Are You Smart Enough To Start?!
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- čas přidán 26. 09. 2020
- Today we feature another puzzle by ukudos and it's a gem. You can play it here:
cracking-the-cryptic.web.app/...
Rules:
Normal sudoku rules apply. In cages, digits must sum to the small clue given in the top left corner of the cage. Digits may not repeat within a cage. The purple line represents a 21-digit palindrome the ends of which have to be deduced (i.e. the first digit and the last digit lie adjacent to each other on the purple line).
[A palindrome is a sequence that reads the same backwards and forwards. So, for a 10-digit number, 1234554321 would be a valid palindrome whereas 1234554221 would not be.]
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Our Patreon page has lots of extra content! Our solve of Cosmology by Bobuardo Da Vinci is just out and we've just released our Tour De France September video! Coming soon (1 October) is a new puzzle hunt (which includes sudoku) by Scott Strosahl.
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▶ABOUT US◀
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.
Thank you for watching!
Simon and Mark
I love these types of puzzles where the logic is too advanced for me to figure out on my own but easy enough for me to follow as Simon solves it. Makes me feel smart for not doing anything.
I often pause during the video and check things on my notepad. like how to build a 19 in 3, what valid possibilities remain with two 7 boxes removed and so on.
But that also means that I, who have had a lot more time to look at the screen than Simon have found things he hasn't XD.
@@_aullik well yeah... I do it on my own and then get stuck, so I watch until he sees something I didn't and then I'll pause again. When I see something before he did and have to wait for him to catch up!
As a junior in high school I second that
16:52 "This is gorgeous...look, this can't work!"
Simon gets more joy out of things that can't work than most people when things go exactly right.
“I’ve rarely seen a more useful digit” is definitely an appeasement to the sudoku gods.
I laughed out loud. English humor is wonderful!
One of these days someone is going figure out how to set a puzzle specifically for Simon where every important breakthrough is made by scanning down to the bottom of a column ;)
Maybe those puzzles are in the videos that never get published
And a ruleset that allows nines in all the corners.
That sounds like outside sudoku
28:08 that's useless as well... Looking for a few seconds. Actually it's incredibly useful.
CTC: Come for logic, stay for Simon's commentary.
"Let's get some pencil marks in early to make us think we're making progress"
Oof I know that feeling
Me when I attempt any of these puzzles: cool I’ve pencil marked everything I can but I don’t see the break in. Gg time to watch the video
"This square should be Fillable Inable" 34:12
I love how excited Simon is about being able to put zeros in the grid in the new software.
28:18 “You rotten thing” has become my new favorite insult 😂
I have to say... I did not think I would get so addicted to these types of sudoku-puzzles. I really love this cannel. At this point I watch one to three of them daily until I find a Sudoku I actually can solve myself. I spent two to four hours of my days, first attempting, then failing, then watching your solution, then attempting another until I finally succeed at something - and then still watch your solution just to see how much faster I could have been.
Simon: "This has to be 5, 4 and that breaks the 6-cage, so this continues..."
me: pauses, stares at it for a minute, "Oh, OK, I see, NOW we can continue."
I'm only a novice at sudoku, but today I actually found a number way before you Simon! Idk why but it made me so happy! This was a first for me! I know it's not much but noticing something first before a skilled person such as yourself, it just made me giddy inside hehe thank you for another great video!
I love the fact that Simon is near god-like with logic and break ins but sometimes struggle with the simplest scanning.
or with breaking up 21 into 10 - 1 - 10
So proud! Solved in 1:32hr all on my own using the same logic Simon used to start the puzzle. Mark and Simon, you guys are legends for exposing us to these mad puzzles and all you setters out there.... no words! Thank you!
I can tell you felt really bad about belittling that 3 when you said it wasn't helpful at all ... it looked like you were on the verge of sending it flowers 💐 and a box of chocolates 🍫 to apologise!
That was a good but challenging puzzle. I needed a couple of hints from the video - where you said "let's look at...", and I could then pause the video and figure it out for myself without needing to see you actually do it - and completed it in 1h10. Very proud of myself for spotting several virtual pairs, which I don't generally find 😎
I haven’t finished the video yet, I’m at 25:03. And because of this logic here alone, I know that I 100% want this as your next app. Palindrome Sudoku.
Please continue adding the thought bubbles to these videos, it’s such a great touch to your already marvelous videos
28:09 favorite Simon sound ever
I absolutely love your enthusiasm!
That was beautiful indeed. So many interactions to limit options, all spread about the grid. A puzzle hunt in one puzzle!
This is probably the hardest puzzle I’ve ever seen you do (in my opinion of just following along). So much so that I had to send this video to friends. Very well done on such an amazing solve.
I tagged along and thoroughly enjoyed this very beautiful puzzle! Thank you very much, udukos and Simon!
I really enjoyed this one. Felt really good to solve prior to the watching the solve. The logic to get it going was daunting but quickly became entertaining once you see how quickly one cage affected another and another and another.
I thought Australia
Same
haha there's no Cape York!
Semi-offended as an Australian viewer 😂
Especially since the part I live in looks cut out!
It’s true we often forget about the Tasmanians though.
Are you suggesting the puzzle is upside down then? 😂
I thought old Silverstone racing track, a little bit. With a couple extra turns.
I honestly don't know why you guys came across my recommendations, but I am sure glad you did! Great work guys. Keep it up
I love the momentum of these crazy puzzles. Once you start figuring them out they become regular sudoku but with more information
You solve puzzles for hundreds of thousands of people, in your house, as a living.
Madness was never this good
28:15 - "That's useless as well."
28:44- "It was incredibly useful, I've rarely seen a more useful digit."
Funniest thing I've ever seen on this channel.
Simon made this one look easy. Impressive stuff, and a great puzzle!
beautifully done, Simon.
Am I smart enough to start? Emphatically “no”. Good solve!
my favourite thing is when Simon spends a while figuring out some logic to get a number, and then just says "Well that's completely useless"
I got the 89, realized I wasn't making any progress and gave up :)
im glad the first thing i thought of when reading the rules is also one of the first things you thought of as well, finding the start/end of the palindrome
A puzzle that requires new logic that is accessible (not Mark "accessible" but actually accessible) is a lot of fun. Thanks udukos!
It's about as accessible as quantum equations.
"I'm now starting to wonder whether I've made a mistake" while deleting wrong square.
this is puzzle art for sure, I'm not quite sharp enough at this sort of puzzle to complete it but i can appreciate the beauty
It’s so interesting how the logic can progress different ways, I’ll see something that I expect him to get to but then the way he does it is so different
Not sure if it was mentioned somewhere else but once you found the naked single 3 in box 5, the 3 in box 6 was knowable which would have given the rest of box 4 and then you're off to the races. Not that finding the triple didn't work, but finding triples is trickier than free digits. Brilliant puzzle and a wonderful solve. :)
Lovely solve, very enjoyable to watch.
I couldn't figure any easy way into this puzzle (the palindrome start and end was easy). So I bifurcated the 6 cage on the right. 15 pair was easy to dismiss. I ended up picking the wrong order for 24 and it took a while for me to reach a contradiction. After that, it was relatively easy.
The 3 in the fourth column was available SO EARLY with the 35 pair and it led to even more stuff in the west section and you worked so hard to get it backwards! But honestly that just made me laugh because I had trouble even following your brilliant logic with you holding my hand.
I don't see it :-(
How early are we talking?
Took me about 2 hours, this puzzle is extremely brilliant and very fun :D
This was brilliant and I really enjoyed watching you solve it!
Yelling at the screen moment:
“That 3 is absolutely useless...”
Me: “No!! 6,4,7. 6,47!”
Looks like a race track!
I wasn't smart enough to finish it because I got lost in my pencil marks half way through but I _was_ smart enough to start it, so finding the break-in locating the position of the beginning of the palindrome figuring out by myself the same logic that Simon used here already counts as a win in my book!
28:10 is the best noise I’ve ever heard
One of those very rare cases where I did it in less than half the time of the video (sometimes I cant even complete the 20 minute ones)! Got off to a good start with finding the ends but looked at where 8&9 could go (very limited on the shape) in the limited boxes
Simon has such charisma!
I doubt I could have broken into that - didn't even attempt it - but I have loads of fun watching the solve. It really was a beautiful puzzle. Thanks for showcasing it, Simon 👍
I don't think i could even get the starting number lol, its just amazing to watch the whole process
Well poo! I figured out the beginning and end of the palindrome in like 2 minutes and then thought this would be easy. It's been a long time since I encountered a puzzle on here that I couldn't solve ... but here we are.
Another great puzzle
Took me 1 hr and 2 minutes, but it was a blast and one of the most fun to solve on the channel.
I love how Simon almost excused himself to that one square he called useless ;)
I seem to solve very few puzzles that I come across on this channel yet I managed to solve this one!! Proud of my efforts :D
Also: Tilt your head 90 degrees to the left and it's the outline of an elephant's face!
That was a lot of fun. Straight, bull-headed logic all the way through without any complicated steps. You just had to follow the restrictions with the palindrome and work through it all.
I was 57:48 - and I thought that was a great time for me.
And I've been sitting here at it for well over an hour; got as far as the 17 cage being an 89 pair (well, a moderately bright 7-year-old could get that one), that certain cells can't have 8s, 9s, and 1s, and ruled out a few starting/ending positions for the palindrome... and that's it. I haven't started watching the video yet but it just seems like there's nothing more to go on. It's disheartening to see other people solve it so quickly. I feel like there has to be some insane trick that requires advanced maths but you say there isn't. I'll give it another couple of hours and then watch it.
@@siorac1147 The starting point is figuring out where the palindrome starts and ends. Then the low number cages in the bottom half of the puzzle can be started. They bounce back and forth from one side to the other (with a bit of trial and error) and once you have the first 6 or so numbers in the grid, the puzzle becomes quite manageable.
As you solve it, keep watching the cages. Each cage will start out with 2 or 3 possible sets of number in them, but suddenly one number somewhere else (especially along the palindrome) can remove all but one of the possible sets. You will end up with a lot of penciled-in pairs/triples that will suddenly all solve by finding one or two specific numbers. At least that is how it went for me, and Simon seemed to have a similar result - although he found some much faster than I did.
@@jameswiebe8956 thanks. I got the palindrome eventually and then I needed a hint from the comments that I should do some trial and error with the 7 cage in box 9. Once it turned out that that one can be disambiguated fairly quickly because of the other cages and the palindrome, I managed to figure it out. Slowly - and I by slow I mean GLACIAL - but surely.
@@siorac1147 Yeah, that's the way I feel. I have some that go very quick and I feel good about myself, and then I have some that take me two hours. And they I have some that I stare at for two hours before giving up completely and watching the video. :D
An absolutely gorgeous puzzle. Because of the cage with the total of 17, the double (beginning or end) was easy to find. After that, I was able to quickly rule out some digits in the cages with the sums 6 to 9 and later had to experiment a little with the cage with the sum 16 in box 1. When I thought I had completed the puzzle correctly and compared my solution to Simon, I realized that I had missed the cage with the total of 10 in Box 2 ... for this reason some differences. So I had to go back quite a few steps and delete, but all in all I had a lot of fun during Simon's triple time.
I see a gorilla sitting leisurely on a ledge
Love this puzzle
Nice break-in!
5/5?! Na... then yesterday’s was a 10/5! It was fun this puzzle... beautiful logic and a linear path...
I got it in 56:34, which is definitely not the best time. I'm still really happy I solved it. I figured out where the ends were pretty quickly, which I was proud of.
I don't think I've ever finished any of these puzzles in under an hour, seems like a good time to me.
It's funny how the last digit he put on the grid (box7's 6) was solvable since 28:38!
Great solve
i haven't noticed that
Good catch!
I noticed that he does this a lot in his solves. Whether or not that's on purpose shall remain a puzzle...
@@eugenev13 Nah, definitely not on purpose. It's fine to miss stuff, though. You can try recording your own solve and watching it back. I can guarantee you, there'll be stuff like that too.
I am smart enough to start. Successfully deduced the start and the end of the palindrome and consequently the identical numbers. But no clue where to go from there. Will try for half an hour more before watching the solve
Oh my! I dont know why i decided to try this one out since i am very new to sudoku but solve it i did, just took me a bit over 3 hours haha.
50:49 ... but I must admit that I only really figured out the pivot point (and that took a good amount of trial-and-error); after that, I bifurcated the heck out of this and got lucky with finding *a* solution.
Diabolical puzzle!
50:49 the video is over for me
@@glitzyx4x852 I post the time it took me to solve the puzzle, which has no bearing on the actual video time.
@@Coyotek4 ah ok
Solved it with much help from the video.
Yeah, took me almost an hour to find the loose thread, though. Which is fine, it wasn't easy.
Edit: I pulled on a different thread than Simon did. It revolves around the 8-cage in box 9. The 7-cage next to it restricts it, and the 8-cage restricts the 9-cage in box 7 thanks to the palindrome. (Neither of the two digits adding to 8 can be involved in the 9-sum.) Finally, the box-7 9-cage can't be 4/5 due to the 6-cage next to it.
Now look at what happens for each option in the box-9 7-cage.
If the 7-cage is 2/5, the 9-cage must be either 2/7 or 5/4. But 5/4 doesn't work, and since the 8-cage can only be 1/7, 2/7 is also ruled out. So the 7-cage is not 2/5.
If the 7-cage is 3/4, the 9 cage must be either 3/6 or 4/5. 4/5 is ruled out, leaving 3/6 as an option. The 8 cage is either 1/7 or 2/6. 2/6 won't work. Does 1/7? No, for a different reason: 3, 4, 6 and 7 comprise all of the possibilities for R8C5! So the 7 cage is not 3/4. [This was by far my favorite part -- once I saw the effect of the 17 cage up top on restricting R8C5 I was sure I was on the right track.]
If the 7-cage is 1/6, the 9 cage must be either 1/8 or 6/3. The 8 cage has to be 3/5, which rules out 6/3. But 1/8 in the 9-cage remains valid, which sets the 7 cage as 1/6 with the 1 on the top.
I love this palindrome idea, very clever!
As for me, a difficulty level of this puzzle is insane.
Lovely!
I swear, I was shouting at him to fill in the bottom left 6 for 5 minutes, and it feels like he filled it in last just to spite me. Still, fantastic work
I have absolutely no idea how a puzzle like this is built.
I tried this for 5 hours. It's above my ability, but worth the effort.
I'm not smart enough to start, but wise enough to admit it.
That was a lot of fun.
Ok. I fairly quickly worked out where the palindrome started/ended. Then filled in a few obvious pencil marks. Couldn’t really make any progress, so bifurcated a couple of times to a solution. 36:22 was my time. I’ll be interested to see the logical way through.
47:49 with help from Simon, thanks!
Both of you guys have got to get better at cleaning up pencil marks! It trips you both up SO many times hehehe. Also, a pop filter for your desk mic. :) Interesting and insightful as always, and using methods I just can't seem to get my brain to look at.
You are like Steve Irwin. This snake is gorgeous, sure it can kill you only by looking at it, but is gorgeous.
Same here, this puzzle is gorgeous, sure it's impossible for most ppl, but it is gorgeous. :)
I found the palindrome easy enough but 40 min of staring at it was enough for me to give in.
A man, a plan, a canal, Panama. :)
^ This guy has ties to my hometown.
Sneaky naked 3. Beautiful finding. And not useless at all. :)
I'm smart enough to sit back on the couch, put my laptop onto my lap (hence the name I guess) and watch you solve it.. some of the numbers I was able to figure out, once you started going in a certain direction with the palindrome, though I would have been stuck in the very beginning to start it up.
edit: and on multiple parts along the way..
3:50 -- It seems to me that it might be easier to think of eight-seven and six-nine dominoes as adding to 15 and ruling out combos that can't be divided into six-nine or seven-eight. Also slipping in a few preliminary pencils could eliminate possible identical pairs along the palindrome. (The 98 domino helps there.)
I could only find the position of the palindrome and pencil mark some cells for the restrictions, but couldn't put the first digit in the grid. Illuminate us Simon
I correctly figured out where the palindrome started and ended, and hence the middle square.
That's all I could do, but it's better than a total Bobbins.
It reminds me to either the Iberian peninsula or a shopping kart
4:50 - I'm sure you were actually thinking about "Hanna", the fantastic action film with Saoirse Ronan., Eric Bana and Cate Blanchett.
Needed help to use the 7's to get the 19 cage. :( Enjoyed figuring out the ends of the palindrome.
"If you think about the word... Hannah"
Me, Hanna: Huh? What? I'm paying attention
good lord. i solved this puzzle before watching the video and still could barely follow this
I was seeing Australia but now I can't un-see that Tapir.
Is it possible you guys could release a new app that, instead of having one puzzle type, has a different variation of sudoku every day in a daily challenge?
17:55 we gotta get some lingo going here. What do you like, "dual", "couple", whatever, somebody give two-candidate cells a succinct name
24:25 There was an arguably easier way to solve this. (Well, even I saw it, so not much of an argument, it just IS easier :-D) It's the 9 cage in the right. If there is a 3 in r5c8, it forces the purple/green 7 to be 5 and 2, but it also makes the red square 6, and therefore the 8 cage in the left is 6 and 2. That makes both r5c1 and r5c2 a 2. So r5c8 has to be 8 and so on.
Now, what is the nickname of the setter? It's different in the description and the video (in the moment).
I managed to figure out where the ends were and then realized...that was not going to be the hardest part of the puzzle after all. Gave up after much staring. I feel like the point of some of these sudoku is merely to say, "Here's something you should think about next time!"
I figured out where the palindrome begins and ends, if that counts as starting. Beyond that I suspect I'm stuck.
I didn't see the effect of the 7s on the 19. After that it was tough, but a bit easier.