Phistomefel Recommended This Puzzle To Us!

** TODAY'S PUZZLE **
When Phistomefel recommmends a puzzle to us we listen! It's called Anti Divisor Fillomino and it's the work of SudokuExplorer. And, of course, it's brilliant!
Play it at the link below:
app.crackingthecryptic.com/su...
Rules:
Divide the grid into regions of orthogonally connected cells. Each cell should contain a number equal to the size of its region (ie the number of cells in its region). The size of any region must not divide the size of an orthogonally adjacent region.
NB We made a tiny change to the rules above compared to those in the video for the sake of clarity: the word "number" has replaced "digit" in the second sentence.
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As well as the Phistomefel and Jay Dyer extravaganzas, Simon's solve of Magnus Josefsson's new puzzle Castle Wall Yin Yang #1 is now available as a bonus video. You can play the puzzle at the link below (and the logic-masters link contains an example):
app.crackingthecryptic.com/su...
logic-masters.de/Raetselporta...
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We've also released a FREE app full of handmade puzzles to celebrate reaching 500k subscribers - simply download the Cracking The Cryptic app on Android, Steam or App Store and then select the 500k pack. We're streaming a playthrough of this app and you can watch all seven episodes
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[@zimmicks3170]

"The 5 and the 9 can absolutely touch each other, so we don't have to worry about shenanigans there." Simon, you would be shocked at the shenanigans an odd couple could get up to.

[@emmbeesea]

😂😂😂👏👏👏 I can't believe I've never heard this one before. _tips hat to you_

[@lizzyvv447]

Not to mention the 6 and the 9!

[@Hybban]

@@lizzyvv447 It's only a half-odd couple though.

[@matsbrunetti9797]

Nothing better than chilling on my bed after a busy day watching Simon solving yet another beautiful puzzle. Wow this channel is just too good!

[@bradleyreed8876]

The 17 region does not have a "digit" representing its size. 😞

[@richardfarrer5616]

I got close to the end of this one then thought I'd messed it up as i couldn't put a *digit* in the remaining cells. The rules should say that each cell contains a *number* equal to the size of the region.

[@amroshIdreesh]

Same here .. the puzzle was very satisfying until that point

[@felixfunk6816]

Same, I thought I messed up, too

[@illdie314]

Had the same thing happen to me, I assumed I made a mistake and gave up to watch Simon do it.

[@ericslavich4297]

Yep, that's what I came to day. Digit and number are not the same.

[@Jumprocks1]

I feel like the rules shouldn't use the word "digit" since that implies a number between 0 and 9.

[@emsouemsou]

Truth be told even if it said "number" I might've missed it because I would have assumed that it's one of the numbers I can enter on the app, i.e. 0-9. Although technically it would've been my fault then and not the rules'. I'm still a little uncomfortable for puzzles where double-digit entries are required like the X-sums ones where you have to deduce the sums.

[@JohnADoe-pg1qk]

Perhaps that's the reason why it's phrased "should contain" with an added explanation.

[@dertigerbauch]

Exactly what I thought... The solution feels wrong.

[@cherriespancakes]

Thank you. I restarted 3 times because I had made this assumption before giving up and coming back to the vid. I can actually try again!

[@danconnolly504]

Yeah, I was going insane at the end trying to solve it, had to watch for the solution and felt a bit let down :/

[@k1llwizzy]

was attempting to solve this, broke my mind over the 17 region, since i assumed there would be a limit of 9 as a digit. watched this video and it resulted in even more frustration actualy.

[@sxmchn]

Got stuck about 3/4 of the way in, cuz I kept thinking in Sudoku rules 1 to 9 digits. Came to see Simon do this and every time I was like: "That's what I did so how am I stuck now". Until I came back to big brain Simon to realize the Fillomino CAN be greater than 9 dummy. Then I could finish it. What a great puzzle from SudokuExplorer and thank you to Phistomefel for suggesting it.

[@romanpriborkin]

The rules say "a digit". Is 17 a digit? Which base are we using?

[@francoisduez601]

An octodecimal base apparently 😅

[@ib9rt]

Very upset by the rules saying "digit", as mentioned by other people too. "17" is not a digit, it is a number, or a count. When I was faced with a 17 region at the end that could not be divided up I assumed the puzzle was broken.

[@gisopolis77]

I guess when it says "should contain a digit" it's only referring to the digits that are given on the grid

[@pouljensen2789]

IMO it should be made clear when commonly assumed rules (using digits 1-9) don't apply. Trying to solve a puzzle using an impossible rule set tends to ruin it.

[@trisha2584]

Love colouring puzzles but got stuck and had to watch Simon's excellent video; I hadn't realised that numbers higher than 9 could be used

[@spprogmaker4624]

yep same. I think the instructions were pretty misleading given they mentioned adding a 'digit' to each cell. Would have been clearer if it had said 'number'

[@haniapopowska8966]

The instructions do not allow it. I find this solution at odds with the available ruleset.

[@bibliopolist]

@@spprogmaker4624 Simon quite often doesn't differentiate digit and number, which tends to be a bit misleading.

[@sxmchn]

Same that's where I got stuck.

[@olvtf7926]

Right-very frustrating puzzle for that reason.

[@Celvinbell]

I'm so glad you made this video, I learned how to do variant sudoku's by watching your videos. I've never tried a Fillomino before because my brain struggles to learn through text, but having listened to Simon explain the rules and watched just a few minutes of the solve I feel like I'm ready to go out there and take on some Fillomino's. Thanks!

[@LeTammo]

Just a thought, but "orthogonally connected" could be described as "rooms that could be connected by putting doors on the walls" if sudoku cells are interpreted as small rooms.

[@danielepicone1480]

Wonderful puzzle, solved in 51:32. I would just make the rules are more precise. In fact, they say that each cell should contain a digit, which implies that no region may contain more than 9 cells. This is not the case in the original puzzle ruleset.

[@kindlin]

This also got me. I was able to prove to myself that nothing worked in my final grid with the digits 1-9 and checked out Simon's solve to see what I wasn't understanding, or where I goof'ed, turns out, the rules are just confusing. 76m for me.

[@NeilGirdhar]

How can you have a region of size 17 when "each cell should contain *a digit* equal to the size of its region?

[@HunterJE]

Yeah that's a problem with the wording, usually fillomino rules specify "number" there (that said, it doesn't *explicitly* say we're in decimal anywhere, and any integer can be expressed as a digit if you can pick an arbitrary high base, which is basically what Simon did with the "H")

[@MRafas-ie9zh]

17:20 Simon left out R4C3 to be a part of 9 and then marked as R9C1 as a 9 region. It's like a missed step of deduction that if we did that, 6 region above it would totally bump into 2 or 3

[@ralfrussel1950]

I stopped the video exactly at the same moment to see what I was missing. However it was Simon missing something.

[@srwapo]

@@ralfrussel1950 Well, I stopped the video to see if someone already made this comment.

[@sl8405]

R4C3 cannot be counted (if R5C1 is counted) when counting up the 9's, otherwise there would not be enough for the 6's. You can count only R5C1 or R4C3 as part of the 9's.

[@tremkl]

I weep a little bit for the wonderful Sven every time Simon clicks tick on a non-Sudoku puzzle.

[@tommccarthy8905]

I did love the message when the check function failed.

[@SvenCodes]

😭

[@SipuliSankari]

@@SvenCodes And it is not your fault either. It is just that puzle creator should have stated that if one digit is too low for required number then use letter a=10. b=11,... Then the puzle creator would be able to calculate the correct result check sum and the correct result would have actually validated the result.

[@soulbound11]

I swear, every time i do a fillomino from this channel, i get most of the way through then pull my hair out trying to figure out what i did wrong. Proceeding to watch the video i realize that i can use numbers besides 1-9 and smack my forehead so hard i forget this fact for the next fillomino. Rinse repeat.

[@talkingscribe8898]

Don't blame yourself. The rules specify "a digit" but forget to remind us that it doesn't have to be a base-10 digit

[@blakerobinson4198]

I got so stuck on this puzzle, and gave up like 3 times and restarted. In my head, the cells could only have a max value of 9, had to watch the video to realize that this was just a limitation of the software letting you not put numbers over 9 in a cell, but not a limitation of the puzzle. super fun, i'm going to look up more filomino puzzles.

[@ilonachan]

Took a bit over an hour bc I took the word "digit" too literally & thought each region could be 9 at most. With that error out of the window, it flowed really nicely.

[@wizofoz0605]

ditto. Hwoduthunk '17' was a digit??

[@KanalDerGutenSache]

You did not take it to literally. The setter took it too loosely.

[@peterkelley6344]

Thank you Simon for the Birthday shout out. I was born under the astrological sign of CHOCOLATE. So chocolate will be somewhere on my meal this evening ... To be 100% honest to your followers AND you ... While I believe in 'the person with most friends wins' ... I am not sure who Tinchiza is. I will ask around. Maybe I have an unknown fan. If not ... I wish the 'other' Peter a Happy Birthday!

[@emilywilliams3237]

Happy Birthday!

[@ruthphelps1440]

The large 17 section just feels wrong to me. Maybe it's partly because I would have chosen Q to represent it (17th letter of the alphabet). 🤷‍♀

[@papalyosha]

17 is not a digit. Could you replace 'digit' with 'number' in the rules, please? I tried to solve it with the assumption that each region size should be at most 9. :(

[@bukszpryt_]

exactly. i restarted it at least 2 times trying fo find some flaws in my reasoning, because of this wrong region.

[@pantheracheshire]

Simon, I had a beautiful chocolate cake for my birthday! It was made by my godkids and was absolutely beautiful. Thank you for the shoutout!!

[@MrJulf]

Nice puzzle! Is 17 a digit? I though "digit" means 0 to 9...

[@simon_herts]

I really loved trying this for 40 minutes, thinking I've broken it, retracing my steps multiple times, running in the same problems again, and only then in my despair coming here and discovering that apparently you can write "17" in a cell...

[@andrewchristofi8386]

Nice to see a puzzle using Heptadecimal.

[@franzluggin398]

@@andrewchristofi8386 Heptadecimal isn't enough, 17 would be 10 in heptadecimal.

[@charlesgaskell5899]

@@andrewchristofi8386 actually Octodecimal - Heptadecimal only goes up as far as the digit "G"...

[@hubertnnn]

@MrJulf Digit can be higher than 9 if you use a system higher than decimal but in that case it should be explicitly mentioned, since unless you tell otherwise people will assume "digit" as "decimal system digit".

[@chironchangnoi]

edit: OK I should have waited a few seconds, it's forced by the next conundrum involving the 6 region. At about 18min I think you ignored r4c3 as a possible member of the 9 region, thus forcing that region into r9c1. Now I'm excited to see if you catch that or if it's a lucky guess!

[@Tahgtahv]

r4c3 I think you mean. Yes, it is pretty clearly forced by the 6 and no, Simon didn't really catch it, I think he just counted wrong there.

[@chironchangnoi]

@@Tahgtahv ooops yup you're correct!

[@kevinmartin7760]

I had typed in essentially the same comment, but Simon alluded to it just a but later so I just cancelled it. I was also going to berate him for not filling in the "or some larger number" (or however he worded it) possibilities several times, until I realized the number/digit distinction problem in the rule set meant the possibilities could be quite large and not expressible using center pencil marks (unless you use base-36, which he eventually used in the final result). I did find it a bit tedious, though, how on so many occasions he had to eliminate 2, 4, 6, and/or 8, individually, instead of a sweeping "it touches a 2 so can only be an odd number".

[@afrayedknot81]

Very fun puzzle. Minor mistake in the rules: digit =/= number. Almost messed me up at one point.

[@marusyaknop]

but how? There are no numbers above 9 in sudoku, so everything is a digit by default

[@francoisduez601]

@@marusyaknop indeed, but it is not a sudoku 😉

[@marusyaknop]

@@francoisduez601 Yeah, I just got to that point in the puzzle, so now I see how i got thar comment wrong. I assumed that because digits and numbers were interchanged they wanted to put >9 which is impossible. Turned out it is possible and the rules were indeed misleading.

[@davidmackenzie9701]

But digit has more meanings than that.

[@marusyaknop]

@@davidmackenzie9701 if we're talking about base 10 numbers, does it?

[@davidrattner9]

Fillomono puzzles always a treat to be featured. The intricacy of making all the regions fit together!! When you clicked the solution/check button, did it say Sorry Dave?? That is a new one. 😄

[@MsNosis]

should have been clarified that numbers were allowed to be more than 9... feels like I was fooled even trying to solved this puzzle since it was impossible without going above 9. and it does not feel good being fooled for trying a puzzle...

[@AndreasKungl]

Yes, indeed. Diabolical oversight or repulsive smugness (yadida, I didn't say which base, haha, maths joke).

[@victoriam6569]

I always forget in these puzzles that they are not limited with digits 1-9, ugh. But this puzzle is really beautiful! Thank you for recommendation :)

[@furbyfubar]

It would be nice if the rules on the actual linked puzzle was updated as well. (Even if that means giving it a new URL.)

[@kristenpeggs9913]

Thank you for the birthday shoutout courtesy of my sister, that made my whole day! 😁 I’m enjoying my cheesecake as I watch this video ❤️ I love this channel so much, keep it up!

[@davidrattner9]

Hope you had a wonderful birthday with your cheesecake!

[@th.nd.r]

I learned the word “zugzwang” today, thank you! Also, while “H” is not a digit in hexadecimal, it certainly is a digit in larger bases! It certainly counts as being seventeen in any base of at least size eighteen. So I think your H choice is wonderful! Wonderful setting and solving. I love how beautiful this is in its simplicity. I hope this variant of Fillomino gets a lot more puzzles made in it!!

[@digedag7480]

I didn't recognized that word when Simon said it. I didn't expect it there because it's a genuine German word (I'm German) and I have never heard an English-speaking person use it. So I learned something as well today.

[@aishwaryaiyer7796]

absolutely love these fillominos, they're so satisfying to complete. that 17 region at the end was a nice twist!

[@longwaytotipperary]

Enjoyed this a lot! Looking forward to other videos also! 😊

[@coreycreehan8197]

Finally I thought I was going to be able to do a CTC puzzle. But I was stymied but the fact that regions could be larger than 9. I got to the end and gave up because I thought I broke it.

[@pimanrules]

Lovely video, lovely puzzle. However, (slight spoilers), this is one of those cases where I do wish y'all were slightly more rigorous when rephrasing the rules of a puzzle for a video. The rules in the video/description say, "each cell should contain *A* digit," which is not true to the original puzzle unless we're using a very liberal definition of the word "digit".

[@peterkelley6344]

Hexadecimal is a respected numbering system. So 'H' would be a digit in this case.

[@GrieferCreepertntx90]

@@peterkelley6344 Hexadecimal is a respected numbering system, but hexadecimal is base 16; 17 should be written as 11 in hexadecimal. This would have to be at least base 18 to have 17 represented in a single digit. However, if someone asks you how high you can count on your fingers. You'd typically reply with 10, not 1023. Even though you could represent each finger as a binary digit

[@justmemayel4174]

I've just learnt that I need to watch Simon explain the rules before trying a puzzle, after spending so long on a fog of war puzzle where circled cells had to touch the number of 9s around them, for some reason my brain though it was the number of 9 this cell could see, as in, a few cells away as well, had a few knots in my brain before I realized my logic was wrong! 😂

[@VeritasUnae]

Lovely puzzle! Definitely not in my ballpark to finish today, but I’m glad I could watch Simon’s solve.

[@menturinai1387]

This has to be one of my favorite fillomino puzzles I've seen!

[@hubertnnn]

I was wondering why I failed at the end. I assumed I can only use digits 1-9 and got to a point that the green region in r10c6 had no value.

[@RichSmith77]

Excellent puzzle. Personally, I thought entering ”17” as centre pencil marks was a more easily understood solution to entering 17 into a cell. This isn't the first time that "number" has been translated to "digit" in CtC's rewording of the rules, and has caused problems. It's a pity that lessons haven't been learnt from the previous times.

[@PotmosHetoimos]

cornermark 1 + centermark 7. i've seen Mark do this for double-digit X-sum clues that had to be entered in the margins

[@RichSmith77]

@@PotmosHetoimos Yes. For situations where the 10s digit isn't less than the units digit, I've used that method too. Here, we know the only double digit number required is 17. (At least we do once we realise 21, the combined area of the 17 + 4 areas, cannot be the answer, because obviously 21 is divisible by 3 and only a fool would start entering 21 into the cells before noticing 🙂).

[@watsonwrote]

It's heartwarming to hear the birthday wishes and the genuine care Simon has for the fans. Great way to wind down in the evening, with brilliant puzzles to follow!

[@penningmeestercgkdelft9159]

Thank you so much again for the beautiful video!

[@pbannist]

Could you please reconsider the black text on blue rules section, I struggle with my vision and can’t read it

[@yoshi6421]

The rules are also in the description.

[@MrHowtofall]

Fillominos may be my favorite puzzle after Sudoku and I'd absolutely adore seeing more on the channel

[@simon7212]

This chanel, dear Simon and Mark, is too good for my own good (time)

[@maljamin]

The way I write 2-digit numbers (usually as temporary aide memoir) is with a corner mark for 10s digit and center mark for 1s digit. And special coloring if I'm afraid of confusing it for usual pencil marks.

[@feliomichaels]

29:58. I absolutely get why Phistomefel suggested this one, the final step is a very nice touch. The rare Fillomino that didn't fill me with dread at the opener.

[@l3igl2eaper]

I restarted the puzzle 4 times before watching the video. Two digit sized regions never entered into my mind as conforming to the rules...

[@s.grey.k]

This one was a lot of fun! Normally I'm not that big on fillomino puzzles, but the anti-division rule restricted the choices enough that it made this one very enjoyable. Hope this rule set inspires some more setters, I'd love to solve more like this

[@TheXython]

I still think puzzles should specify that they use numbers above 9, at least in these digital adaptions where putting 11 isn't really an option. Just to be super clear to players that they can use the alphabet to represent base >10 numbers.

[@windybeach2184]

The rules were more challenging than the puzzle. I required Simon’s clarification of divisibility to start, and how to finish when the remaining region was larger than a digit. The middle part was enjoyable.

[@lukethille6705]

I couldn't solve it on my own because of that "17" region. I suppose the rules don't say anything to prevent that but I find it a little silly for there not to be a caveat stating that the region can be larger than size 9.

[@77kaczka77]

It is mostly not applicable, but there is the following colour code in the electronics. 0 - black 1 - brown 2 - red 3 - orange 4 - yellow 5 - green 6 - blue 7 - violet (can be purple) 8 - grey 9 - white (can be bright grey) But mostly the background means „something“ not a certain number. Thank you for the perfect logic channel.

[@stumbling]

Very nice puzzle. I only wish the rules made it explicit that zones can be greater than 9 in size.

[@manowartank8784]

Great puzzle, but especially the ending was so fun to watch!

[@markjreed]

H for 17 is a pretty standard extension of the hexadecimal idea. The command shell everyone uses on Unix supports bases all the way up to 36, in which Z=35.

[@highpath4776]

why not G ?

[@blockappella]

@@highpath4776 hex includes 16 numbers, 0 to F. F represents 15, so G would then represent 16 and H represents 17. It would seem intuitive that hex, which is base 16, would include the number 16 but because zero has to be representable somehow, it is only able to reach 15. The reason hex is exists is because it represents four-bit 'words' in binary, with 0 in hex being 0000 in binary and F in hex being 1111. G would then be the binary 0001 0000, which is 16 in decimal and 10 in hex, with the following binary 0001 0001 being 17 in decimal and 11 in hex

[@highpath4776]

@@blockappella Its more I forgot 10 in decimal is A in hex , and not A being 11 decimal as my fingers were going !

[@markjreed]

@@highpath4776 yeah, if you know the letters' ordinal positions without having to count, the rule for digits in high bases is that the Nth letter of the alphabet represents the value 9+N, which is not quite as easy as 10+N would be.

[@bobblebardsley]

Strictly speaking ortho- means 'right' both as in 'proper' (orthodox) and 'right-angle' (orthogonal) i.e. the cells connected on the 90, 180, 270 and 360-degree directions, as opposed to the 45-degree diagonals. Although 'sharing an edge' is a perfectly passable definition for sudoku purposes 😁 I'm probably wrong on some or all of this, I usually am.

[@mvivian100]

I've also heard orthogonal used to say North South East or West. The orthogonal directions. Which also might be a useful way to describe orthogonal on a sudoku grid. Ps. Yes strictly speaking orthogonal does not mean, "shares an edge" as Simon puts it, despite that being practically sufficient as an explanation.

[@abiodunade8242]

Second. Love this channel watching your new videos has become apart of my daily routine

[@FoxChaotica]

Been a fan of the channel for a while, and was wondering if you could try solving some of the puzzles from the World Puzzle Championship Challenge book. Specifically the first Cave puzzle in the book. I've never been good at cave puzzles and that particular puzzle destroyed me.

[@Darkstar2342]

Hearing "Zugzwang" pronounced "suck-swang" really makes my skin crawl 😀

[@inspiringsand123]

Rules: 01:01 Let's Get Cracking: 08:00 What about this video's Top Tier Simarkisms?! Phistomefel: 3x (00:43, 00:45, 42:11) Bobbins: 1x (33:07) And how about this video's Simarkisms?! Ah: 13x (08:53, 12:50, 14:19, 17:59, 18:01, 29:11, 30:13, 30:13, 33:02, 33:11, 36:31, 39:08, 40:16) In Fact: 8x (02:05, 03:24, 04:56, 10:18, 10:26, 16:53, 17:25, 18:58) Beautiful: 7x (00:56, 11:14, 14:19, 14:21, 25:13, 31:18, 42:20) Obviously: 6x (07:40, 08:35, 12:33, 27:57, 36:00, 42:44) Lovely: 5x (01:07, 12:54, 14:42, 26:16, 26:21) Shouting: 3x (01:19, 01:51, 03:22) Sorry: 2x (21:22, 24:44) Naughty: 2x (17:03, 27:52) Stuck: 2x (15:55, 20:11) By Sudoku: 2x (00:23, 04:56) Hang On: 2x (08:08, 15:59) Cake!: 2x (02:28, 03:24) Clever: 1x (28:58) Brilliant: 1x (02:27) Extraordinary: 1x (02:41) Shenanigans: 1x (20:54) Masterpiece: 1x (42:47) Surely: 1x (26:30) Whoopsie: 1x (41:01) Most popular number(>9), digit and colour this video: Eleven (8 mentions) Two (73 mentions) Green (9 mentions) Antithesis Battles: Even (5) - Odd (4) Higher (2) - Lower (0) 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!

[@joycedevries]

Thanks. Rules are at 4:53 :)

[@nonagrey3422]

actually it's 4:51

[@jimmyh2137]

@@nonagrey3422 actually 4:53

[@smylesg]

14:38 We may never hear it again, but can we add "zugswang" and its variants?

[@mmomox]

Yeah, please make sure to actually post proper times. It's more than useless to post bad times.

[@TheFreeBro]

4:50 Rules

[@nicholasiverson9784]

Heptadecimal would go up to H assuming we used a similar convention (or any higher base would work).

[@KyleBaran90]

I feel cheated to find out the final digits were higher than 9. I know the fillomino puzzles usually allow it, but my brain was on sudoku mode

[@Gonzalo_Garcia_]

20:45 for me. Quite tricky, but really enjoyable. Nice puzzle!

[@ericpraline1302]

Very nice, thanks. Can never have too many fillominos. First time I realised I had a mistake right at the end, as usual because I forget fillomino is different to sudoku and you can have numbers greater than 9.

[@nonagrey3422]

I love these puzzles

[@emilywilliams3237]

This seems possible for a mere mortal to do, especially after watching you do it. The wording of the rules about one region not "dividing" another was a bit puzzling to me (see what I did there?) so I'm glad to have watched your video to see what was meant by that. Thanks, Simon - as always, you demonstrate your love for the region-defining puzzles in this video!

[@ChanSoloCup]

Fun puzzle but rules need to be more explicit. Base 10 digits are a reasonable assumption outside of very specific industries, and numbers 1-9 are a reasonable assumption in the context of a channel heavily focused on variant sudoku.

[@CaptainSpock1701]

5:11 - Why do you get e-mails asking about what orthogonally connected cells are? I have *NEVER* seen a video where you use the word without going into depth about describing what it means. Why would someone go to all the trouble of writing an email where they could just continue watching the video for a few moments? Your explanations are always exceptionally clear. And this is from someone who does not speak English as a first language.

[@crystalgehrt8861]

I kept breaking it because I didn't realize I could put numbers larger than nine in. It may help to state that in the rules or the intro next time something like that comes up for those who are less familiar. It was a great puzzle though. I really enjoyed it.

[@BleachWizz]

41:50 - nah it's fine... adding all letters you can create um to base 36 numbers... so you could write a region up with size 35 with Z and yeah... it's not commonly used but a number base can be whatever number you want.

[@k-popclassical]

Can anyone tell me what is the piece in the very beginning (in almost every video)? I think it's Mozart, but I'm not sure what piece.

[@kdas7590]

I think the instructions are wrong. A digit is a number between 0 and 9 and is therefore misleading

[@davidmackenzie9701]

Not in any base system above 10.

[@kdas7590]

@@davidmackenzie9701 correct, but it really should be clearer

[@Pingviinimursu]

@@davidmackenzie9701 and if you ever use any other base system than 10, you should explicitly state which one you are using

[@BakuSudoku]

That H is a proper use for octadecimal notation

[@Dommi1405]

H is perfectly fine for 17 in Octadecimal(?), or whatever Base-18 would be called. Or any higher base for that matter

[@Mathemik]

I spent over 3 hours starting over and over because I thought I had messed something up. The rules clearly indicate that we should be placing digits, not numbers. It was really fun up to that point but now I'm really frustrated.

[@tubebrocoli]

crap I was sure I got the solution wrong, but no, it turns out that the instructions were wrong (you need a number that's not a "digit")

[@peaches760a]

Adding on to the Base18+ comments: You can have a numerical system with any base, although computers have made base2 (binary) and Base16 (Hexadecimal) well known. Octal (Base 8) is probably next, probably followed by Base64. As mentioned, there's a few systems that have general implementations for any Base up to 36 that follow the Hexadecimal pattern of digits followed by Uppercase letters. You could also extend this to base 62 by using upper and lower case. Although in computers there's a few specific implementations of ~Base62 systems. Base 64 is probably the most common variation of this, but the typical implementation is Letters first: A-Z, then a-z, then 0-9 and finally two punctuation marks (usually + and /). Base58 takes Base64 and removes some characters that can be visually easily confused (zero, Uppercase O, Uppercase I and lowercase l). Base62 itself is less common since it's less useful for encoding binary data but I believe it follows the same Letters first approach as Base64 and Base58.

[@Tfin]

That's just wrong. Every system is in fact base 10.

[@andrewhouchin5812]

The most elegant way I can see to disambiguate the last three (two) regions is to note: 1) there are 21 remain cells unaccounted for which cannot be one large region because 3 divides 21; 2) both the top and bottom right region(s) must be odd as they are both next to 2 regions; 3) there are 17 cells that must be made up of the upper region and the lower right region; 4) since both those regions must be odd, if they were 2 regions, their sum would be even. So they cannot be 2 regions and must be one region of size 17

[@stephenmccarthy1795]

“What’s That!” seems to solve the puzzle.

[@isidornimages]

As many others I was expecting all regions to be no bigger than nine and agree the use of the word "digit" in the rules was misleading. So the solution at the end came as a big surprise.

[@amoswittenbergsmusings]

A devilish setter, a German, Invited our friends to determine How regions divide The grid, but not quite: “Each other’s size never,” quoth Hermann.

[@psythagoras113]

When HEXAdecimal fails you, use OCTOdecimal! Then your H is correct.

[@ServantOfSatania]

13:58 Fun puzzle, once I found the weak spot it all slowly fell into place

[@hugobouma]

It's remarkable how much people can get their knickers in a twist over the _number_ vs _digit_ issue, as though the universe has done them a fundamental injustice. Yes, CtC should pay attention to the wording of the rules, but mostly to avoid 50% of the comments whinging about this. At least in my native Dutch, the two equivalent words ( _getal_ and _cijfer_ ) are somewhat interchangeable in common usage. Is English more rigid in this regard or are CtC viewers just too literal-minded to function in the real world? I enjoyed the solve, the emergence of the 17 was a nice finisher :)

[@karenhorn1825]

I think "digit" is seldom used in casual conversation, and when people use it, they generally mean one of the numbers 1, ..., 9 (of course 0 is also a digit but I think many people forget that). Certainly the population of CtC fans whose native language is English will not interpret 17 as a "digit".

[@BrooksMoses]

Yeah, in English "digit" is very specifically a single glyph from 0 to 9, or the equivalent in other bases. Or, oddly enough, a finger or a toe.

[@RoderickEtheria]

I managed slightly under 27 minutes, but the last bit wasn't exactly logical, and more leaping. Unless a digit doesn't allow double digit numbers.

[@bukszpryt_]

I spent hours on this, restarting it and looking for errors when i found this long region, that could not fit any legal digit. 17 is not a digit.

[@audio_boys]

I still feel like the H didn't need to happen

[@LeXXeL_50]

It would be more accurate to say "stalemated" around the 14:20 mark. "Zugzwang" is when you are forced to move when you don't want to, "stalemated" is when it is your move, and you don't have a legal one to make, AND the king is not in "Check". ...not to be overly pedantic...

[@merkdirwas]

the 17 thingi is naughty with the "should contain a digit" rule :/

[@fluffycritter]

"H" is not valid base 16, but it is valid in base 18 and up.

[@TheFreeBro]

How can you figure out that H is the 17th letter in a matter of seconds? Without using your fingers to count? These are the life skills I’d love to acquire

[@marusyaknop]

In the hexadecimal system the largest number is F = 15, and H is 2 letters away, i.e 17

[@tessabrisac7423]

In fact it is not, it is 17 only if you choose to go [1,2,3,4,5,6,7,8,9, A, B, C, D, E, F, G, H…]

[@PeterCooperUK]

It’s not, but the way I navigate letter ordinality is remembering M for middle which is 13, so Q for 17 is a quick jump

[@SirJefferE]

As other commenters have mentioned, that's not what he did. But it is fairly easy to memorize the order of the alphabet. I did it a few years back when I had to categorize things alphabetically for a few hours. As a first step, just remember the 10th, 15th, and 20th letters (J, O, and T. *Jot* that down and you'll remember it easily). Throw in the 5th digit (E) if you like, but I don't think most people need to memorize that one. Once you've done that, you can figure out any digit quite quickly without much counting. Want Q? Count up from O and you get 17. If you want to go further, start memorizing vowels and other common letters, and the rest will come pretty naturally.

[@onijester56]

My friend was excited because you weren't going to have naughty sudoku in your puzzle today... and then the numbers started touching each other. They also found it funny that the only way to be family-friendly was to be wrong. :P

[@johabee]

As others have stated: the rules in the puzzle itself are wrong, and mention digit instead of number. Very frustrating. I gave up thinking I made a mistake. The rules in the video description do say "number" I just saw.

[@CrypticCL]

Unfortunately the rules don't permit a two-digit number to be in a region. I thought I'd got it wrong, but it's the wording of the ruleset that needs tweaking. Otherwise an enjoyable puzzle.

[@SrJoa]

I assure you that Cris appreciated your words!

[@jule805]

i‘m a simple person; i see phistomefel in the title, i click.