One Of The Finest Puzzles We've Ever Seen

Рет қаралды 138,141

3 жыл бұрын

▶ NEW PUZZLE/SUDOKU HUNT JUST RELEASED!!◀
We've just released a really amazing puzzle/sudoku hunt by Matyas Martinka. Any correct solution gets a shout-out on the channel! We will be releasing a Murder Mystery Sudoku Hunt for everybody if we reach 5000 patrons.
/ crackingthecryptic
*********************************************************************
Today's puzzle has been recommended and requested in recent days by many of you. It's also been described as "the best pencil puzzle I've ever solved" and various other stellar descriptions from some of the world's finest solvers. It's by Gliperal and it's called Airlocks. Simon attempts to solve it purely logically and concludes it might be almost immune to attack by bifurcation... Is he right? Do leave a comment if you manage to solve it about how you did it!!
You can play it at the link below:
test.crackingthecryptic.com/s...
NB If you want to use the "pen tool" Simon uses in the video then click the "cog" icon and select "Enable Pen Tool". Then it should be pretty self-explanatory how it works :)
Rules:
Divide the grid into pentominos (orthogonally connected 5-cell regions). Cells on either side of a given border must belong to different pentominos. Two pentominos of the same shape (including rotations and reflections) cannot share an edge.
If you prefer to use Penpa to solve the puzzle then here's the link:
git.io/JsZSD
▶ NEW CTC PODCAST - PILOT EPISODE ◀
You can listen to our new podcast at the links below.
Apple Podcasts: podcasts.apple.com/au/podcast...
Google Play: podcasts.google.com/feed/aHR0...
Spotify: open.spotify.com/show/4lr4ojq...
**************************************************************
▶ OUR NEW KILLER SUDOKU APP IS OUT ON ALL PLATFORMS◀
apps.apple.com/us/app/killer-...
store.steampowered.com/app/14...
play.google.com/store/apps/de...
▶ SIMON REACTION BOARD (!) ◀
With thanks to Andrea for creating this :)
simonreacts.avris.it/
▶ OUR MIRACLE SUDOKU APP IS OUT ◀
Steam: store.steampowered.com/app/13...
App Store: apps.apple.com/us/app/id15273...
Android: play.google.com/store/apps/de...
▶ CTC FAN DISCORD SERVER◀
/ discord
NEW: Guide To Our Discord Server:
tinyurl.com/CTCDiscordGuide
▶ OUR BACK CATALOGUE - ALL CATEGORISED WITH LINKS!◀
tinyurl.com/CTCCatalogue
▶ OUR NEW THERMO SUDOKU APP IS OUT!◀
AppStore: apps.apple.com/us/app/thermo-...
Android: play.google.com/store/apps/de...
Steam: store.steampowered.com/app/13...
▶ NEW CRACKING THE CRYPTIC MERCHANDISE◀
teespring.com/en-GB/stores/cr...
▶ OUR CHESS SUDOKU APP IS NOW OUT!◀
AppStore: apps.apple.com/us/app/chess-s...
Steam: store.steampowered.com/app/12...
Android: play.google.com/store/apps/de...
▶TRY OUR CLASSIC SUDOKU APP◀
AppStore: apps.apple.com/us/app/classic...
Steam: store.steampowered.com/app/11...
Android: play.google.com/store/apps/de...
▶TRY OUR SANDWICH SUDOKU APP◀
AppStore: apps.apple.com/us/app/sandwic...
Steam: store.steampowered.com/app/11...
Android: play.google.com/store/apps/de...
▶SEND US PUZZLES TO SOLVE/CONTACT US◀
crackingthecryptic@gmail.com
▶FOLLOW US◀
Twitter: #crypticcracking
@crypticcracking
Instagram (for how to solve daily clues from The Times): crackingthe...
▶SOFTWARE◀
Play the puzzle in the video by clicking the link under the video (above). We are building a website which will allow you to enter your own sudoku puzzles into the software and this is coming soon!
▶Logo Design◀
Melvyn Mainini
▶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.
Thank you for watching!
Simon and Mark

Пікірлер: 296

@Gliperal 3 жыл бұрын

"I have no idea if that is how you're meant to solve this. That was the way I solved it. It was a lot of diddling about with mod 5 and symmetrical 10-cell regions." Those are indeed the central ideas behind the break-in, and you did manage to find them during a live solve, so truly hats off. I will say, spotting the two Z's touching at 29:16 is a bit of a logical bypass, one which I unfortunately could not figure out how to rub out. In fact, it's possible to resolve the entirety of the airlocks simply by "diddling about with mod 5 and symmetrical 10-cell regions." Understanding the restrictions at play can be quite difficult without a proper way to notate, though. In my test solves I would pencil mark how many cells can poke in/out of the airlocks (using the digits 0-4). Without doing something of the sort, I'm not surprised you didn't spot the fullest potential of the break-in. That being said, a remarkable solve to do live, and I couldn't be happier seeing you make it through in the end. I would also like to say thank you to the many test solvers on discord who put this puzzle through the wringer to make sure it couldn't be bifurcated (Stef, Frostini, PixelPlucker, and BenceJoful, to name a few).

@stevesebzda570 3 жыл бұрын

Thank you, your comment helped me to appreciate that more. That was a "wringer",alright. Lol Good job.

@PuzzleQodec 3 жыл бұрын

Bravo, Sir, for creating this masterpiece. Incredible!

@markburgess3860 3 жыл бұрын

Thanks for composing the puzzle! I am a computer science researcher, this gave me some ideas about how to make some puzzles to test our supercomputers

@gregoryreyes5666 2 жыл бұрын

Youttt

@deadlykitten4471 2 жыл бұрын

Very fun puzzle, not too hard once i figured out how the break in happens, i solved it the same way you intended

@esotericVideos 3 жыл бұрын

Every so often, by accident, I will bump the pause button, and then for the next 5-10 seconds I will be thinking to myself "wow, Simon is really deep in thought about this."

@PhaythGaming 2 жыл бұрын

@Jadzia Chance I'm the culmination. Sometimes I'll think I paused it so I'll actually pause it, think he's deep in thought until I unpause it and realize he truly is deep in thought and ends with "right okay".

@alexandergoldthorpe4585 3 жыл бұрын

> draws a p > writes a b > "looks like a d" At 7:24

@Leyrann 3 жыл бұрын

He only missed the q.

@Pigeon0fDoom 3 жыл бұрын

Yes! a Pentomino puzzle! oh, wait.. if Simon needs 1 hour+, then I will take.... lets just watch...

@Eslabo 3 жыл бұрын

True 😂 I always try to give it a go, but staring into nothingness for 10+ minutes isn't really that fulfilling

@Jonas.Nilsson 3 жыл бұрын

Yeah! I was kinda the same! I thought, let's here the rules first, then go for it. And then he talked about his fear for this setter! I just didn't even try! And my god! I would not have gotten far!

@charlessaintpe8574 3 жыл бұрын

My approach, which I think is helping me learn, is to try on my own until I get stuck, then watch Simon until he makes a breakthrough I haven't, then repeat until done.

@sihisihississa-5748 3 жыл бұрын

Yup! I colored around 7-9 cells that had to get out and then i quit 🤣

@z-beeblebrox 3 жыл бұрын

@@charlessaintpe8574 I've been doing that too. But in this case...the part I got stuck on was the beginning, and watching Simon until he makes a breakthrough meant watching 40 minutes of the video XD

@kaxybaxy4147 3 жыл бұрын

simon is the only person to successfully solve a puzzle but then delete part of it to go back and do it logically 🤣🤣

@Lambda.Function 3 жыл бұрын

One bit of logic I used early on was that the 10 cell regions with 2 exits must always have a self-contained pentomino. They can't contain 2, so the exits are both part of different pentominos, but each of those pentominos can consume at most 4 more cells in the region, which leaves 2. To consume all 10, you must therefore have a pentomino within them, meaning the two exit pentominos must consume exactly 5 cells. That also lets you find some connected cells, as there are only so many ways to draw the pentomino.

@billionai4871 3 жыл бұрын

i had a similar idea, but i thought that to keep the mod 5 property, however many cells poke from the entrace must be the same number as the ones poking out of the exit

@troymcdougal9010 3 жыл бұрын

45:41 "Never mind about my stupidity." Simon if this is stupidity, may I be cursed with stupidity and may I never recover! One of the things that makes CTC so watchable is seeing an absolute genius work through every possible iteration of logic to come to the point I would never have dreamed of, and trying to imagine how many years of my life it would take to learn enough logic to even begin this level puzzle.

@areyouraidy5967 3 жыл бұрын

Small tip to just mace the technical stuff easier! If you want to do a “let’s test this to se if it breaks”, you color one random not used cell red. If it breaks and you have to go back, you just undo until the red goes away, so you don’t undo to much or not enough! And if you want to leave it just remove the red cell! Like at the 1 hour mark. Never done a puzzle like this but seemed like a nice idea in my head!

@Leyrann 3 жыл бұрын

This is actually how the one person I know that frequently bifurcates does it. When he bifurcates, he colors the cell he bifurcates on.

@Epaminaidos 3 жыл бұрын

I did this with numbers: put a 1 on the cell I am guessing. And if I have to guess another cell in the process, I put a 2 in. Made me feel smart for finding this method and dumb for needing it :-)

@SvenCodes 3 жыл бұрын

I've actually contemplated a save point feature. It might encourage bifurcation, but I'm not one to judge!

@DrCumberdale 3 жыл бұрын

1:18:23 Ah, the famous and well-known "how-on-earth-you-gonna-fill-these-squares"-problem. A classic piece of Cracking The Cryptic jargon :D

@karissajohnson7961 3 жыл бұрын

We've had several amazing movie releases, have we earned a bloopers reel release of clips from videos that never made it through?

@MasqueradeCrew 3 жыл бұрын

I'm curious how many "videos" haven't made it through.

@Mithical9 3 жыл бұрын

Monominoe - doo DOO, do doo doo 🎶

@PixieCinnanom 3 жыл бұрын

I was waiting for that.... or a "nori nori"

@margaretmcnarry4298 3 жыл бұрын

Had exactly the same thought! Then I couldn’t get the song our the visuals out of my head.

@antimatter2380 3 жыл бұрын

DooDoodoo, doodoodoo, doo doo doodoo doo.

@griffinshorts785 3 жыл бұрын

I don’t understand

@antimatter2380 3 жыл бұрын

@@griffinshorts785 kzfaq.info/get/bejne/brSPp9ihtajYh4U.html

@Jablicek 3 жыл бұрын

[dramatic music] Coming to KZfaq this May [dramatic music swells] "Pentomino" the movie. Reviews: "This is so exciting!" - Simon Anthony (57:53)

@ananas_anna 3 жыл бұрын

Finished, took me 1:45:55. I'm really proud of myself :)

@JeffErickson 3 жыл бұрын

Monomino? (Doot doooo didoodoot) Monomino? (Doot doodoot doot) Monomino? (Doot doooo didoodoot didoodoot didoodoot didoodidoodit doot doot doodoot doot)

@Akatsuki69387 5 ай бұрын

Underrated comment

@reddragon3132 3 жыл бұрын

Simon not fixing the colours at the end was deeply unsatisfying

@danikanskywalker2119 3 жыл бұрын

A part of me died when you didn't finish colouring the regions

@randybell101190 3 жыл бұрын

Monominoe, dominoes, triominoes... As long as we avoid norinoriminoes

@griffinshorts785 3 жыл бұрын

I’ve seen a couple comments like this although I didn’t understand Is it a reference to something or is there actually something call norinoriminoes

@eduardosolistinoco9698 3 жыл бұрын

I know that there's a norinori meme in the ctc community (there's even a video where the intro is only norinoris). What is norinori exactly? that I don't know

@nedb147 3 жыл бұрын

For someone who despises bifurcation, Simon I’m staggered how much you enjoy pencil puzzles so much. It seems like an exercise in breaking things! Great solve, as enjoyable as ever!

@jsadvent8240 3 жыл бұрын

Gliperal, you are wickedly clever. I look forward to the next 82 minutes watching Simon's solve. Edit to add--Brilliant solve, watching Simon unlocking Gliperal's creativity, bit by bit. Thank you both!

@Losloth 3 жыл бұрын

Hollywood must cry when I choose to watch this instead of a two hour feature film :p

@mceajc 3 жыл бұрын

Astounding that puzzles like this exist, and that someone can solve them live in under a week! My only sadness is that Simon missed an opportunity to tell people not to "P" in a corner!

@k8giggles 3 жыл бұрын

Monomino! (Do doo be-do-do) Monomino! (Do do-do do)

@philm5872 3 жыл бұрын

Colours are so much easier to visualise than lines

@granite1482 3 жыл бұрын

The real challenge: take a drink every time he says the word ‘pentomino’

@horsthorst1202 3 жыл бұрын

1:18:23 Ah yeah, the good old "How on earth are we gonna fill these squares?"-problem :D

@sama477 3 жыл бұрын

Simon should have removed pentominos he found from the colored regions. That would have made keeping track of the size of the colored regions much easier.

@reubenmckay 3 жыл бұрын

I was thinking exactly the same thing. You don't need to include a pentomino in the count as the pentomino is 0 mod 5 by definition.

@alli_mode 3 жыл бұрын

Monominoe doo doo do do do. Monominoe doo doo do do.

@DArtagnonW 3 жыл бұрын

Loved it. It may have been more straight forward to think of, for example, 31-regions as needing to cede 1 square rather than take 4.

@AngrySanta 3 жыл бұрын

Menomino do do da doo do Menomino do do da do Menomino do do da do da do da do do do da do

@DJarr216 3 жыл бұрын

Well Simon, any chance of this puzzle making it into a world championship is probably gone now because you solved it on youtube.

@DanielAydarArantes 3 жыл бұрын

That new tool is LOOKING AWESOME! Specially getting the rules and more configs into it! Kudos!

@SvenCodes 3 жыл бұрын

Thanks! These kind of comments keep me going!

@katam6471 3 жыл бұрын

I'm rather new to this channel and I've never seen a puzzle like this before. I wouldn't be able to solve it if my life depended on it, but it was an utter delight watching Simon cracking it.

@Crocodile_Appreciator 3 жыл бұрын

Oh baby, this video is in widescreen so I can stretch it to fill my whole phone screen 🤤

@timdorr 3 жыл бұрын

CTC now in IMAX!

@mightworth3735 3 жыл бұрын

Oh yeah

@1kot4u 3 жыл бұрын

precisely

@ahmaddib5787 3 жыл бұрын

love seeing another long video! always a great time to watch you solve sudoku for over an hour, hope you enjoy doing them as much as I enjoy watching!!

@trulsfinne9362 3 жыл бұрын

*cue Muppets music* Monomino, do do, do do do!

@bertbergers9171 3 жыл бұрын

Thank You Simon, plz don't apologize for making a full tilt logically solution to a hard puzzle! It is great that you take the time to do that. Even at the end you took the time to not just accept a solution, but disprove the other solve paths.

@ApesAmongUs 3 жыл бұрын

Monomino do doo do do do. Mononimo do do do do Monomino do doo do do do, do do do, do do do, ddodododo DO DO DO DO DO - Jim Henson & Simon

@jessesturre 2 жыл бұрын

Simon: "You can't have a monomino Everybody: tutu tududuu Simon: Monomino Everybody: tu tudutu

@peterkelley6344 2 жыл бұрын

My thought as well. Jim Henson is again smiling down at all of us.

@ia3423 3 жыл бұрын

I wonder how many puzzles simon isn’t able to solve, seems like he solves just about anything lol

@amoswittenbergsmusings 3 жыл бұрын

He really should have a go at the Riemann Hypothesis or the Twin Primes Conjecture. Fermat's theorem is gone, though 😎

@idannen 3 жыл бұрын

Yeah, I've been wondering if there are any videos he started and then abandoned because he had to give up. He always worries when a puzzle is difficult, but has that actually happened?

@tanuki9691 3 жыл бұрын

he's said a few times he can't finish some puzzles so he has to record a new video for that day. I may be misremembering but I also recall him saying one day he was really stressed out because he has already been unable to finish one puzzle that day and it was much later than normal for him to be recording. He also says often that a puzzle may go to the playlist of cracking the cryptic videos that never see the light of day because they dont finish or have a non-uniqe solution

@PuzzleQodec 3 жыл бұрын

@@tanuki9691 They've got testers to at least make sure a puzzle is solvable, and suitable for a live solve. So if they take on a puzzle, at least they have some guarantee the puzzle actually solves. But yeah, even then there are plenty of unfinished videos, these puzzles are just so tough!

@dollarsing 3 жыл бұрын

Simon, you're a genius. That was fantastic!

@Lisa-nm8ij 3 жыл бұрын

I love that the KZfaq picture in picture box fits exactly into the gap in the full-size version of the puzzle on mobile🥰 I'm not good enough in pentominos to do them alone, but I like to do these puzzles together with the puzzle masters !

@cyclopsboi 3 жыл бұрын

monomino doo doo do do

@markhanks5865 3 жыл бұрын

That was a super enjoyable watch! Congratulations on the solve.

@shachamarazi3720 3 жыл бұрын

I started watching to see the new software line feature and then I couldn't look away from this amazing solve

@SvenCodes 3 жыл бұрын

Glad you like it!

@mikepictor 3 жыл бұрын

Menomino - doo dooooo do do do

@mirthevanhoorn 3 жыл бұрын

Thanks now that song will be stuck in my head for the next decade.... xD

@susanne5803 3 жыл бұрын

Monomino, I think. Works the same ...😄

@chips161 3 жыл бұрын

I can't solve any advanced types of Sudoku, but this type of puzzle somehow was OK and less headache-inducing (though it did take me quite a while, a little over 75 min). Glad you showed this one, I'll be trying out more puzzles like this!

@MiguelOliveira87 3 жыл бұрын

This is an incredible puzzle and an amazing live solve. Thank you for the video!

@idannen 3 жыл бұрын

Monomino monomino nori nori

@gauravmitra150 3 жыл бұрын

Monomino, Monomino became Manamana in my head. Boom, now i got a song stuck in my head.

@themorebeer3072 3 жыл бұрын

Monomino (do do de do dooo)

@alekwolfe7123 3 жыл бұрын

I actually enjoy your longer puzzle videos because i can watch them in increments around my meals and before bed (i usually fall asleep to your voice and the geometry). Learning your skills and feeling okay to not know everything there is to know. A video a day from you is just a blessing. Thank you. Marks voice isn’t as sleepy for me and he solves it much differently than my brain can think and handle. I do watch some of his though.

@escaperoomleander1948 3 жыл бұрын

This is the type of puzzle that I'd give a serious effort to for about 10 minutes, then just decide a certain area is a certain shape, go from there, and when the puzzle broke I wouldn't care. Scribble something in, it's done, moving along.

@ZachGatesHere 3 жыл бұрын

This would definitely be a case of bifurcation all over the place for me.

@escaperoomleander1948 3 жыл бұрын

@@ZachGatesHere No doubt, and no turning back once I hit an error. Scribble, scribble, there you go, done!

@bobuardodavinci93 3 жыл бұрын

This is one of the best, and hardest, puzzles I’ve managed to solve. I actually ended up pencil-marking every one-cell entrance to a big region with all the possibilities for how many cells could be added from that entrance, and by doing that could eliminate a lot of options that wouldn’t have valid combos from the other entrances. That really helped me see how each region interacted into the next Edit: ...and having now noticed Gliperal’s comment, I feel good knowing that the puzzle’s creator used the same method! 😄

@TramvayValera 3 жыл бұрын

now THIS is a film, these top/bottom black lines deliver the effect

@PathOfShrines 3 жыл бұрын

Great puzzle. A bit over an hour for me. I did do a short bifurcation to break in. One of the 4-regions in the bottom left has to be filled with a P, and its neck has to cross the "door" between them (or else they're both filled with a P). If it's in the right region, then the bottom left corner doesn't work out; it's not a long search, but it wasn't pure logic. The more interesting logic here is with the 10-regions. First, you know that a pentamino has to pass through each door (because if the door is a boundary, the region is exactly filled with two pentaminos, and then they have to be reflections). Second, the pentaminos in the doors of the 10-region in rows 3+4 must extend more than one cell into it, because otherwise again the two other pentaminos there have to be reflections.

@ShinjiSixteen 3 жыл бұрын

What a delightful puzzle! Thank you for featuring both a great puzzle and solve/discussion. Also very happy to see a "not Sudoku" puzzle

@ryang5655 3 жыл бұрын

Absolutely unbelievable puzzle and solve, been watching CtC every day for a year now and this is my new #1 puzzle😄

@ZeroRyoko 3 жыл бұрын

Am i crazy but at @22:49 he colours 39 squares blue, then highlights 5 more and says it adds up to 45? or am i going mad!

@ZeroRyoko 3 жыл бұрын

@32:35 cant you just subtract 1 square on the left turn it green and the blue count goes to 40 and the green area 30?

@lexmakesstuff 3 жыл бұрын

@@ZeroRyoko subtracting one from blue and putting it with the green would result in the same thing as taking the 4 cells from green and putting it in the blue. it just changes it from being a 25 and a 45 region to being a 30 and a 40 region.

3 жыл бұрын

Saw your solving video again after publishing Gliperals setting video, no words, just WOW !!! You have found the intended path... The puzzle setting looks so easy, just combine some logical snippets... done. But it's not, this well selected combination makes this puzzle so fine. Respect Gliperal & Simon!!!

@Kaspian1828 Жыл бұрын

How can most problems on this channel take me days to solve and this one solves it self in 20 minutes while cooking at the same time?

@xeonrisq2919 3 жыл бұрын

One of the best parts of Simon's videos is at the very end when he signs off.. He looks so smitten when he's smiling so hard. I can only imagine because he has solved an insanely difficult puzzle live for this channel.

@derekstanyer 3 жыл бұрын

Just discovered this channel recently! I've only tried a few of the puzzles, and this was the first one I have completed! I'm pretty bad at sudoku so I don't even try those ones. I didn't solve it nearly as elegantly on a macro scale as you, with the big boxes. I started by figuring out some of the shapes in the bottom left and just working from there. I also used the colours rather than the lines, its just interesting to see the different methods and the different ways people think.

@sama477 3 жыл бұрын

Alternative title: _48 minutes to P_

@lezzly8581 3 жыл бұрын

Monomino do do do do do 🎶🎶🎶🎶

@brunol4135 3 жыл бұрын

I'm a big fan of "cracking the cryptic". I like Sudokus, of course, but I'm especially happy when you're showing other kinds of logic puzzle. That was the first time I managed to solve a pentomino puzzle. Here's how I did it. First, I managed to find all the "forced" lines by logic. I managed to get a bit more logic than Simon on the top-right pink region. In particular, I found that the pentomino entering from the left airlock couldn't have only one or two squares inside the pink area (otherwise, it lead to symmetries). That allowed me to find the in the top-left of the bue area. At that point, I was stuck. I watched the beginning of Gliperal's video and learned about arithmetic mod 5 and notation for cells entering airlocks. I came back to the puzzle and used this notation on all airlocks. With the lines I already found, it allowed me to find the correct numbers on all the airlocks. Thus, I could place a few more pentominos. From that point, I was able to solve the whole grid with logic alone (no trial and error like Simon). Placing walls helped a lot. I must say I'm quite proud that for once in my life, I solved a puzzle better than Simon. Of course, I got some help with the airlocks (let's say it was a handicap for a non-pro) but I still think my solution was more logical. @Gliperal Thank you for this awesome puzzle and the video of how you made it. I always wonder how people come up with puzzles with such amazing logic and your video was very instructive. @Simon 'Although this once I think my solution was better than youra, I couldn't have solved it without the helping hand from Gliperal's video. I love your videos, especially your explainations, which are easy to follow and your enthusiasm when finding (and showing us) the beauty of puzzles. And I admire you for always managing to find solutions, whatever the complexity of the problema. I know you can't help apologizing when you struggle or take time but as for me, you're always forgiven. I enjoy all your videos, even the long ones!

@Tharronis 3 жыл бұрын

I never could have solved this puzzle I think, brilliant.

@MRafas-ie9zh 3 жыл бұрын

anyone noticed how U pentominos are used as some kind of borders between regions and how Simon (almost) made them all purple? Would be cool if he finished the colors

@emmettnelson7260 3 жыл бұрын

You solved this pretty similar to I did but with a more primitive application of a certain type of logic. Basically on all the one cell paths between the regions I wrote down candidates for all the possibilities of how many cells could extend out of them, then eliminated candidates if there was no way to get a mod 5 region. Using this I could quickly figure out how many cells extended out of each area in each place. Though to eliminate some of the candidates I still had to find which ones that isolated a 10 cell symmetrical region. Also in some of the cluttered areas you can find a single path through them with the property that if two cells on that path belong to the same pentomino, all the cells between those two on the path must also be on that pentomino. This strategy simplified some logic, especially in the bottom 10 cell airlock.

@oliolion 3 жыл бұрын

I love this type of puzzle. I hope you do more like this, they are my favourite.

@glum_hippo 3 жыл бұрын

Well done, Simon!

@balkthor 3 жыл бұрын

I’m just here to say “Do doooooo do doo doo *monomino*”

@alli_mode 3 жыл бұрын

Awe man! I just ppsted this exact comment! To be fair, i had been scrllong for about 45 minutes.

@violetasuklevska9074 3 жыл бұрын

In my futile attempt to solve this marvelous puzzle, I've come up with names for all the pentominos. Here we go: In alphabetical order: bolt, boomerang, cane, cross, fountain, lever, magnet, ruler, ship, snail, stairs, tap. Try guessing them!

@felipevasconcelos6736 3 жыл бұрын

U, N, V, L, X, T, Y, Z, I, P, W, F? Both “boat” and “magnet” look like an U pentomino to me.

@violetasuklevska9074 3 жыл бұрын

@@felipevasconcelos6736 I changed it to ship which is what I originally had in mind, not sure why I wrote boat.

@violetasuklevska9074 3 жыл бұрын

@@felipevasconcelos6736 The y does look like a lever now that I think about it. I had the z be the lever since I couldn't come up with anything better for the z. Magnet is u, lever is z and ship is y, you have the rest of them.

@RichSmith77 3 жыл бұрын

@@violetasuklevska9074 Since you replaced 'boat" with "ship" and then moved where boat/ship appears in the list alphabetically, the list doesn't match up with Felipe's answers any more. That caused me some confusion. 😂 If I've re-ordered it right, we have Bolt = N Boomerang =V Cane = L Cross = X Fountain = T Lever = Z Magnet = U Ruler = I Ship = Y Snail = P Steps = W Tap = F

@josephdlist 3 жыл бұрын

26:00. I’m getting real “periodic table of elements” vibes.

@JPgreekgaming 3 жыл бұрын

Two words, stunning and utterly brilliant!

@Sidiciousify 3 жыл бұрын

Thats 4 words...

@KarasuGamma 3 жыл бұрын

This video has convinced me that I am very strongly not a fan of puzzles like this one, where you have no choice but to go on an elaborate, arcane investigation with no direction. I commend Simon and anyone else who's able to see where to go with something like this, but puzzles like this one are where I draw the line for myself.

@stefanliew3076 3 жыл бұрын

That's a fair opinion. There was an easier way to understand this logic by listing the candidates of the number of sticky out bits between regions and eliminating candidates that don't result in a region divisible by 5. Simon used some brute force to solve this puzzle with a lot of if/then which is really impressive, but the resulting solve isn't as enjoyable to watch since it's harder to understand.

@KarasuGamma 3 жыл бұрын

@@stefanliew3076 No, I have no problems with the way Simon solved it. My issue is solely with the puzzle (and others like it) in the first place, where you're expected to discover some intricate and unintuitive trick before you're capable of making any progress at all.

@thornsilverhollysong1715 2 жыл бұрын

Thank you Simon, not only have you introduced me to a new type of puzzle, but also I shall go about my day humming "Monomino doo DOOO do DOO do" :D

@nickellis999 3 жыл бұрын

Very impressive logic. Well done Simon.

@bohs2000 3 жыл бұрын

I think the completed grid would look better as shaded regions rather than pentominoes connected with lines...

@areyouraidy5967 3 жыл бұрын

I was thinking the same, until I realized every unique type of pentomino would have to have its own color. Otherwise they would just blend together..

@stevesebzda570 3 жыл бұрын

My goodness, (what a corker).!? [I just happened to hear that word used in a mystery series] That was murder, alright!? I don't know how you persevered. Way to go though, Simon. Great job, [both You and the Constructor). 😅

@RingtailCafe 3 жыл бұрын

Get ready to count how many times he says pentominos!

@Cashman9111 3 жыл бұрын

nori nori times

@leonhardeuler675 3 жыл бұрын

Let's take aa drunkk effry tim...

@emoore06905 3 жыл бұрын

"Monomino" is a really big word for "square" :)

@eratosthenesieve 3 жыл бұрын

Well, a single celled square. An O Tetromino is also a square.

@bearcubdaycare 3 жыл бұрын

Pentomino puzzles are fascinating, for some reason, I find.

@BozoTheBear 3 жыл бұрын

At the 8 minute mark, I started thinking it'd be fun to watch Simon solve one of these puzzles on an MxN grid where neither M nor N is divisible by 5.

@dragade101 3 жыл бұрын

@01:17:04, I love that you undo a possible solution in the corner. In that you are hunting for absolution (either there are multiple solutions in that top row or there is the solution that you found)

@dimakorolev 3 жыл бұрын

Hi Simon! You rock! We've solved it in under 1.5 hours (and watched the video afterwards, of course, only using it for cross-checking ourselves at the last slide, the one with the final solution; although, admittedly, there was one mistake). The impossibility of the symmetry of the 10-cells regions is something I've learned from you. What we elected for though is to draw more constraints from the "airlocks", as it's clearly more beneficial to solve the sub-problems that impose more constraints on the others. So, we've quickly shown the lower airlock must contain a U, either on the left, upside down, or on the right. This limits the number of cells to be considered for the central region (mod five). (Also, on the rightmost edge we've colored the two adjacent cells "below" and "above" the "bend" into the same color, further constraining the possible numbers mod five in the lower region, but these are details). Coupled with the constraints on the upper airlock, similar to how you've done it (proving it should take two more cells "looking outside" the lower left corner of the upper airlock), it's provable that the central region and the lower left region force the three-vertical bar to be a "+" (an X as you call it). We then focused on solving the central region, because there's another neat trick I've learned from other puzzles: if some sub-solution allows for multiple solution then it's wrong. Since the middle chamber only connects to the top one via the upper airlock, this adds further constraints (on the upper airlock, and, importantly, that there can't be a P on the very top in the middle!) One last trick that we've used which looks neat enough for me to share is to imaginarily draw extra boundaries and reason about what could possibly cross them. The imaginary boundary does not have to be one cell wide (although it's clearly preferred to have it this way). Not sure the "perfect" solution to this puzzle would include this trick, but it helped us prune the backtracking / proof space for the lower right corner, as it was clear that from the 4-1 from the bottom right corner there has to be a 3-1 and 2-1 connection, quite early on. Thanks a lot for this puzzle! It's probably my second favorite so far, after the rivers and islands one (which was the first puzzle that got me drawn to your channel as I'm not a sudoku person, but those fourteen hours were well worth it!)

@JK7H 2 жыл бұрын

If you want to jazz up this puzzle take a shot every time simon says pentomino. :)

@ElectedWall 3 жыл бұрын

So if we get him to 5k patrons then he'll make 6 figures from patreon at a max of 180k a year to support the amazing videos?, seems like a win-win.

@hedblomz 2 жыл бұрын

nicely done

@andrewnelson2525 3 жыл бұрын

I was very happy to solve this puzzle, though I took several breaks when I kept getting stuck, and once truly thought I'd irreparably broken it near the end but thankfully spotted how I'd misarranged just three pentominoes. I knew the whole tine the "airlocks" were the key, but it was not easy pinning down how to use them. A great way to kill few hours, then another hour twenty watching Simon do it.

@idannen 3 жыл бұрын

I like the slightly elongated proportions of the video shape. It really feels like watching a movie.

@Kamiyurikai 3 жыл бұрын

Mod 5 Cryptics : Airlocks the movie

@nicksm7980 3 жыл бұрын

Bold lines in this app could be more bold, like in Penpa. I'm not colour blind and have good eyesight but still can't sometimes quickly distinguish bold and normal lines in your videos, especially when a lot of colouring is going on.

@SvenCodes 3 жыл бұрын

I've just added a setting to enable dashed grid lines. Perhaps that solves the problem for you?

@nicksm7980 3 жыл бұрын

@@SvenCodes, yes, it's much better now, thank you. I hope that Mark and Simon will use this option when solving similar types of puzzles.

@SvenCodes 3 жыл бұрын

@@nicksm7980 hehe, I just wrote the software and encourage Mark and Simon. But mostly I try to enable them and stay out of their way. Habits die hard!

@nicksm7980 3 жыл бұрын

@@SvenCodes, at least Simon finally switched back to large digits mode. Happy days.

@jovaji72 3 жыл бұрын

Oh, oh, oh!!!! It is popcorn timeeeee!!!!!!

@DanFre40 3 жыл бұрын

For some reason, while watching this video, the phrase "I'll have a P please Bob" popped into my head....

@amoswittenbergsmusings 3 жыл бұрын

What an epic triumph of perseverance and dogged logic. I'd *love* to see a setter's confessionial dedicated to this (a)mazing puzzle. It is one thing to create an über-difficult puzzle and quite another to offer an almost linear solution path.

@ojojojojojoje 3 жыл бұрын

I love these colouring ones ^_^ thank you so much, and well done with the logic! I did bifurcate this one - the "Z" pentomino touching the bottom row at 5,6 had only two possible options, so I luckily bet on it being "Z" (and the one left to it therefore "P" - I did choode it because this gave me 2 in 1) I don't think you can ever bifurcate without some logic to begin with (to slim the options)

@lizbrooker4635 3 жыл бұрын

I always give it a go... but having seen the video time putting on kettle for an enjoyable watch x

@melisagtube 3 жыл бұрын

WOW!!!😁😁👏👍💥⭐️⚡️I did it. My first solve. No math!! Just used the rules and logic and moved boxes. I AM SHOCKED AND HAPPY. Omg. 😮...just over an hour.

@Arcessitor 3 жыл бұрын

Took me 29:50. Definitely a step up from the other shaded puzzles in terms of difficulty. Break-in for what I knew to be 'correct' was the area that turned into a cross later, as well as the middle top right area that forced entry from either of its sides because any solution to the 10 cell area would duplicate pieces. Basically quasi-bifurcated the rest.

@Keyboardje 3 жыл бұрын

I can hardly believe it, but... 32m 55s I just went with my guts, not counting large sections like Simon did, but with the pantomino's themselves, in five's. After finding some of the 'airlocks' that had to connect, I could figure out how they fitted, and after a few times coming to a halt and deleting a small section because I got two of the same pantomino's connected, it went surprisingly easy. I think I just got lucky though!