The Greatest Part (or parts) were: This is blue, this is blue, this is blue.. this is blue... this is also blue As he colors 2 blue squares and 3 red squares
What i like about you, Simon, is how you sometimes explain the ruled out options all the way, but not because it's nessesary, but because it's hilarious. Like "this square becomes snake, and that becomes the head of the snake or the tail of the snake, and we don't need any more of those". Or "we'd have a very very short snake, and the rest of the region is .. just a massive region 117 cells large". Thank you for entertainment!
I like to pause the video and try myself, and then unpause when I get stuck. "Unpause..... Yep... yep... got that one... he's almost caught up.... No you silly daff, look at that other block.... okay... now give me a hint for the next move.... Ahhhh, I see, pause."
I know, I like to pause and figure it out myself and then think to myself "I figured it out first" when in reality it took me an hour and a half to figure it out while it only took him 20 some odd minutes.
Just don't pause too early. I spent 15 minutes trying to figure out a starting move before looking at the video again, only to realise that an "F pentomino" was the shape.
Nikolai Beluhov actually lives in my city and I know him personally since he has also taught me maths. He is a great mathematician, probably one if the best in the world.
@@dumbdutch1200 holy shit I made this comment 1 year ago, yet it feels like it was yesterday. And yeah, im retarded for making this mistake, but it was like 3am when i posted that comment, so im sorry eksdi
This was an amazing experience! When I started the video, I screenshotted it (I’m on mobile) and I started the puzzle on my own with you paused in the background. Then when I got stuck halfway through (also nervous that I messed it all up) I played your video and watched you go through the same thought processes I just did! And then when you got to where I was at, I felt like we were bouncing ideas off each other. You would say, “If this was a snake, then...” and I’d say, “I’ve tried that. Once it’s a snake it loops back on itself eventually.” And then you’d realize at the perfect time, “Oh wait! This can’t be a snake so it must be a pentomino!” And then you came up with a brilliant idea that unlocked my brain. And then I paused you and started going again. Then with a single “what if this is a snake” hypothetical situation, I solved the entire rest of the puzzle and had to go back and fill everything in haha I’ve never tried these puzzles on my own, but I’m going to start trying this method. It was a blast to see you go through the same thought process as I did lol made me feel smart
Literally just beat and was writing "1 2 3 4 5" on all pentomino cells to make sure i had done it right, and right in the last pentomino, as i was typing the 5, instead of pressing 5 I pressed F5, thus reloading the page and sending all my progress to hell
for this reason I rarely use the number keys above the letter keys. Number pad is faster, easier, and there is less risk of accidentally pressing an F key.
I finally solved it. It took me two hours and two breaks to for a coffee and a cry, but I solved that friggin snake! It was a lot of fun too. Thanks, Simon!
If it makes you feel better... I was at work and printed off an 11x11 grid from word after 4 attempts of drawing an 11x11 grid. I only have pens and highlighters so I managed to eventually solve it after a few restarts
the truly extraordinary part is that he always completes all the puzzles within the video without getting completely stuck or giving up (or at least in the videos i've seen so far....)
This whole puzzle seems to work off of the effect of the initial conditions propagating through the board, which is why it can be done with such little information. That F piece sets up a ripple effect that goes up to the opposite corner, and then "echoes" back to fill in the blanks. Really clever puzzle making
@@mrluchtverfrisser Not an explanation exactly, no. It's an observation of how a puzzle with such little starting information can have a unique solution. It starts off with the given F piece, which leads to x, leads to y, leads to z etc, with a bit of information missing each time. The information found is still enough to make determinations of what the rest of the puzzle looks like. It's only once it hits another boundary wall that you can start going back and filling in the missed information. Not exactly an explanation on how to solve it, just an interesting way the puzzle plays out
@@mrluchtverfrisser Ah, I see, sorry for the misunderstanding. Fair point, I see the circular logic. Made sense to me at the time, but now I'm thinking if you move the given information slightly, or change the given pentonimo type, you can't guarantee if it has a unique solution, if any. I'm sure there's some math that can be used to find out from just the initial informatiob, but that's way over my head to figure out
This puzzle is actually pretty intuitive. You use a whole lot of logicking that I didn't seem to need. I drew in the puzzle the same as you did until 9:22. Then from there the options become not-instantly-obvious and you just use a second colourset (hypothetical snake and hypothetical pentomino) to fill out hypothetical pentominos and the snakepath that it forces until you run into a branching or touching pentomino problem. And every time you confirm a section you override the colours to confirm it and then continue off of that. If you first get the right path to that red spot created on r8c6 after going to the top-right corner and then the bottom path and it up to the top left corner simultaneously, it's pretty easy to figure out which pentominos to use. I did it more than twice as fast just on spacial awareness. Because no two pentominos can go next to eachother the snake has to get within a distance of 2 of each corner. After the first F is placed it's obviouis which snakehead/tail goes to which corners. The big thing that matters is that if a pentomino is against the edge, the snake has to stick to it until it's past it. Once you're done, you should select all the cells of the snake that touch diagonally. You'll see that they are crucial for the seperation (and thus shape of) the pentominos.
I watched around 10 videos from this channel and Simon's way of interacting with the puzzles and talking about them seemed familiar to me... At the end of this video, it struck me: He is the Steve Irwin of puzzles. "That is beauuutiful. My goodness"
Took me less than 40 minutes. Much of that time was spent discerning whether or not the F pentomino could be flipped in the very beginning, but all other possibilities were just impossible.
Took me close to an hour, including one restart after I ended up with a square that couldn't be snake nor pentino, but I did it! Absolutely amazing! Wouldn't mind seeing more of these on the channel!
"Do give this puzzle a go"... well, I would, but I really have no idea where to start with these things, or where to continue. I can probably work out how to finish.
I started out by going west, ran into a stopping point after reaching the wall, went north after that. did not realize I was watching your video on x2 speed, got much more encouraged when I realize that you and I were solving at the same rate.
7:18 for a rigorous solve here. I spent about a minute knocking out most of the bottom right corner, then 3 minutes making very slow incremental progress on the right side until it all instantly resolved. The top left behaved somewhat similarly. I checked the original GMpuzzles page for the target times and apparently I missed the master time by just 3 seconds.
I was able to solve this without even considering the F shape (it just ended up working out of course since there's a unique solution). It took a bit of trial and error at the start though. It was a really fun puzzle. I like these kind of logic puzzles so it'd be nice to see more.
Just completed this before watching the video, as suggested! For some reason I could only think in Simon’s voice and mannerisms which I’m convinced helped me solve it
In addition to his logical talent, Simon has fantastic teaching abilities. Cool! I appreciate all popularizers of knowledge and science like George Gamow (modern physics), Hugo Steinhaus (mathematics) and ... Simon (logical thinking)
45:30 for me, that felt amazing to solve, even if I was a bit slow. I did it the same way as the video for the majority of it, which is always a good feeling, but we diverged near the end. I knew the lower half of the backwards C at the top at 23:30 had to connect to the middle portion in some way, so I checked each of the possibilities that could result in a correct pentomino in the middle and solved the overlaps, the rest of the logic followed fairly easily.
I managed it in 55 minutes, and the time passed quickly! Super fun challenge all the way, just the right amount of difficulty without too much frustration. Really well designed puzzle.
been watching the channel for a week or two now. i love logic puzzles, but am still trying to get the hang of the more complex sudoku puzzles. this is the first puzzle on the channel i actually tried before watching the video, and actually was able to get through it successfully! feels good
Lovely puzzle! It took me 22:57 to solve. I found it easier to bifurcate when I got to the point that Simon reached at 10:27. It didn't take long to rule out having row 5, column 11 as part of a pentomino.
This took me just shy of 15 minutes to complete. Its a brilliant puzzle. Interestingly enough, I found the original snake puzzle extremely difficult to grasp, but with this one I found it to be quite a bit easier since every "open" space had to be only 5 spaces in a pentomino shape. It helped force some of the snake squares that otherwise would not have been knowable (which obviously is the point), but for my brain it just worked so much better than the variable number shapes of 1-8 squares. I really enjoyed this, thanks for bringing it to the channel!
I did this when it first came out and got the same result as Simon. I've just revisited it because I couldn't believe that there could be only one solution, so I tried to prove it, one way or the other. I used an alternative notation system to Simon's, which has a couple of advantages. Where there is a choice between two positions, I used 1 in the centre to mean red if choice 1 is made, and 1 in the corner to mean blue if choice 1 is made. Similarly with choice 2, but using 2 as the marker. Where a cell contains both 1 & 2 of the same type, it can be coloured red or blue as indicated. The big advantage of this over Simon's, is that when a subsequent choice, using 3 & 4 for notation, bumps up against a 1/2 marked square, we can easily merge the choices into just one. E,g, if a red 3 is placed alongside a red 1, we can be sure that 3=2 and 4=1 and renumber. This means we don't have to make a decision until it's absolutely forced. It lets us keep the logic simple, and reliable. As soon as we find that one of the options is impossible, you can resolve all of the cells easily. E.g. if option 1 turns out to be impossible, select all cells marked with a corner 2 and turn them blue, and all cells with a centre 2 and turn them red. If we get to the end, and there are still unresolved choices, either we've made an error, or there is an alternative solution, but this is easy to check. The result - it really does have a unique solution. What an amazing puzzle.
It took me 1 hour and 20 minutes :D I had to watch your video a bit to help with the thinking process, but i never watched past what I solved. Thank you :)
I was sceptical trying this one out myself before watching the solve, but the logic flowed so well the entire way and I managed to get the answer. Unfortunately my approach was a bit guess and check initially, but the deeper I got the more i started understanding the implications of placing a snake block.
First time I've ever tried to solve something like this. I managed to get to the state you were in around 10 minutes by myself, and then I had to get some help to where to were at around the 20 minute mark. After that I managed to finish it myself. Really cool type of puzzle!
22:02 you can also solve this by considering top right pentomino that has to contain 5 cells maximum and already has four of them. Since one of the 3 has to be in the pentomino and make it a 5 cell region, 2 (that is next to the 3) therefore can never be in the pentomino as it would make it 6 cell region
I was solving quite the same way until 23:40 when Simon rocketed. He spotted a loop-avoid step and it was huge. I solved it from bottom to top and it took significantly longer on calculating possible branches step by step.
What a beautiful puzzle! I loved how clear your logic was. The upper left corner especially. I learned some new deductive tricks that apply to other puzzles as well.
I'm at the point of having 4 separate "this one or that one" four-cell pentaminos on the board and I don't know what else can be done from here. Really don't want to give in and watch the rest of the video, but I may have to. Edit: Snuck two snake cells off the video and now I'm up to six four-cell pentaminos why ... Complete! Was able to resolve four of the pentaminos shortly after my last comment and it got easier after that. Just weren't that many options left. This and the last snake puzzle were very, very hard for me to work out purely logically. But if I don't do it that way, it doesn't scratch that logic-puzzle itch I'm looking to scratch, so I work through the pain as best I can, lol.
A problem I was facing was that I kept forgetting really simple rules like once a snake goes into a corner, it has to have a way in and a way out without orthogonally touching itself. Which clears up a lot of situations haha
I really enjoyed this puzzle. I did not expect to make heads or tails of it, but pun intended, I successfully made both (and all encompassing pentominoes). Watching you solve it after I did was fascinating, seeing similarities and differences in thought processes. Very fun puzzle.
The F pentomino region of your stomach is so hungry, it orthogonally disconnected to your brain, hence the temporary amnesia. (Quarantine is making me think I'm a comedic genius. My apologies)
Took 5 minutes using bifurcation on the most right pentomino and then bifurcating all possibilities on the top-most s/z piece (all of these very quickly turn out to be impossible, except for one). After those 2 bifurcations it's a straight up solution with only one possible move at each step. I think I was helped by the fact that I never even knew what a pentomino is, so the question "can I flip it?" never even entered my mind.
17:13 (int the video) I coloured in the alternate paths as I noticed there are only two alternate paths through all that (1,2,3) logic and it keeps like that until eventually it resolves itself. So I had black for snake, blue for not-snake and red/green for either snake or non-snake, knowing that all of the red were the same, and all of the blue the other. Made it easy to count pentominos.
True, but it's easy enough to see that there are no possible configurations where the first F isn't flipped. It has to be. Therefore, it must be allowed.
Beautiful, beautiful puzzle! I got a bit disoriented watching the video though, because I used red for pentominoes, green for snake, and blue for potential snake... :P
Took me about an hour and twenty minutes, but I did figure it out before watching the rest of the video! It's been a long time since I've done a good puzzle, and it felt so good to solve, even if I was a bit slow!
I don't know how you manage it but only you are able to make these your thoughts both so easy to understand and Entertaining as you leave us time to think but also move ahead quickly enough to not lose pace
I'm so excited to give this one a try! Since the creator makes chess puzzles, I suspect they'll be more moments of deep calculation here than in the previous "snake" solution -- which turned on clever but ultimately simple inferences from the set-up.
I googled the creator's name thinking I'd find some interesting puzzles. But the first thing was his IMO (international mathematical olympiad rankings, 6th at one point) rankings and the second was his peer reviewed publications on his work in chess problems. What an astounding human?
When i started this puzzle it felt like there would be hundreds of possible solutions first. How amazing that there is just one solution only because of the rules.
Solved it in 17:10. Towards the end I had a choice of two paths and I guessed what looked like the less likely one in the hope I would derive a quick contradiction, but it ended up completing the puzzle.
The Greatest Part (or parts) were:
This is blue, this is blue, this is blue.. this is blue... this is also blue
As he colors 2 blue squares and 3 red squares
he said it just as I was reading your comment xD
Where? Always timestamp, please.
Isham Trivedi 22:17
@@Ishamv3 pay attention please
@@saintgeezus Shut your mouth, please.
Best part of every video is
"This is stunning, unbelievable, how on earth..." and finishing off with "WOW what an amazing puzzle that was"
that wos, mate
I suppose its great that every puzzle is more superlative than the previous one
@@highpath4776 They're good puzzles, Brent.
One thing that’s funny is that I’ve begun talking to myself in your accent when I solve sudokus now
good to know that im not alone, was about to add another 5 weirdness points to my account
I hear Mark's and Simon's voice when I do Sudokus.
Ohh. look look , that's a nice piece of logic.
But it can't be, that would break the puzzle 🧐
This is exactly like hearing LPL's voice when lock picking. I think it is just one of those emulating our role model things we do as people. :D
Me at Orthogonal Church: What does the Orthogonal Bible say about masturbation?
Orthogonal Priest: 3:07
If I could give you more than one like I would.
J R this... this is beautiful
this made me laugh out loud
XD - but what does that mean?
lol
What i like about you, Simon, is how you sometimes explain the ruled out options all the way, but not because it's nessesary, but because it's hilarious. Like "this square becomes snake, and that becomes the head of the snake or the tail of the snake, and we don't need any more of those". Or "we'd have a very very short snake, and the rest of the region is .. just a massive region 117 cells large". Thank you for entertainment!
I like to pause the video and try myself, and then unpause when I get stuck.
"Unpause..... Yep... yep... got that one... he's almost caught up.... No you silly daff, look at that other block.... okay... now give me a hint for the next move.... Ahhhh, I see, pause."
I know, I like to pause and figure it out myself and then think to myself "I figured it out first" when in reality it took me an hour and a half to figure it out while it only took him 20 some odd minutes.
Glad I'm not alone in this
@@carasynthiadune9842 More than a hour here aswell
Same! I was proud of myself for only needing 1 hint this time. I got stuck at the point in the puzzle shown at 9:40.
Just don't pause too early. I spent 15 minutes trying to figure out a starting move before looking at the video again, only to realise that an "F pentomino" was the shape.
Thank you for using blue and red to mark cells instead of your usual green and red, makes the video quite a bit more enjoyable for colorblind people
how do u know what colors he's using if you're color blind
@@shawntalsma5348 I may be colorblind but I'm not deaf when he talks about how he's going to mark those cells red
Dog Face are you dumb? There are different types of color blindness lol fucking idiot
@@vladsterner2655 Chill down.
Must’ve confused you when he said “this is blue, this is blue..” as he marked them red hahah
Nikolai Beluhov actually lives in my city and I know him personally since he has also taught me maths. He is a great mathematician, probably one if the best in the world.
taught* I'm sorry
@@dumbdutch1200 holy shit I made this comment 1 year ago, yet it feels like it was yesterday. And yeah, im retarded for making this mistake, but it was like 3am when i posted that comment, so im sorry eksdi
This was an amazing experience! When I started the video, I screenshotted it (I’m on mobile) and I started the puzzle on my own with you paused in the background. Then when I got stuck halfway through (also nervous that I messed it all up) I played your video and watched you go through the same thought processes I just did! And then when you got to where I was at, I felt like we were bouncing ideas off each other. You would say, “If this was a snake, then...” and I’d say, “I’ve tried that. Once it’s a snake it loops back on itself eventually.” And then you’d realize at the perfect time, “Oh wait! This can’t be a snake so it must be a pentomino!” And then you came up with a brilliant idea that unlocked my brain. And then I paused you and started going again. Then with a single “what if this is a snake” hypothetical situation, I solved the entire rest of the puzzle and had to go back and fill everything in haha I’ve never tried these puzzles on my own, but I’m going to start trying this method. It was a blast to see you go through the same thought process as I did lol made me feel smart
Don’t touch your snake orthogonally, kids
you'll go blind
@@Vradi77 ... unless you touch it diagonally, then you'll be fine.
Always wring it perpendicularly.
@@needfoolthings Or the snake will escape from the board and start to ssssssssssslither around everybody's gardens looking for rats and frogs to eat.
not like this: 31
Literally just beat and was writing "1 2 3 4 5" on all pentomino cells to make sure i had done it right, and right in the last pentomino, as i was typing the 5, instead of pressing 5 I pressed F5, thus reloading the page and sending all my progress to hell
F
for this reason I rarely use the number keys above the letter keys. Number pad is faster, easier, and there is less risk of accidentally pressing an F key.
hahahahahah ripppp
1. why do you need help counting to 5?
2. HOW do you get from 5 to F5? that key is two steps to the right and 1 step up.
@@simpson6700 No, not on every keyboard. It depends on the format of the keyboard. My F5 is also above the 5 with a light left position.
22:19 "This is blue, this is blue" and draws red snake. :-)
Solved it in just a bit under 50 minutes! Thanks for bringing us this wonderful puzzle, it really was worth the try.
I have a 100 % record on this puzzle: tried twice, failed twice.
I finally solved it. It took me two hours and two breaks to for a coffee and a cry, but I solved that friggin snake! It was a lot of fun too. Thanks, Simon!
trying to figure out where the "simplest" comes in to play
that was a pretty simple one. theres way worse
The problem is simple, the solution is complex
This is one of the only ones of his puzzles I've managed to complete :p
Description says “simplest looking”
Simplest statement
“Try and solve it”
*pause*
*solves it using pen and paper*
*resume*
“The link to the grid is below”
🤦♂️
On PC, you don't even have to extend the description to click it :-D This was a fun one!
If it makes you feel better... I was at work and printed off an 11x11 grid from word after 4 attempts of drawing an 11x11 grid.
I only have pens and highlighters so I managed to eventually solve it after a few restarts
@@joopmoop4089 if you needed that, how did you do the ending?
haha, I was one step ahead!... I did it by screenshotting it and then doing it with a photo edit on my phone...
An idiot genius you are
the truly extraordinary part is that he always completes all the puzzles within the video without getting completely stuck or giving up (or at least in the videos i've seen so far....)
There's a blooper reel somewhere of the ones where he doesn't complete them in a sensible time frame!
Every time he says 'good grief' or 'yes look at this' I get so excited and happy
This whole puzzle seems to work off of the effect of the initial conditions propagating through the board, which is why it can be done with such little information. That F piece sets up a ripple effect that goes up to the opposite corner, and then "echoes" back to fill in the blanks. Really clever puzzle making
That is not really an explanation though, is it? It is even a bit circular.
@@mrluchtverfrisser Not an explanation exactly, no. It's an observation of how a puzzle with such little starting information can have a unique solution. It starts off with the given F piece, which leads to x, leads to y, leads to z etc, with a bit of information missing each time. The information found is still enough to make determinations of what the rest of the puzzle looks like. It's only once it hits another boundary wall that you can start going back and filling in the missed information.
Not exactly an explanation on how to solve it, just an interesting way the puzzle plays out
@@ItsSansom I am not refering to an explanation for how to solve it, but an explanation for why such little information is sufficient.
@@mrluchtverfrisser Ah, I see, sorry for the misunderstanding. Fair point, I see the circular logic. Made sense to me at the time, but now I'm thinking if you move the given information slightly, or change the given pentonimo type, you can't guarantee if it has a unique solution, if any. I'm sure there's some math that can be used to find out from just the initial informatiob, but that's way over my head to figure out
@@ItsSansom yeah, it'd be pretty interesting to see the precise mechanics of this puzzle.
-Tried when I first got home
-Took 23:00 and didn't get anywhere
-cooked, ate, cleared my head
-decided to take another crack at it
-did it in 4:00
This puzzle is actually pretty intuitive. You use a whole lot of logicking that I didn't seem to need. I drew in the puzzle the same as you did until 9:22. Then from there the options become not-instantly-obvious and you just use a second colourset (hypothetical snake and hypothetical pentomino) to fill out hypothetical pentominos and the snakepath that it forces until you run into a branching or touching pentomino problem. And every time you confirm a section you override the colours to confirm it and then continue off of that. If you first get the right path to that red spot created on r8c6 after going to the top-right corner and then the bottom path and it up to the top left corner simultaneously, it's pretty easy to figure out which pentominos to use. I did it more than twice as fast just on spacial awareness. Because no two pentominos can go next to eachother the snake has to get within a distance of 2 of each corner. After the first F is placed it's obviouis which snakehead/tail goes to which corners. The big thing that matters is that if a pentomino is against the edge, the snake has to stick to it until it's past it.
Once you're done, you should select all the cells of the snake that touch diagonally. You'll see that they are crucial for the seperation (and thus shape of) the pentominos.
his commentary is my favorite part, it really brings the video together
I watched around 10 videos from this channel and Simon's way of interacting with the puzzles and talking about them seemed familiar to me... At the end of this video, it struck me: He is the Steve Irwin of puzzles. "That is beauuutiful. My goodness"
Took me less than 40 minutes.
Much of that time was spent discerning whether or not the F pentomino could be flipped in the very beginning, but all other possibilities were just impossible.
Took me close to an hour, including one restart after I ended up with a square that couldn't be snake nor pentino, but I did it!
Absolutely amazing! Wouldn't mind seeing more of these on the channel!
I swear this is the most wholesome channel on youtube
"Do give this puzzle a go"... well, I would, but I really have no idea where to start with these things, or where to continue. I can probably work out how to finish.
I started out by going west, ran into a stopping point after reaching the wall, went north after that.
did not realize I was watching your video on x2 speed, got much more encouraged when I realize that you and I were solving at the same rate.
28:14 Got stuck in the top left corner and had to resort to a lengthy bifurcation method. Your solve was much prettier, Simon! Excellent puzzle
7:18 for a rigorous solve here. I spent about a minute knocking out most of the bottom right corner, then 3 minutes making very slow incremental progress on the right side until it all instantly resolved. The top left behaved somewhat similarly.
I checked the original GMpuzzles page for the target times and apparently I missed the master time by just 3 seconds.
Well done. Took me about 15 min. ;-)
I was able to solve this without even considering the F shape (it just ended up working out of course since there's a unique solution). It took a bit of trial and error at the start though. It was a really fun puzzle. I like these kind of logic puzzles so it'd be nice to see more.
I feel like i"m playing "The Witness" all over again. Just found this channel. Quite enjoy the content.
Daniel Cappuccio I was thinking this after bingeing Joseph Anderson vids
Brilliant puzzle. Prefer to see all of these different kind of puzzles to sudokus on the channel.
That was so much fun to watch! I love your passion. It just makes me keep watching because I get so excited to see what the next steps are!
Just completed this before watching the video, as suggested!
For some reason I could only think in Simon’s voice and mannerisms which I’m convinced helped me solve it
It's awesome that a fellow Bulgarian created such an amazing puzzle 👏
I enjoyed the 30min I spent solving this. Thanks for the suggestion.
At the beginning I wasn't that interested but then the 27 minutes felt like a minute. Please do more of these if you can.
In addition to his logical talent, Simon has fantastic teaching abilities. Cool! I appreciate all popularizers of knowledge and science like George Gamow (modern physics), Hugo Steinhaus (mathematics) and ... Simon (logical thinking)
45:30 for me, that felt amazing to solve, even if I was a bit slow. I did it the same way as the video for the majority of it, which is always a good feeling, but we diverged near the end. I knew the lower half of the backwards C at the top at 23:30 had to connect to the middle portion in some way, so I checked each of the possibilities that could result in a correct pentomino in the middle and solved the overlaps, the rest of the logic followed fairly easily.
Absolutely something to be proud of regardless of how long it takes! Super satisfying puzzle
I managed it in 55 minutes, and the time passed quickly! Super fun challenge all the way, just the right amount of difficulty without too much frustration. Really well designed puzzle.
Very relaxing to watch and listen. Cool puzzle. Great finish indeed!
been watching the channel for a week or two now. i love logic puzzles, but am still trying to get the hang of the more complex sudoku puzzles. this is the first puzzle on the channel i actually tried before watching the video, and actually was able to get through it successfully! feels good
Lovely puzzle! It took me 22:57 to solve. I found it easier to bifurcate when I got to the point that Simon reached at 10:27. It didn't take long to rule out having row 5, column 11 as part of a pentomino.
This took me just shy of 15 minutes to complete. Its a brilliant puzzle. Interestingly enough, I found the original snake puzzle extremely difficult to grasp, but with this one I found it to be quite a bit easier since every "open" space had to be only 5 spaces in a pentomino shape. It helped force some of the snake squares that otherwise would not have been knowable (which obviously is the point), but for my brain it just worked so much better than the variable number shapes of 1-8 squares. I really enjoyed this, thanks for bringing it to the channel!
Took me about an hour. Incredibly fun puzzle. Solving 2 of these problems on your videos made me a subscriber
Fantastic puzzle, fantastic video. Well done.
I did this when it first came out and got the same result as Simon. I've just revisited it because I couldn't believe that there could be only one solution, so I tried to prove it, one way or the other.
I used an alternative notation system to Simon's, which has a couple of advantages. Where there is a choice between two positions, I used 1 in the centre to mean red if choice 1 is made, and 1 in the corner to mean blue if choice 1 is made. Similarly with choice 2, but using 2 as the marker. Where a cell contains both 1 & 2 of the same type, it can be coloured red or blue as indicated. The big advantage of this over Simon's, is that when a subsequent choice, using 3 & 4 for notation, bumps up against a 1/2 marked square, we can easily merge the choices into just one. E,g, if a red 3 is placed alongside a red 1, we can be sure that 3=2 and 4=1 and renumber. This means we don't have to make a decision until it's absolutely forced. It lets us keep the logic simple, and reliable. As soon as we find that one of the options is impossible, you can resolve all of the cells easily. E.g. if option 1 turns out to be impossible, select all cells marked with a corner 2 and turn them blue, and all cells with a centre 2 and turn them red. If we get to the end, and there are still unresolved choices, either we've made an error, or there is an alternative solution, but this is easy to check.
The result - it really does have a unique solution. What an amazing puzzle.
Fantastic. Genius setting.
wow! pure joy to watch the master!
This was the best puzzle I ever solved. Thank you for sharing.
It took me 1 hour and 20 minutes :D I had to watch your video a bit to help with the thinking process, but i never watched past what I solved. Thank you :)
An absolutely lovely puzzle. I love numberlink-adjacent puzzles like these because they produce such lovely patterns.
I was sceptical trying this one out myself before watching the solve, but the logic flowed so well the entire way and I managed to get the answer. Unfortunately my approach was a bit guess and check initially, but the deeper I got the more i started understanding the implications of placing a snake block.
First time I've ever tried to solve something like this. I managed to get to the state you were in around 10 minutes by myself, and then I had to get some help to where to were at around the 20 minute mark. After that I managed to finish it myself. Really cool type of puzzle!
27:42 it was very entertaining to solve! Although I did a lot of trial and error when there were no longer any obvious answers
22:02 you can also solve this by considering top right pentomino that has to contain 5 cells maximum and already has four of them. Since one of the 3 has to be in the pentomino and make it a 5 cell region, 2 (that is next to the 3) therefore can never be in the pentomino as it would make it 6 cell region
I really liked it. Especially past the halfpoint, where it basically just unravels by itself as you go on.
Thank you for the intro telling us to try it. I didn't plan on it but I'm having a blast going through it.
Wow, this is the first video of this guy I've seen - he's amazing!
35:26, what an amazing puzzle!
Solved in about 15 minutes, very enjoyable.
I was solving quite the same way until 23:40 when Simon rocketed. He spotted a loop-avoid step and it was huge. I solved it from bottom to top and it took significantly longer on calculating possible branches step by step.
What a beautiful puzzle! I loved how clear your logic was. The upper left corner especially. I learned some new deductive tricks that apply to other puzzles as well.
I loved this. I look forward to more in the future. Great work brother
I'm at the point of having 4 separate "this one or that one" four-cell pentaminos on the board and I don't know what else can be done from here. Really don't want to give in and watch the rest of the video, but I may have to.
Edit: Snuck two snake cells off the video and now I'm up to six four-cell pentaminos why ...
Complete! Was able to resolve four of the pentaminos shortly after my last comment and it got easier after that. Just weren't that many options left.
This and the last snake puzzle were very, very hard for me to work out purely logically. But if I don't do it that way, it doesn't scratch that logic-puzzle itch I'm looking to scratch, so I work through the pain as best I can, lol.
A problem I was facing was that I kept forgetting really simple rules like once a snake goes into a corner, it has to have a way in and a way out without orthogonally touching itself. Which clears up a lot of situations haha
So fun to watch these videos. Way beyond my capabilities but really nice puzzles. Thanks
I really enjoyed this puzzle. I did not expect to make heads or tails of it, but pun intended, I successfully made both (and all encompassing pentominoes). Watching you solve it after I did was fascinating, seeing similarities and differences in thought processes. Very fun puzzle.
meanwhile I’m trying to figure out why I went into my kitchen
Because the hunger beckons!
The F pentomino region of your stomach is so hungry, it orthogonally disconnected to your brain, hence the temporary amnesia.
(Quarantine is making me think I'm a comedic genius. My apologies)
That's because you can't pencil in your kitchen.
Took me an hour and 2 hints from you, but I could do it by myself... It is an extraordinary puzzle.
Took 5 minutes using bifurcation on the most right pentomino and then bifurcating all possibilities on the top-most s/z piece (all of these very quickly turn out to be impossible, except for one). After those 2 bifurcations it's a straight up solution with only one possible move at each step.
I think I was helped by the fact that I never even knew what a pentomino is, so the question "can I flip it?" never even entered my mind.
17:13 (int the video) I coloured in the alternate paths as I noticed there are only two alternate paths through all that (1,2,3) logic and it keeps like that until eventually it resolves itself. So I had black for snake, blue for not-snake and red/green for either snake or non-snake, knowing that all of the red were the same, and all of the blue the other. Made it easy to count pentominos.
I prefer puzzles over sudokus so much!
Would've been good to know in the instructions whether you can flip the F.
Now, can you or can you not?
@@sunriselg yes, impossible as is
Indeed, I assumed it could be rotated but not be reflected
True, but it's easy enough to see that there are no possible configurations where the first F isn't flipped. It has to be. Therefore, it must be allowed.
I'm actually glad they didn't, you quickly realize it's not possible any other way.
Very nice, tried it for myself, a bit slow at the start but once you reach the end it becomes very easy
Outstanding puzzle. Really enjoyed that.
Beautiful, beautiful puzzle! I got a bit disoriented watching the video though, because I used red for pentominoes, green for snake, and blue for potential snake... :P
Took me about an hour and twenty minutes, but I did figure it out before watching the rest of the video! It's been a long time since I've done a good puzzle, and it felt so good to solve, even if I was a bit slow!
That was stunning! I am now a subscriber!
I stumbled at the end and wasn't able to finish it but I very much enjoyed it! Would love to see more puzzles like this in the future :)
I don't know how you manage it but only you are able to make these your thoughts both so easy to understand and Entertaining as you leave us time to think but also move ahead quickly enough to not lose pace
I didn't realize the F pentomino could be mirrored and still count.
That was my problem as well.
A wonderful puzzle, I had found the solution by chance, but had to go back to prove to myself it was unique
This was so fun to watch! Bravo!
Great puzzle. Would be great to see one unique puzzle a week.
Is there a possibility that you can make a video of how you are changing the programm for the puzzles??
A little under 14 minutes for me! Love these snake puzzles
I'm so excited to give this one a try! Since the creator makes chess puzzles, I suspect they'll be more moments of deep calculation here than in the previous "snake" solution -- which turned on clever but ultimately simple inferences from the set-up.
37:13 for me. Ended up with the chain of contingent cells on the right. Once I got to the cell at 23:56 ion the vid I just eyeballed it. Fun puzzle!
This is such a neat puzzle! I would love to see more logic puzzles like this. I feel like they would be really fun to solve.
I googled the creator's name thinking I'd find some interesting puzzles. But the first thing was his IMO (international mathematical olympiad rankings, 6th at one point) rankings and the second was his peer reviewed publications on his work in chess problems. What an astounding human?
This is an amazing puzzle! So fun to watch, I wanna do it now ✨
This was so good. Thanks.
When i started this puzzle it felt like there would be hundreds of possible solutions first. How amazing that there is just one solution only because of the rules.
What a truly lovely puzzle
What a great puzzle by a fellow Bulgarian =}
Simon: please try this puzzle
Me: I can't even puzzle out what the rules mean XD
same! I just watch him, and what he says makes sense, but I still just stare like O_O
Great Fun! I really enjoyed that puzzle. Took me a lot longer to figure it out than you did though...
That was a beautiful puzzle and solution. Absolutely brilliant!
Solved it in 17:10. Towards the end I had a choice of two paths and I guessed what looked like the less likely one in the hope I would derive a quick contradiction, but it ended up completing the puzzle.