Do You Know Your Odd Numbers From Your Evens?!
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- čas přidán 31. 03. 2022
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Rules:
Normal sudoku rules apply. Each line has two circles. One of these circles gives the total number of odd digits on the line, and the other circle gives the total number of even digits on the line. Both of these totals include the digits in the circles. For each line, the solver must determine which circle counts the even digits and which counts the odd digits. Digits may repeat along a line if allowed by the other rules. Digits in the cage sum to the given total.
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In parity puzzles, I color like mad. I also get hung up watching when coloring isn't done... it's like watching an athlete put on shoes without socks. They're still faster in every way, and there's no doubt they know their way around footwear... but... just put on some socks.
This hurt my soul so much.
Agreed. For example, because of the 5 in a circle of the line in row 6, you immediately know the two digits _not_ on the line are even. Simon kept trying to figure out parity of cells _on_ lines, which is often impossible. Overall, I couldn't believe that he was not immediately colouring all the odds and evens. I did, and they helped me fill in a bunch of parity cells along the way.
Big mood! I took much much longer to do this one, Simon's solve was much smoother, but I was thinking for ages "Colour the cells in!!!"
I was trying to figure out why this took Simon 30 minutes...then I watched the video and saw how he did everything to avoid doing Sudoku and delay filling in all the 3's and 4's...
He also missed the 18 cage in box 9. 18-1=17 =9,8. If the 2 green cell are even they must be 6, 8 so you end up with two 8s. Therefore green must be odd.
Simon at times concentrates soooo much on one clue that other useful information just goes past him. Mind you this terrier approach to 1 tiny area means he solves these mad sudokus whereas I look with jaw on the floor.
Simon doing sudoku in a sudoku puzzle? You must be mad! Lol 😂
Around @27:30 while C1R4 did have to be odd, it wasn’t because of the parity of the 9 cell line (it could have been 4 odd cells and 5 even). However R4 had 4 even digits already.
Nice rule set even if it sent me and Simon for a spin a couple times
Exactly! I was looking for this! These guys are truly amazing though, and Simon is a beast!!
18:48 for me! First time I've ever solved a puzzle faster than Simon or Mark. Love this channel!
"Ex falso quodlibet" gave me a bit of a chuckle. It refers to the principle of explosion in logic. It means "in falsehood, anything can follow"
Essentially if a contradiction occurs then any proposition can be inferred, this includes the propositions negation.
That plays rather well with the way this puzzle works!
Fantastic solve!!
Thanks for the explanation!
Makes sense given what I found.
Completed the puzzle ("Tick" says "Looks good to me") but checking I find Box 3 between 1 and 3 all odd (7&9) (which is where I think I made the mistake) and between the long left/bottom 5 and 4 line I have 6 odd & 4 even. [The "Tick" check didn't pick up but I wouldn't expect it to.] Comparing with Simon's solve inevitably there are more different cells besides that but all my other odd/even lines are valid though many are different particularly the left corners where, frankly, anything goes.
12:23 "Well that doesn't actually help us" - it's a small thing but at very least you could shade the two cells in row 6 not on the line as even, since you know the five odds are on the line...
That had me going as soon as he put the 5 in the row. Later on he also missed the 68 X-wing in boxes 5 & 6 making the missing evens as 6 & 8. It's his absolute concentration that means he can solve all these diabolical sudokus that appear on the channel. It also means that the 'obvious' is missed making it harder at times. But, where does one look? There's a lot of often empty real estate (or heavily pencil-marked) that makes it difficult to know where to look. It doesn't help matters when there are (right now) nearly 5000 pairs of eyes scanning/have scanned the sudoku - Simon has only 1 pair... (which seems to scan only 1 cell - not its neighbours).
He didn't seem to want to colour any cells that weren't actually on parity lines (although one of those two was on a different line). I couldn't really understand why. It made spotting when the full compliment of odds or evens was reached in a row, column, box so much easier, at least for me.
That was fun! Rather than colouring the whole grid, I started off by colouring all circles yellow, then I stuck to just colouring the circle cells to mark whether they were counting the 🟧 odd or 🟦 even digits on their line, and then deleting the colours completely once a line was fulfilled. I find this kind of technique very helpful for being able to spot at a glance which clues can still give me further information.
27:15 - a premature deduction there - you don't know that the 9-cell line has 4 even and 5 odd, because it can have repeats. It could be 4 odd and 5 even, with the two remaining cells in box 4 being even. (Of course, you can very quickly disprove that because all the even digits in row 4 are taken, but you do need to take that step!)
Yes, also at that point r6 having 5 odds already forces r6c1 to be even, so actually the parity considerations of the line aren't really necessary, the ones for rows are sufficient.
He SHOULD have had the information to get this, but yeah, he later realized that row 6's evens were forced, so didn't yet know that. He missed the row 4 thing entirely.
I think it might have helped to be more diligent about coloring parity, even for cells that he already knew the value of.
This is my 200th solved puzzle. A big part of the 200 are GAS-puzzles - but still pretty happy about the 200.
I had to restart it a couple of times but got it right in the end. Taking it as a win! :D
And now to watch the video.
[23:30] “So, if in doubt, try sudoku.” Words of wisdom!
I'm surprised that Simon didn't finish the coloring.
Simon: "Well, it is not a sodoku puzzle, which is why it is not on the channel."
Does that mean that The Witcher, Baba Is You and Wordle are all sudoku puzzles?
And the last Cube? or the Witness?
Those are all fine examples of "Schrödinger Sudoku" :P
i remember "quodlibet" from music lessons at school as something you might nowadays call a "mashup" for vocals - mixing two or more known songs together, in a more or less fun and musically interesting way.
A lovely puzzle today, which I managed to solve. Just the right amount of difficulty for me! If anything, Simon, you were making life difficult for yourself by thinking the puzzle was more difficult than it actually was.
Had to chuckle at 21:21. The plaintive “is that helpful” had me thinking “yes, but afraid you already disambiguated the odd / even line between the 1 and 6 in a much more convoluted fashion that I wouldn't have found in a million years”… Never change please Simon. 😊
When he colors r4c1 and r6c1 cells as an even-odd pair because of the circles clues, they may be both even, although this is found impossible because of the four even digits in row 4, for instance
I notice that as well!
Rules: 03:29
Let's Get Cracking: 05:07
Simon's time: 24m32s
Puzzle Solved: 29:39
What about this video's Top Tier Simarkisms?!
Phistomefel: 2x (02:41, 02:56)
Bobbins: 1x (10:40)
Three In the Corner: 1x (08:58)
The Secret: 1x (29:56)
And how about this video's Simarkisms?!
Ah: 14x (05:35, 07:01, 08:45, 09:24, 09:51, 11:43, 14:00, 14:20, 14:58, 15:34, 16:38, 24:47, 26:53, 29:06)
Beautiful: 6x (07:50, 16:21, 19:07, 19:11, 22:33, 29:41)
By Sudoku: 6x (13:48, 22:26, 23:38, 26:47, 28:20, 29:17)
Clever: 3x (19:13, 22:24, 27:45)
Hang On: 3x (11:19, 12:29, 15:09)
Obviously: 2x (07:36, 13:30)
Nature: 2x (13:26, 30:13)
Sorry: 1x (09:54)
Elegant: 1x (29:41)
Approachable: 1x (00:53)
Full stop: 1x (14:48)
Plonk: 1x (26:42)
Losing my Army: 1x (25:30)
Have a Think: 1x (04:07)
Most popular digit and colour this video:
Two (62 mentions)
Orange (8 mentions)
Antithesis Battles:
Even (60) - Odd (59)
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 put the link to the puzzle at the top of your message? That would help.
@@leonhardeuler675 it's already in the description, no?
@@typo691 Yep, but you have to scroll to it and then you have to work out if it's the patreon link and I'd like it to be automated so I don't need to solve a puzzle to get to the puzzle.
I finished in 24:05 minutes. This ruleset is ridiculously fun. It's quite restrictive for a simple rule, especially when the lines are straight in a row or column. I went through like a mad dog and I didn't even color. I usually do color, but I felt so strong that I forwent it. Also, I beat Simon's time 21 seconds and it fells good. I felt like I earned with how fast I was going. Great Puzzle!
I’m surprised that Simon didn’t immediately start colouring all squares given how much he likes to colour. I found that it helped my solve.
I was sure I couldn't do this, but I'm glad I gave it a try. It was really fun, and not at all difficult, which is a change for me. Nice new concept.
12:17 for me. I thought I might be colouring this one, but never really needed to.
Completed in 19:52, definitely a fun puzzle! I loved how things bounced around as I solved it, and while I took a slightly different path than you, Simon, I still noticed a lot of similar deductions, which means I think I'm getting better at these crazy variants. :D
At 24:40, Simon determined that a 6 was restricted to two cells in box 9, and pencil marked them. One of the two cells had already been determined to be odd, of course, but no need to pay attention to that. :) He figured it out soon at least.
Simon did make one mistake, though, but it was fine. He used the parity of the 9-cell line to determine the last cell had to be odd, but it didn't. That line could have had 5 evens on it, because the digits could repeat. It didn't matter, though, because the box had already used up all evens, so the cell definitely _did_ have to be odd.
Solved this in slightly under an hour - I was encouraged by the relatively short length of the video, how much was going on in the grid and the fact that I immediately spotted how useful the short lines would be. I was pleasantly surprised to find out that this puzzle required quite a bit of sudoku, which I'm better at than the crazy leaps of logic Simon specialises in! Realising the importance of the intersecting parity lines in r4c4 was a lovely piece of logic. A really fun solve all around!
Hey Simon, thanks for all the great content! I would love in parity puzzels if you could color all cells orange or blue. It makes it easier to follow your logic when counting parity etc and would hopefully improve the viewing experience
It also would have sped up his solving!
Interesting rule set - it turned out to be a lot simpler than I was expecting. Makes a change!
Lovely rules set! More of these please.
I was one of the recommenders for this puzzle. I had a lot of fun solving this one. It's an interesting rule set
Nice! Took me 1.41 Simons where a Simon is a unit of time equivalent to the length of the video. Excellent! Thanks for the puzzle, ExFalsoQuodlibet!
Thank you so much for this treat, took me slightly over 107 minutes to solve. Love the channel, really happy I found it. Warm regards, Sheila.
This is the first CtC video puzzle I completed 100% by my self. I had to re-start twice because my brain kept insisting that the 18 cage with a 1 needed a 79 pair as the other digits. :D
You can also get green's parity straight away with box 9. If green is even, then box 9 has all 4 of its even digits. But what then of the cage? It adds to 18, an even number, but we have to add three numbers that are all odd to reach that total. Impossible. Greens must be odd.
25'07". A solid puzzle, though I felt in a lot of cases that the clues merely ended up being 2-space killer cages separated by some distance
Loved this. I solved the puzzle on my own, then watched Simon's much more elegant solve with great enjoyment. Thanks for the puzzle, ExFalsoQuodlibet, and congratulations on your debut on the channel. I really enjoy parity puzzles, especially those that don't devolve into two separate puzzles, one for odds, and the other for evens. This one really required the whole grid to be part of the thinking. Ok, now to see what Mark had to deal with this April Fool's Day ... 😊
Love this puzzle! Great solve Simon!
At first I didn't think I could solve the puzzle without taking three or four times of Simon's time. But I did it and it ONLY took twice as long as Simon. 🤣🙂 A very exciting and beautiful puzzle.
Are we all just ignoring the fact that Simon said Kinky at 10:45
Twice 😆
Agree with many others here, it was a suprisingly easy puzzle, but still a very good puzzle. There was no coloring needed and it had a very nice flow to it.
44:37, not an amazing time but I'm proud of myself for doing it without any help
I liked this puzzle very much. Thank you!
Have they mentioned when they would stream the last cube again? I’d really love another session
That worked out really well using the odds and evens.
Really nice job
My friday needed this!
18:24 for me - I was almost 20 minutes in when I realized I must have screwed up something near the beginning and started over. It only took me a couple of minutes to find the break-in, so my time if I didn't make a mistake would've been 20-21 minutes.
At 19:30 you can also observe that the 18 cage in box 9 must contain an 89 pair. That means that if the line of green cells were all even then there would be too many even cells in box 9, ergo the green cells are all odd.
20:01 finish. Very interesting ruleset, definitely enjoyed it!
35:32, I had to keep reminding myself that just because a circle is orange (odd) doesn't mean it refers to the number of odds (and vice versa with evens)
Lucked out into the parity of the 9-cell line around the 27-minute mark. Can easily done by inventory on row 6, then box 4, but not by 5 odd - 4 even as you said. :)
27:11 and usually I'm way slower than the video, this one just clicked very easily with me.
I wouldve loved for Simon do draw more consclusions from the vertically or horizontally intersecting odd or even Digits (by sudoku) when it came to concluding which Numbers in the circles refered to the odd or even digits. Thanks for the Video nevertheless!
19:10 another way to determine the parity of those green boxes. The killer clue in box 9 requires an even and an odd (in addition to the 1) to make 18. If the green boxes were even, that would put 5 even digits in box 9, which there can’t be. Therefore the green boxes are odd.
That's how I did it too.
Another way of finding the parity of these green cells is by doing sudoku and placing the 3 in box 2 lol
But this was definitely more interesting.
@@Tomf1234567890 That's how I saw it too, but only a few seconds before Simon saw his logic.
12:52 for me. Very nice idea, I’m also surprised it’s not a more common ruleset.
The "Orange" for Odd and Blue for Even interferes with my synesthesia, and I most certainly have to have it the other way around (because blue says odd to me and orange / red says even, loud and clear)
Great puzzle - had a go before watching and was initially unsuccessful, started watching and got a tip from Simon right at the start that let me go back and complete it - if you're in a similar spot it may help you...
...
...
...
...
...the numbers in the circle add up to the the number of cells on the line...
Seems obvious in retrospect but I didn't get that initially. After that... start colouring!
Quodlibet (sp?) is a music term. Professor Peter Schickele wrote a piece with that title for his first PDQ Bach collection.
On tracing paper, one would presume
@@sarahclark9256 It's probably on CZcams somewhere.
There's a first time for everything in partity sudoku. Today, I ignored colouring the cells on the lines, and only flagged the circle cells appropriate to the parity they represent, not their own numerical value. Hence, my 3 and 4 in R1 were blue and orange, respectively. It was the only way, ironically, that I could keep straight what the goal was.
Took me 32 minutes, a nice puzzle for a Saturday morning.
31:52 (plus ~7 for a false start where I missed that the bottom 4-cell diagonal could be 2/2); that's probably the closest to video time on a Simon puzzle I've gotten.
29:41 for me. Great fun! At first it was daunting, especially the lines that could have duplicates-but everything started falling into place when I observed that the circles on each line had to always equal the same number (duh), and I was off to the (plodding) races. It took me longer than it should have to realize that the little line in box 3 couldn't be 2 2's, but I did eventually get there, haha.
30:18 for me. I definitely could've been faster (if I'd realized earlier that 6 and 7 were right out of most lines), but I'm happy with that time.
32:47 for me! One of the smoothest solves I've had recently.
21:49 for me. An easy one this time. Could have been much faster, but took me a while to spot a 7 at the end that I needed to finish it off. In between lines seem to be the current flavour of ctc lately.
14:03 ... a most interesting ruleset.
Nice puzzle!
The green digits are easily seen as odd because the 3 in box 2 is placable in a green square by sudoku. But Simon does like to avoid using sudoku in sudoku puzzles.
Ngl I kept second-guessing myself on this one because I got too caught up with the parities but as soon as I just started to focus on odd/even numbers it was quite easy xD
Simon, you successfully guessed r4c1 was odd. The other possibility is r4c1, r5c1 and r65c1 were all even [five evens four odds.] R4c1 being odd could have been determined by noting all the odds were consumed on the arrow on line 6, so both r6c1 and r6c2 were even, [ and were a 68 pair after the 4 and 2 were placed in box 4,
@19:26 the 18 cage was another option to resolve green
39:23 for me and I enjoyed every moment. Lovely little puzzle, that one.
A quodlibet is a musical 'joke' where melodies are combined simultaneously. For a wonderful example, look for "the Unbegun symphony" by Peter Schickele" perfect listening for April Fools.
Yahgh. My mind just would not wrap itself properly around this one. I had to restart four or five times. I finally completed it with my final run taking 35 minutes, but I think I lucked out with the corner parity even then.
A fun puzzle, but a bit of a brain-bender.
Three restarts for me and then a bit in the middle where I had to work out the same problems as I had at the beginning. 50:07 total (including the restarts). I liked the rules by the end - just had to remember that the parity of the circle digit has nothing to do with which total it was counting.
@27:34 "This has to be odd using the parity of the 9 cell line." Incorrect. It had to be odd because box 5 already has 4 evens. You earlier made an assumption that the 9 cell line's odd digits were 5, but that was a baseless assumption that only happened to be correct.
Took me 37:59. Fun rule, I don't think I played one like this before! It was a little weird, since I decided against coloring odd vs even digits, as I usually do with parity puzzles, because I thought that might get confused with my coloring to differentiate the circles
Dude, I think you would have seen so much of this so much earlier if had consistently kept up the parity coloring.
The 4 blue 5 orange tells so much of the story in each row, column, block.
18:58. Quite an easy day fir april fools. But loved the flow if this one.
I'm on your heels: 32:57! First one I've done by myself in ages.
My clear time was 19:58 but it was after a restart. I had a failed attempt before which took me about 10 minutes before I reached an impass.
A very cool puzzle indeed! Probably it may be called the best puzzle that ever appeared on CtC, as always. ;-) Although it must be said that the imcomplete colouring made it sometimes a bit difficult to follow. E.g. the parity of r6c1 and r6c2 could have been disambiguated earlier.
16:58:
"All those digits have to have the same parity."
"So, what's that telling us.?"
[Simon said]
What that "1's" telling you is there's an 8,9 pair in the 18 cage
[And there's ALREADY 2 EVEN digits in box9 ]
So two more Evens on that diagonal in box9 would be TOO MUCH.
THOSE SIX CELLS for the 6 on that DIAGONAL are ODD in other words.
[You'll see it at some point]
Better with the numbers shaded/colored Odd and Even though.
[A blue could aways be counting odds -- and vice versa -- BUT EASIER TO KEEP TRACK that way]
Just my thoughts, anyway lol
[[It was needed SEVERAL TIMES -- I can't even remember lol ]
Cheers ;)) 😂😎☕☕
Oh this was such fun!
21:06 for me. Interesting new ruleset.
Wonderful puzzle idea and solution! …not corresponding with the fool’s day
18:02 for me. First sudoku I did using mobile.
Simon you are a brilliant man, but how do you ever fill in a 6 notation in an orange cell (24:37) it makes me laugh cry and shout ;)
Glad you spotted that one quite soon!
This one took me 3 hours and some change. I hope to be as fast as you one day
14:35 for me. this was quite easy. just follow the line of clues.
Simon could have placed the 3 in box 2 much earlier than he did, deciding the parity of all those cells, but as usual found another way.
Sudoku is Simon's last resort method of resolution. Much more entertaining! :D
Solved in about 26 minutes, less than the video time. Very rare for me.
Fun little puzzle. 20:02
Ah yes, the time-tested method of using Orange for odd and Blue for ... bleven.
Somehow, even when the rules are clear as day, I find a way to misinterpret them. Despite the absolute lack of ambiguity in "One of these circles gives the total number of odd digits on the line, and the other circle gives the total number of even digits on the line," while solving I assumed that a string of 5 odd digits with a 5 at both ends would be valid. 🤦♂️ Needless to say I got horribly stuck. On about the fourth rules re-read the penny finally dropped.
I opened this up, and walked away from it without getting as far as the 3 in box 4. Came back later and did it over a couple of slices of pizza, so... not too difficult.
At 12:18 abouts
I'm gonna finish your sentence for ya lolx.
You approx:
"This 5 must count the ODD digits, [because there are only 4 even digits.]"
Me:
So, those other two cells in row6 MUST BE EVEN [BLUE].
[Yeah, Simon, you were being a little dim on that one -- I COULDN'T do some a' these without ya though]
[ COLOR 'EM BLUE when you finally see it though].
Nice; ) 😂😎☕
I wept tears for poor r3c4's parity being neglected for so long.
quodlibet, Latin for "whatever you wish"
I drank a bunch of mountain dew and had several deductive explosions last night....
nice puzzle However....The rules state that the solver (moi) must determine which circle counts the evens and which counts the odds. In the line bounded by r5c8 and r8c5, both digits are the same (2). So which 2 counts the evens and which counts the odds. Or is this an example of the Copenhagen Sudoku or the many worlds Sudoku? Calling Dr. Schrodinger!
Why is the circles in r2c5 and r5c2 both odd? Isn't that a mistake? I was well on my way to solve when I noticed. I backtracked and watch Simon not giving it a second thought.
Didn't I understand the rules?
27 min. Neat concept.
Simon regarding the 4 and 0 option since the digits on the circles also count... is 0 a odd or even? and my mind bronken early Hahaha
0 is even, by every meaningful mathematical definition of odd/even.
@@stevieinselby Yeah I remembered shortly after... my mind still broken, so tired today
I think this ruleset is called Odd-Even Bridge or something.
Done in 30 as well!