The Road To Becoming A Sudoku King
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- čas přidán 25. 06. 2024
- ** TODAY'S PUZZLE **
Scojo featured on the channel a couple of weeks ago with his favourite puzzle but many of you have suggested that your favourite Scojo sudoku is this one: Kingsroad. It's certainly a bit easier and contains some wonderful logic and plenty of opportunities to kick yourself too!
Play the puzzle at the link below:
sudokupad.app/6ul7danidn
Rules:
Normal sudoku rules apply. Cells touching diagonally cannot contain the same digit. Lines in the grid act as both Region Sum Lines and Parity Lines. Along a Region Sum Line, box borders divide the line into segments with equal totals. Different lines may have different totals. Along a Parity Line, digits must alternate between even and odd values.
Jane Street's Bug Bytes puzzle is available here:
www.janestreet.com/bug-byte/
(Simon's solve of this puzzle is on Patreon.)
** NEW SUDOKU HUNT ON PATREON **
We're delighted to share with you a brand new sudoku hunt themed around snake egg puzzles by Glum Hippo. If you've never tried snake egg logic puzzles before, prepare for serious fun - these sudokus are outstanding! Finish by May 20 to enter the competition!
Other treats on Patreon include:
- the Sumgeons & Diagrams sudoku by sunnyjum;
- Simon's latest forays into the world of Islands Of Insight;
- Mark's video looking at the new OneUp puzzle from Rodolfo Kurchan;
- his solve of Region Geometry by Emre Kolotoğlu (3hr 36min long...!);
- and Mark's latest solve of The Times Club Monthly cryptic crossword
/ crackingthecryptic
** GET OUR FOG KICKSTARTER DELUXE & OUR BOOKS **
Check out this link for the kickstarter books and Fog Novella we've created over the years:
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You can input classic sudoku puzzles into our software and help support Sven, the programmer responsible for the wonderful user interface we all use to play these puzzles everyday. The app also comes with 12 handmade puzzles from us:
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ALSO on Amazon: Search for “SudokuPad”
▶ Contents Of This Video ◀
0:00 Theme music & puzzle intro
1:02 Closing Date For Competition
1:46 John Steinbeck's letter To Marilyn Monroe
4:35 Happy Birthday
5:01 Rules
7:17 Start of Solve: Let's Get Cracking
▶ Contact Us ◀
Twitter: @Cracking The Cryptic
email: crackingthecryptic@gmail.com
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Simon Anthony & Mark Goodliffe
Box 102
56 Gloucester Road
London
SW7 4UB
(Please note to use our real names rather than 'Cracking The Cryptic'.)
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We also post the Wordle In A Minute videos on TikTok. - Zábava
What a nice surprise! I just watched back my setting stream for this puzzle and my exact words were "I think this was a successful setting thing, I mean it's not the best puzzle I've ever created, but I think it's interesting [...] Not one I expect to get a CTC feature or whatever..." Shows what I know! Your solve was excellent Simon, thanks as always for solving my puzzles!
Great setting from you!! Thank you for this!
Thank you for a nice puzzle - I really enjoyed solving it!
Very pleasant puzzle, thanks.
Yes. Thanks! It was a lovely puzzle, and not difficult at all! I actually only took a few minutes longer than Simon clocking in at 11 seconds short of 40 minutes (39:49 he he he). :)
12:27 😂 "we use blue for even because orange begin with O" I am convinced
that puzzle had sme of the best Simon shaenanigans. Asking himself if purple could be even right after deducing the other set was even, missing half the sudoku opportunities, some powerful Simonry at work today.
Orange and Odd both start with O
It took me an hour to solve, but I'm so pleased that I've learned so much on this channel that I was able to make steady step by step progress without any assistance. That felt especially rewarding. Thanks, Mark and Simon, for featuring puzzles with a range of difficulty that gives those of us with developing skill the opportunity to both learn AND experience moments of accomplishment. 🏆
This is trully amazing, I could not have better words!
It took me 2h 45m
Scojo's puzzles always seem to have hidden depths to them, straightforward on the outside but you keep peeling back layer upon layer and realize how intricate the whole thing truly is
My thoughts exactly
A generalization of parity deductions on this puzzle would be: look at boxes with even number of line cells, if the number of pairs of line cells is odd, the sum is odd, if the number of pairs is even, the sum is even.
“That’s just sudoku, and me not doing it” 🤣🤣🤣
Simon’s classic sudoku ethos.
Thank you to all the people who suggested this awesome puzzle. Of course, thank you also to Skojo for setting it and to Simon for featuring it.
I must confess *Chocholate banana sandwitches* were too hard for me to digest.
These combinations of variant rules can produce some real beauty and interesting interactions, even when the overall puzzle is not complicated. The king's move did a lot of work (and I love chess puzzles). I will put this one on my list. Thanks, Simon, as always.
Took me much longer than it probably should have. I was figuring out parity as I went instead of doing it all at the beginning so I missed some of the deductions that were more obvious once the parity was in place. First time commenting, but I've been watching for months! Thanks for your dedication to logic!
Hello Simon,
We are Maria and Iryna from Kyiv, Ukraine, and we kindly ask you at 23.05.2024 to tell your "Happy birthday" to Roman, who is son of Iryna and fiancee of Maria.
Roman likes to watch your videos very much, and this video is very often the last one he watches at night before going to bed. Because your videos really have the effect of an evening fairy tale: everything starts with an intrigue and it is not known how the events will develop, but you can expect a happy ending. Also it will be perfect if you add "We are proud of your successful career in 3D engineering and hope you to stay comforting, reliable and kund person" as he is in everyday life. Thank you 🙏
My first ever attempt at solving the puzzle before the video, got it in 59:51! What a fun puzzle too!
I finished in 93 minutes. This one took a lot of staring and calculation. I must have stared at the puzzle for half my time after I had already done the parity. Realizing the connection between box 1 and box 4 was a light bulb moment for me. I slowly figured out the minimums and made my way to victory. The geometry of this puzzle was very nice. I wasn't expecting that box 2 was how I broke through after concentrating so long on box 1 and box 4's lines. Amazing job. Great Puzzle!
This puzzle take me almost 38min, but it was very worth it! My main problem was forgeting the king's move rule 😅 after I remember that it got a good flow! Thanks 😊
Brilliant and oozing elegance! Loved this
Wonderfully said!!
Took me 22:57. Brilliant puzzle! Thanks Scojo for the set!
Rules: 05:45
Let's Get Cracking: 07:22
Simon's time: 31m45s
Puzzle Solved: 39:07
What about this video's Top Tier Simarkisms?!
The Secret: 5x (23:15, 23:17, 25:22, 25:22, 25:27)
Three In the Corner: 2x (36:45, 38:26)
Maverick: 1x (07:36)
And how about this video's Simarkisms?!
Sorry: 7x (01:38, 02:14, 06:11, 09:24, 11:52, 17:05, 31:00)
Obviously: 6x (05:48, 12:11, 23:52, 31:03, 34:30, 38:18)
Beautiful: 5x (00:19, 15:02, 19:05, 20:01, 20:33)
Hang On: 5x (13:56, 25:51, 26:31, 27:29, 27:30)
Ah: 5x (19:54, 24:15, 33:11, 36:53, 38:26)
Triangular Number: 4x (17:17, 17:17, 17:50, 23:20)
Lovely: 3x (28:51, 28:54, 39:53)
Gorgeous: 3x (39:25, 40:01, 40:01)
In Fact: 3x (21:31, 21:31, 33:45)
Brilliant: 2x (39:08, 39:08)
By Sudoku: 2x (16:30, 37:02)
Alexa: 2x (02:09, 02:14)
What Does This Mean?: 2x (24:02, 24:40)
Weird: 2x (22:51, 32:25)
Goodness: 1x (26:13)
Bother: 1x (36:03)
Apologies: 1x (33:43)
Nonsense: 1x (22:29)
Clever: 1x (17:44)
In the Spotlight: 1x (38:28)
Stuck: 1x (01:32)
Bonkers: 1x (02:14)
Shouting: 1x (04:52)
Approachable: 1x (00:57)
Of All Things: 1x (37:54)
I've Got It!: 1x (19:00)
Box Thingy: 1x (22:58)
Snake: 1x (01:07)
Intriguing: 1x (00:43)
Have a Think: 1x (11:23)
Cake!: 1x (04:59)
Most popular number(>9), digit and colour this video:
Twenty Eight (12 mentions)
Two (49 mentions)
Purple (10 mentions)
Antithesis Battles:
Even (51) - Odd (41)
Column (15) - Row (13)
FAQ:
Q1: You missed something!
A1: That could very well be the case! Human speech can be hard to understand for computers like me! Point out the ones that I missed and maybe I'll learn!
Q2: Can you do this for another channel?
A2: I've been thinking about that and wrote some code to make that possible. Let me know which channel you think would be a good fit!
Could you explain the 3 in the corner bit
@@ezracohen6020 it’s a play on the lyrics of “Losing my Religion” by R.E.M
@@Asentro76 oh, ty
Delightful puzzle!!! We have sun here for the first time in days!! Happy day!
Yay...about time the sun came out...😁 🌞 ☀️
@@davidrattner9 🌞🌞🌞🌞🌞
I never even thought of going through the parities, which I guess made my solve way way way longer than it needed to be! 58 minutes for me. Spoiler...
*
*
So I started off by working out that the minimum number you can get in the seven-length line (box 4) is 28 (1+2+3+4+5+6+7) and the maximum you can get in the four-length lines (box 1 and 2, which must have the same total as box 4) is 30 (6+7+8+9). However, if it IS 30, boxes 1 and 2 won't work (since there's no way to put in the even numbers correctly with the king's rule). Therefore the line going through boxes 4, 1, 2 and 5 must have a total of 28 per box.
...Yeah, that's the long way of doing it. Bearing in mind that I hadn't worked out the parities of anything yet (I think I started with the deduction that Simon made at about 21:00, and then worked out that there had to be four odd digits in box 4 on that line, therefore making the parities on that line trivial.)
*6 unfilled digits remaining*
Simon: I shouldn't say it but I feel like this is finishing for me.
😂 You don't say?
It's been observed before that Simon will say he thinks he's getting close to the end when he's got fewer than 8 or 10 digits to go, and Mark will say he thinks he's finishing up after he's placed the first one or two. 😹💛
Simon definitely likes reverse logic! Sum of two digit with different parity would always be odd, thus the single digit is odd, and here we start with parity
I tried this puzzle yesterday, and got stuck after around 35-40 minutes (don't have the exact time). I thought about it overnight and made a discovery about the connected line segments in boxes 1 and 2, and how they couldn't all contain the same digits. So I came back today, restarted the puzzle, and with that discovery I was able to finish in 9:07, solver number 7235.
Of course, I couldn't have done it in that short of time if not for all the regular work I did on it yesterday, and the thinking about the puzzle overnight.
That was a very fun puzzle. Took a second to get into the swing of things, using the King's Move to rule out certain number placements and combinations, but then it starts to flow. A really lovely solve.
I always think of the king's move restriction as kind of weak but it solved so many cells in this puzzle. The king cannot be underestimated😅
Nice, fun approachable puzzle. Finished in 37:45 after forgetting the parity line rule for 5+ minutes.
Just over 40 min for my time, this one was rather enjoyable, thank you for posting this one.
Awww! That rotten steamroller! How dare he make me think that Maverick is in the air. 😩
(Hearing Maverick always makes me happy. 😊)
00:22:46 for me. Loved the combination of the simple rules! Kind comment.
Finished in 26:38. Loved how the parity lines solved the parity themselves and I didn't remember the king's move constraint until I was stuck after figuring out the parities which then lead to the solve.
Fun puzzle!
Took me forever but I got there without help, thanks to this channel.
I use "E"vergreen for even, and "O"range for odd. Regardless of the shades you choose, this is a fun coloring puzzle!
I should have parity colored sooner, I would have caught some things faster. 😅 Still managed to finish in 27:43 (conflict checker off), what an amazing puzzle from Scojo! Loved it.
I didn't start at the bottom one, but at the top left where I deducted the same thing with 7 digits leading up to 4, and eventually 5. Then I started thinking about the secret, deducting that the remaining 2 digits had to be either 15 or 17, after checking the lowest thing the 7 digits could add up to, and the highest thing 4 digits could add up to. But that never got me anywhere. I should have stuck with parity distribution.
The way your brain works is weird. I too started with the lines at the bottom, but whereas you deduced that one of the cells on a 2-cell sequence must be even, so the neighbours had to be odd, my logic was much more direct - that the 2-cell segments had to have opposite parity, so the sum had to be odd.
My next move was the long line, which had to be either 28 or 30. It couldn't be 30, because R2C3 sees all of the line in box 2, and R2C4 sees all of the line in box 1. Therefore, there has to be two ways to make the sum in four cells, and there's only one way to make 30.
Once you spotted this, you went about it your usual backwards way. The two cells not on the line in box 4 are 89, therefore 8 and 9 are in C3 in box 1, and they can't be in R2 because that sees all of the line in box 2. This places both 8 and 9 in box 1, and the 9 in box 2, and the 8 and 9 in box 4, and fixes most of the line at the bottom.
The weird way your brain seems to avoid low-hanging fruit means you miss the obvious flow. If the natural flow is steps 1 to 9, you start at step 2, then work back to 1, then because you've already done step 2 you can't see what step 1 gives you, you scan around for a new beginning, possibly jumping ahead to 5 and back through 4 to 3, and then you're struggling to find step 6 because you're looking for the effect of step 4 (which leads to step 5), not step 6. You end up solving steps in 21654879 and miss the lovely smooth flow from 1 through to 9. Take the obvious, low-hanging fruit first and see where that takes you, even if it means doing sudoku. You're missing out on much of the beauty you love so much.
Took me 37 minutes because my tired brain utterly noped out on working with more than one rule at a time this evening, so I just alternated which one I could remember....
So when I sat down with this puzzle for the first time earlier today, I don't know what I did, but I suddenly realized that r4c5 had to be a 2 before I had put in any other digits, and got a whole lot of deductions as a result of that. And soon after that, my brain went "Noooooooo, what are you doing? you don't know that's a 2! HOW DO YOU KNOW THAT'S A 2???" and I completely lost my focus and put the puzzle away. Decided to try it again now, and this time, my solve was much closer to how Simon approached it. Weird.
Brilliant puzzle.
33:15 It's amusing that Simon forced himself to find another justification to put a 2 in R2C9 rather than just use the logic he just uncovered that meant if the 2 is in R3C9 then that would put too many odds in Row 2.
Good one, thanks.
Super hard for me but finally done! Took me over 2 hours. 02:21:28 Amazing puzzle!
lol with 6 digits left he says "I shouldn't say it but it does feel like it might be finishing for us."
When i seen video is like 40 min i wasnt expecting that i am going to get only 30 sec slower time than Simon is getting
26:53, surprised how quickly this one went for me, especially considering I put the puzzle down for a little bit and "remembered" the rules as being anti-queen when I came back to it and had to undo some work.
As a very amature puzzle solver it was a good feeling to solve this one without following Simon's break in steps.
I'm just annoyed that I completely forgot about the region sum line part of the rules after using it to get the top boxes mostly done
I forgot the anti kings move rule. I actually made it quite a way with out it. Then a review of the rules and I was off.
35:30 for me. Nice puzzle!
Cute. 25:48, including a false start.
1:11:02 - Nice
I found it really difficult... Until I remembered there's King's move rule.
I did the same thing. I was sitting there staring and thinking "how is this only 2 stars??" And then I reread the rules.
11:30 for me. Very nice puzzle!!
24:28 for me - I started out and got 10 minutes in before I realized I made a coloring mistake and started over. So I took about 35 minutes.
47:42 for me. Struggled a little to find the break-in.
What an odd puzzle ...with the parity and king
Rules inplay the only sum lines that gets worked on are the long one and the B789 one
The B25 one u just need to know it exists but curious if u do t need it.
He absolutely wrote that.
was stuck with only one digit for over an hour... then I remembered that there was a kingsmove restraint 🤦♂ 94:05
39:22 for me. I haven't been focusing well lately.
Am i the only one who thinks the top right lines look like Slurms McKenzie?
It so funny that you keep setting off Alexa.
Finished in 22:09 with help from a killer sudoku calculator. It was easy once I got the sums figured out.
66.32 for me. I started in the top and when I came to the bottom I got stuck because I didn't realize C3R9 was C4R9 + C5R9 + C6R9. Oh boy.
18:49 for me, I'm surprised!
First?
Popped in just now by pure coincidence. Well, perfect timing, just about ready for bed
maybe for comments but for views it showed for me no views and no likes.
It´s weird. I start this video, click on the link and solve it by my own. After it I watch the video (or sometimes I start watching, if I look on it for an hour without get find a piece of the puzzle). And I think "Why he took so long, doesn´t he see r9c3 can´t be a 9 anymore." (at 24:30) BUT: You needed around 32 minutes. I needed 1 and a half hour.
Also I noticed very early (around 3 minutes) r3c5 and r6c6 are same digits, cause they were only digits not on a row in both boxes.
64:30 two party hats please
Alexa really heard "a letter" and thought you said her name.
You read very well.
12:36 for me. This one just flew by :)
11:35 for me.
27:23 for me
42:33 for me
nice puzzle
17:32
The parity restriction makes for some very powerful deductions. Some very clever building crammed into those few lines.
16:48, but I restarted due to misjudging the parity of the bottom line.
At the start, you know that r3c5 = r6c6.
29:45 Why does Simon place a 2 there
After, at 31:07, he tries to claim it was simply a missclick. However, I have trouble believing even Simon can accidentally press a 2 when going for a 6 🙂.
I'd put it down to momentary carelessness, due to going too quickly. He was just expressing the thought that "sometimes these odd-even parity puzzles ... can go quite quickly". I guess he was attempting to demonstrate just how quickly they could go - and as a result, he slipped up. At least he caught it fairly quickly.
What is going on with those blue lines? Why are they blurred?
My guess is there are 2 separate constraints for the same lines, the bold line maybe represents the region sum and the fine darker line represents the parity line.. just a guess...
51 minutes
49 minutes 16 seconds
Rather more blunders and typos than usual. Maybe Simon needs to get more sleep.