours. I always tried solving with you, pausing after the puzzle rules explanation, and I think something finally stuck. I find it fascinating how much easier it is to think about these puzzles when I have names for things like "triples" or "x-wings". I was able to spot some of the common patterns before having names for them, biut naming them helps remember where I saw them and speeds up my thinking.

[@nina-thi]

I actually tried this. After 14 minutes I had 4 squares filled in and gave up. Then I watched this video and apparently had the right approach. Also filled in the 1, 3 and 5 first

[@joesable1902]

Jesus christ I've never solved a sudoku ever but this was fucking mesmerising to watch at 12am to fuel my sleep deprivation

[@ahmetgrcn2663]

How in the world could you manage to see that problem with threes when you put a 4 there? These puzzles are crazy. Well done.

[@oilpump2443]

He is the bob ross of sudoku. Both of there voices are like a warm blanket.

[@Jonasolsenwoodcraft]

First sudoku video i have seen on youtube. Very interesting to watch!

[@BruCipHiF]

Same!

[@Zalanash]

20:55 "it cant be two for those two reasons" I see what you did there

[@mariasantara]

I solved this with your help, 3 times i had to stop actually write down why you said it works like that, tried to wrap my mind around it!!! Never could i ever solve a sudoku like this on my own! Really enjoyed this a lot!

[@nudel97]

14:40 "Now we have a 6/8 pair here",solves the 6 in row one and forgot about the pair ^^

[@Psoewish]

Took me 2 hours to get this one, but I finally got it. How you manage to do these in about 25 minutes will forever be beyond me haha

[@harrisondwyer8532]

it seems this man has cracked both the sudoku puzzle and the algorithm simultaneously. Big brain moves right here

[@DWestheim]

45 minutes for a soul-crushing contradiction. Gonna get some cookies for comfort now and watch where I went wrong in like the first five minutes...

[@2001herne]

First time I actually tried to do the puzzle instead of just watching. Had to reference the video about 3-4 times, but I'm pretty pleased with myself.

[@SvviftDeath]

I managed to have a faster start but I got lost going down an incorrect path in the middle. That made me double back and finally finished with a time of 41:36. I can't wait to try the rest of the puzzles.

[@wakka0222]

22:40 this guy read the sudoku puzzle 5 moves in advance. Wtf mate I can barely manage 2. Well played good sir.

[@avantredguard565]

I hardly am able to solve any of the puzzles you feature on my own. This took me about 38 minutes (probably a little less, I was distracted a little bit while the timer was running). Very good puzzle, proud of myself for having solved it! Thanks as always for sharing a great puzzle.

[@sudokuvariante]

7:48 on this one. Nice thermo-sudoku, nice solving path !

[@apaige3313]

going back through your videos and tried this one -- got it in 23 minutes! feeling great about it

[@lemlem35]

I am absolutely awestruck by this and now I want to watch so much more

[@oofyeetmcgee]

5:13 for beginning

[@Nathan511]

When I try to fill possible values for cells in a thermometer I like to (starting at the bulb), put in just the minimum value the cell could be and continue doing that all the way up the thermometer. Then I put in the maximum value (starting at the other end) and continue all the way down. Afterward, I fill in the in-between numbers if there are any. It's fairly quick and I'm surprised Simon doesn't do it this way.

[@nithqueen]

honestly managing the ''second hardest sudoko'' with a bit of help in the hardest part feels a bit like an achievement. thank you

[@no-feetmcgee5577]

"The hidden clone looks monstrous, don't ask us to do that"... thus ensuring the hidden clone will win, lol.

[@gustavenk]

46:59 which I was quite pleased with as I’ve done very few thermo sudokus :-)

[@gladialle]

i’ve never seen a sudoku like this, just the classic style, but you explained this so clearly! even though i think this would still take me hours to crack, i now feel i’m equipped with the tools to do so. cheers!

[@MrUgleh]

At 22:42 you can solve that thermometer pretty easily at that point because the 6 cannot be at the end of the thermometer, meaning you can't have 1 be at the start, which unravels the rest of the thermometer. I've never even solved these kind of hard sudokus before so I was kinda proud when I saw that.

[@gordontang7837]

This was recommened to you too eh

[@BallerineMimi]

Love it! Loving watching these videos as I attempt the sudoku, and pausing until I get stuck! So good!

[@bhumikgangwani1570]

At 15:03, when you thought you were stuck, you actually had two open squares in rows 1 and 3 of column 1. The 6 would have gone in row 3, column 1 and the 8 would go in row 1, column 1.

[@12tone]

Wound up getting a bit stuck early on, had to do some pretty convoluted reasoning to prove that r4c3 had to be a 9 but it all fell apart from there. Interested to see what I missed!

[@AurelUrban]

same, I figured out the first 4 digits and the restrictions on the thermometers and then got stuck. It was the darn triples in column 1 and box 7!

[@somebonehead]

Oh hi 12tone!

[@straightsavage6696]

Just what I needed during my depression KZbin deep-dive binge

[@chinesecabbagefarmer]

You too huh? Algorithm really must care about us.

[@ceradiono7823]

The trick at 22:43 was the missing piece for me! After I did that everything else fell into place. Thank you!

[@Blackmoon972]

Telling the internet that you don’t wish to do something that corresponds with a “what should I do” poll just solidified a win for the clone sudoku

[@Deezcartes]

thought this was a swastika for a second from the thumbnail but we're good its the homie mastering yet another round of the classic game sodoku

[@cloneskiller]

And it was 4/20 when i saw this pop up.

[@enigmaticgale7436]

07:40 "we've done a lot of work for absolutely no digit..of course.. hmmm..we really have done so much work for noo digit.

[@daniel-mq1wt]

Probably the most satisfying video I’ve ever seen thank you very much sir!

[@zacharybarber9265]

This guy is a really good teacher

[@258thHiGuy]

I really have to say I love how excited you get over solving one of the thermometers

[@OzixiThrill]

I only found this video and it took me about 30 minutes to figure out... It was a fun sudoku, all in all.

[@sunriselg]

Half an hour in, I'm very stuck. I need to watch the video. Edit: I didn't see that triple. That helped, but now I'm stuck again. Edit2: I had to watch the video until 23:35. Overall solving time 1:12:27.

[@ForeverDayGreen]

Basically the same 😄 No idea on how to spot that trick with the 3's on my own

[@cosmicrays5565]

You actually a genius this took me 19h over 6 days

[@CoasterMagicX2]

Wow! You're detailed explanation of your method and British flair made my night. Great video!

[@dockwonder2278]

I tried really hard to follow him, but my man was too fast lmao

[@aeteno703]

I have no idea why this was recommended but it was fascinating. Great video!

[@JeffPeterson1989]

I got the 4,6 at the end by looking at the bulb. If the bulb is not 1, then the rest of the thermo is 5,6,7,8,9; if it is 1, then r5c5 is 1 -> 2 in r5c4 -> 3 in bulb at r9c4 -> 4 in the next thermo cell, seeing the 4,6 square. In either case, the last 4 digits of that thermo are 6,7,8,9

[@58209]

i have no idea how this ended up in my recommendations, but it was really engaging and educational, and i look forward to watching more. thanks for the content.

[@58209]

oh my god all your videos look like clickbaity hyperactive video game highlight reels, but they're actually just chill logic puzzle solving sessions, lmao

[@cat1mouse2]

Was supposed to sleep but because my phone listens to me it recommended this video and I got hooked! Lolz wonderful video

[@titleloanman]

I’d love if you did some more minesweeper variants. Those are really neat.

[@chad2687]

Quarantine and chill is looking good with all these vids

[@keith4643]

I got to 22:45 before I needed help with the trick. Pretty happy with that!

[@tchoate14]

22:46 fixing r8c7 was my sticking point. I was there for at least 20 minutes. It never occurred to me try a candidate. Silly me.

[@muleeight]

Same here. I was stuck for 30 minutes there. 1:14:19 solve time, I’m a bit new to these techniques

[@moocowpong1]

I feel like I learned something from Kurt's puzzle the other day that I could apply here. It was a very nice puzzle, got tricky towards the end!

[@gposchman]

I got all the way through to the 3 in the 9th row, but I wasn't looking for it. Thanks for the tip, another teaching point that will improve my game. Thank you very much. Thumbs up and I'll later attack another puzzle in one of your apps. Gene

[@sharkcon6673]

14:48 this is the only time that I feel so smart, cause he missed it for a time there, even though I didn't really do anything xD me: "THEN THE TOP LEFT CORNER SHOULD BE 8!! THEN THE FIRST COLUMN TO THE THIRD ROW SHOULD BE 6!!" 😂

[@bgmarshall]

Same thing for me, but with a much more pointless thing to do 4th collum, last row, I was so annoyed he didnt get rid of the 4 possibility until 16:38 I've now been angry he hasn't put a 2 in collum 4 row 5

[@lovetownsend]

Solving the puzzle is amazing but CREATING the puzzle is even breathtaking

[@durian7551]

Absolutely elegant

[@StevenJacks]

Good lord. Thought I had it 10 times. Finally done at 56:30.

[@michaelwolf9885]

Just discovered your godly channel through KZbin algorythm and wanted to point out something. You could've looked into the 1s as soon as in 15:00 (didn't backtrack how much sooner it would've been possible) and therefore be able to solve the last thermometer later on without going into trial and error techniques. Beautiful Sudoku.

[@courtney1395]

Love to watch you, your voice is very calming!

[@Miss_Ally]

Im a huge sudoku fan and this is the first ive heard of themro sudoku. I really enjoyed this video. so challenging.

[@mritty115]

16:31 I was internally screaming about that 4 for the longest time.

[@KumaKaori]

3:08, "you /don't/ want to do the hidden clone sudoku?" you've doomed yourself into it now, you realize >D. Good Job Twitter, Good job, a solid half of the votes XD.

[@Wouter10123]

Secretly, that's the one he wanted to do.

[@hannahbuckley9988]

i was doing really well with this, then that bloody 6 at 23:38 stumped me for half an hour!!! i had no idea how to tell whether it was a 4 or a 6. Your explanation was great though and I learnt something new!

[@TwilightMysts]

Considering I am a mid-range sudoku player at best, and I've never encountered the thermometer rule before, I am pretty proud of how well I did. I essentially kept up with him on almost everything up until he spotted the trick at 22:30.

[@triplea657aaa]

Tbh not as bad as I was expecting. I had a few points of struggle, but a really elegant and fun puzzle. Quite beautiful.

[@jgoemat]

Nice one. Got stuck twice and had to look at the video (678 in col 1 and the trick in r8c7)... Simon frustrates me with how long he takes to do the thermometers though :) I started with them and had them all restricted to 2-3 digits in about 80 seconds (13 to 2 digits, 11 to 3). Simon was 17 minutes in before starting the 3rd thermometer and over 20 minutes in before really looking at the 4th...

[@nortalian549]

Yay! I did it in about an hour with only minimal going to the video to see that I didn't horribly mess it up somewhere!

[@Sahjhan]

I got stuck at R8/C7 and would've never come up with the solution myself (unless trying countless walkthrough-tests starting at the other corner of the grid - which wasn't going to happen). Once I got the answer for that from this video, the rest was a piece of cake.

[@Westez499]

55 min for me. Had a blast. thx Simon :)

[@alienrenders]

1h20m. I had a hard time eliminating the 5 at the bottom on the thermo at the start. After 40 minutes I started over and that time I finished it. There was another contradiction aside from triples. For example, on the left, if you put a 5 on the bottom left thermo, both 3 and 4 would need to go into a single cell in column 1 in the box above which is impossible. Same trick happened on the right side.

[@TheScotts-z3z]

idk why im watching this I dont even know how sudokus work, but keep up the great work

[@nigglytoes7788]

“I hope you got it too” *blinks* what

[@boriszakharin3189]

This is the first one I came close to solve it on my own. I had to get help at around 14:00, then finished it completely by myself after that.

[@praematura]

29:23 with one tiny nudge, I'll admit. Definitely a fascinating puzzle, however!

[@AshishGupta16]

22:49 was incredible!

[@1AmTheStig]

I got to the exact board position as you at the crux at 22:30 but had to look at your next move for how to get through it. I wonder how many people arrive at that same crux with the board in the same state.

[@DriesGrobler]

Wow that was fun! Love the explanation along the way ❤️

[@lakarto19]

Solved in 23:54, using almost identical logic to the video solve. Wonder if there's another trick to solve the thermometer in the bottom right, or was that the intended path? Anyway, enjoyed solving this puzzle, and really looking forward to other puzzles from the Grand Prix; they all look fantastic.

[@vikingslayer34]

Tiit Vunk. Best name ever.