puzzle 8: "You are encouraged to pause the video then look for solve; It's unlikely you'll find the solution to these last few in time" me: i havent found solves for any of the puzzles xD
i can imagine in like 5 years, there'd be a gifted school program that trains kids with PCs rather than high level maths. Its so much more intuitive at brain stimulation, yet somehow feels much harder and relies on really creative thinking. When i do maths i just look at the questions, spot specific key features, and just applies formulas. now this, even with columinar parity, you still need a lot of creative thinking. Or its just that mental tasks of these sorts are much harder without paper/instant feedback
I've noticed Tetris is very mathematical and also has many relations to chess. 4 wide is interesting because if you have 3 blocks on your 4 wide board, it will never be perfectly clearable, and because every tetromino consists of 4 blocks, you can clear a line with every piece placed indefinitely. You can also think of Chess GMs: if you've watched or read The Queen's Gambit, you may understand some chess players can easily calculate lines in their head and visualize a board; I think that if a top chess player learned about Tetris perfect clears, they could easily find them. The columnar parity concept (which I don't understand the logic of yet) is what I assume to be another crazy mathematical concept of Tetris. The whole visualization talent thing also can explain how some people find it trivial to solve the puzzles in this video and how some can't even solve the first one. I don't think its something that can be learned either; if you can't naturally play chess or find PCs well, I've only ever seen anyone excel with such a restraint by learning the hard way, like being told that controlling the center of a Chessboard is important, but not actually knowing why. Or columnar parity, which I never would've found out on my own, but maybe a talented person would have realized after ten PC mode rounds.
this video has shown to me that I am extremely bad at pcs and I will forever stick with failing half of my dpc loop solves instead of becoming a pc spammer _not a single one. I did not solve a single one and I’ve been trying to get better at seeing pc solves for a while now._
Same bruh.. thought i'd get at least one. Worst part is i know all these kicks/tricks lol, just couldnt apply it. We're all gonna make it in time, I hope
1:00 "this is a completely normal solve" I have never seen this in my entire life. thank you for showing. I only got #1 and #6. Very interesting and well explained!
When i first watched this video i had just started getting interested in pcs and could only solve the 1st puzzle in there. After that, i really took an interest in pcs, so i joined pc gang and started playing pc mode regularly. Coming back to this video 8 months later i can proudly declare my improvement: now being able to solve the grand total of 2/10(!) puzzles. But maybe the real treasure was the solves we discovered along the way.
I have another set of 10 puzzles in mind, but this video took me quite a while to put together But a sequel to this video is definitely something I have in mind
I missed all puzzles, including the normal PCO solve. Perfect clear solving sounds interesting although, so I will start learning them(reminds me of the rubik's cube lol). This will be fun maybe
It seems that one could draw some more powerful statements from the columnar colouring e.g. by comparing exact values of white and black minos (which are affected by horizontal position of LJT and rotation of LJ), but I guess it is to unpractical to form a simple rule out of it?
don't worry - the last couple of puzzles are kinda targeted at people who have already gotten notable (like maybe 50+ consecutive PC) results who'll already know some of the tricks to solving them The earlier puzzles serve to show some ideas that you yourself can hopefully apply pretty quickly to your own runs
there's an easier solve for puzzle 7, i think. 1. hold T, put L on far left (no rotating) 2. put O between J and S, in the hole, which clears a line 3. rotate J 180 and put it on top of where the O was, just to the right of the L 4. place the I and S (do an S-spin) 5. the L gets skimmed, allowing a Z-spin
In the last one you jump to the conclusion that T must be unused or horizontal. But holding J and placing vertical T would also fulfill the rule. Was there any other reason why we can cut that solution branch so early?
oh you raise a good point, I kinda cut it out from my own PC intuition This is somewhat of an arbitrary assumption that I've made for a while, but with one L/J in the setup on the board, strictly one of L/J in the queue, and strictly one T in the queue, it's unlikely for the L/J to be left on hold with T vertical I think this assumption also is because of how late the T comes in the queue. This is because I know the following statement is true (which *can* tangibly be proven with columnar parity): Any 2nd PC with 1 of L/J and no T in the first 4 piece will have a forced L/J save if the T comes last in the next bag, because T cannot be placed vertically as the last piece (due to how SRS rotations work). but really I kinda discarded the possibility of that being an outcome from my own experience and kinda irresponsibly assumed that wasn't going to be a solution
Could you explain a little more how this theorem fits into the puzzle 10? Cause I'm not that into PC theory yet, and as far as I understand this statement says about saving L/J, not T. Thank you for the response though.
@@ZeroXbot man I don't think i'm doing a very good job of explaining myself here :( I feel like I'm just going to be repeating myself again without doing much explanation The last theorem, (the one pertaining to only 2nd PCs with strictly one of L/J and no T within the first 4 pieces) is about saving L/J because you are guaranteed 2 L pieces and 1 J piece, or 2 J pieces and 1 L piece within the 11 pieces you can see from (due to the bag distribution being 4 pieces from the current bag + you can see 7 pieces from the next bag). T can affect parity or not affect parity depending on its orientation, but if T is specifically last in the bag, the only possible orientation for it to be placed is with the tip facing down (so 180 from its spawn orientation). This means that it is *not* placed vertically, and only 2 out of the 3 L/J pieces are used, leaving either an L or J in hold. This PC puzzle is similar (you have IJSO as the first 4 pieces on the field), but instead of being guaranteed both of L and J that you would have in an ordinary bag, you only have the J, which to me meant that this J piece could not have been saved by the end of the bag (but I don't think I can show a mathematically precise proof for that; I was going off by intuition) The point I was trying to make with this is, a late T (which I define to be the last 2 pieces of which a piece can be used in a PC solution) in the queue is unlikely to be vertical, due to the nature of the T piece only being able to be placed in one orientation, which is not vertical. The only way that I could understand a T piece being vertical if it's within the last 2 pieces of a bag is if you had another L/J within the last 2 pieces of a bag to match up with that and make the count of columnar parity-affecting pieces equal. Perhaps this is better explained with a visual aid, like diagrams... I'm struggling to try explain this rigorously through text only. Apologies for my somewhat of a non-explanation.
@@fesh wow, no problem, I didn't even expect such thorough explanation. Ok, so I think I'm getting a grasp of this. Let me rephrase what you wrote in a way I understood + some my additional thoughts. If we try to put vertical T: 1. Because J is early in the queue we have to hold it through the whole process. 2. Thus, in the end we need to put T (vertical) and Z in that order. 3. You suggested that T last or second to last can be put then only if paired with L/J, but here it is theoretically possible to put T with Z on top using spin. 4. Then you could probably visualize every such placement (there are 3 here only if I'm correct) and eliminate one by one: 4.1. Leftmost one creates L dependency 4.2. Center one would require late J (with impossible spin triple on top of that) 4.3. Rightmost one isolates 3 mino area Perhaps such elimination could be done in any initial setup and your proposition would be true :D Anyway, thanks for taking your time to write all this EDIT: Well, after giving another though... in 4.1. L dependency is certainly not always impossible but right side could hide some difficulty
@@ZeroXbot tl;dr i just kinda used my gut feeling and was like theres no way J will be on hold at the end lol still wishing i had a better way to explain this, i guess I still have a lot to learn
I used a program called four-tris, serves as a good training tool because you can edit queue and you can also undo/redo if something goes wrong discord.gg/XnrvdZj there's a server with the downloads all linked there, if you want you can just join, download and leave lol
4 and 9 took me way too long and 8 took me a bit of time but I got all the others pretty quickly how does cabo have the gall to call 9 easy and straightforward but not know how to solve 5 others
well from my understanding it's half of why checkerboard parity works tinyurl.com/pctheory should lead you to somewhat of an explanation under the "Parity" header
@fesh I imagine it is more common for the hardcore players. I'm just now looking into PC's just to have a better understanding of the downstacking/ ideal structures. I prefer to just casually freestyle them as the opportunity presents itself.
this columnar parity thing has unlocked something in my brain i feel more powerful now
lets gooo
puzzle 8: "You are encouraged to pause the video then look for solve; It's unlikely you'll find the solution to these last few in time"
me: i havent found solves for any of the puzzles xD
i can imagine in like 5 years, there'd be a gifted school program that trains kids with PCs rather than high level maths. Its so much more intuitive at brain stimulation, yet somehow feels much harder and relies on really creative thinking. When i do maths i just look at the questions, spot specific key features, and just applies formulas. now this, even with columinar parity, you still need a lot of creative thinking. Or its just that mental tasks of these sorts are much harder without paper/instant feedback
lol imagine pc competitions
@@kjl3080 smolfeesh no 1
@@kjl3080 they kinda exist, of course only inside the tetris community
I've noticed Tetris is very mathematical and also has many relations to chess. 4 wide is interesting because if you have 3 blocks on your 4 wide board, it will never be perfectly clearable, and because every tetromino consists of 4 blocks, you can clear a line with every piece placed indefinitely. You can also think of Chess GMs: if you've watched or read The Queen's Gambit, you may understand some chess players can easily calculate lines in their head and visualize a board; I think that if a top chess player learned about Tetris perfect clears, they could easily find them. The columnar parity concept (which I don't understand the logic of yet) is what I assume to be another crazy mathematical concept of Tetris.
The whole visualization talent thing also can explain how some people find it trivial to solve the puzzles in this video and how some can't even solve the first one. I don't think its something that can be learned either; if you can't naturally play chess or find PCs well, I've only ever seen anyone excel with such a restraint by learning the hard way, like being told that controlling the center of a Chessboard is important, but not actually knowing why. Or columnar parity, which I never would've found out on my own, but maybe a talented person would have realized after ten PC mode rounds.
this video has shown to me that I am extremely bad at pcs and I will forever stick with failing half of my dpc loop solves instead of becoming a pc spammer
_not a single one. I did not solve a single one and I’ve been trying to get better at seeing pc solves for a while now._
Ono
Same bruh.. thought i'd get at least one. Worst part is i know all these kicks/tricks lol, just couldnt apply it. We're all gonna make it in time, I hope
not even the first puzzle? :(
I have been doing a lot of the easier PCs lately and these are not the easiest. These are middle to advanced.
#skill_issue
The columnar parity thing feels like forbidden knowledge
1:00 "this is a completely normal solve" I have never seen this in my entire life. thank you for showing.
I only got #1 and #6. Very interesting and well explained!
haha thanks for giving me credit bro, really appreciate it :) i do like how yours gives a full explanation though on each solve, im liking this a lot
Denz is that you
When i first watched this video i had just started getting interested in pcs and could only solve the 1st puzzle in there. After that, i really took an interest in pcs, so i joined pc gang and started playing pc mode regularly. Coming back to this video 8 months later i can proudly declare my improvement: now being able to solve the grand total of 2/10(!) puzzles. But maybe the real treasure was the solves we discovered along the way.
an improvment of 100% PCs if you think about it
True hahahah
Great video as always!
Never realized how important knowing parity was :D
this was really good. can we get more of these types of videos?
I have another set of 10 puzzles in mind, but this video took me quite a while to put together
But a sequel to this video is definitely something I have in mind
Skipped this video when first saw it. Now motivated me to try 10 pc badge.
edit: improved from 3 to 4!
I literally got 7 pcs in a row without knowing any 100% pc setups or anything except pco lol, I guess luck is just with me
thank you my PC vision has expanded
🍭
Actually managed to see three of these. Only started learning more than Vertical PCO about a week ago. Good stuff.
Woah, knowledge+
after learning about this columnar parity thingy, stuff got a lot easier than I expected (got 7/10 PCs)
7/10 is pretty fantastic actually
considering a couple of these solves are only expected to be known if you've already seen them
I'm still a beginner at PCs but this has helped a lot- also good choice of music!! Thanks
love stardew's soundtrack
when you said I should pause now to think about the answer, as if I didn't pause for 1 minutes at all the ones before and failed every of them
I could solve the first few but the rest were not doable lol
average dpc pc vision
joking ily cab
puzzle 6 legit took me 15 minutes how do people even see these solutions
idk why im watching this at 3am but imma watch it later after i woke up
thnx for the lesson feesh-sensei
Tetris theory can go pretty deep...
As an s- player i am very confused, will look back in a few months, but the ljvt rule is cool to keep in mind
solving #9 is the peak of my tetrio career
maybe i overrated its difficulty a bit but definitely took me a minute for my first time
Thank you.
I feel like I want to try 10PC again.
Nice vid man, very informative.
very pog video thankyou mr feesh
Really neat puzzles. I couldn't find 7, 8, or 9 on my own but I was so close each time ;;
My brain hurts
quite frankly, i didnt get 1 right, im just built different...
_"Free your mind."_
-Morpheus
these were really good puzzles... my bran isn't big enough for this though
hopefully you were able to take something away from the video for future puzzles, though
i need more since i still miss pc :]
I missed all puzzles, including the normal PCO solve. Perfect clear solving sounds interesting although, so I will start learning them(reminds me of the rubik's cube lol). This will be fun maybe
when I first started learning PCs i had the same joy as when i started cubing so hopefully you find it fun
uwaaah ty this is great
“Tetris isn’t that difficult” my friend said
amazing video
the columnar parity rule is really interesting, i'm quite curious on the proof for it
tinyurl.com/pctheory should have somewhat of a proof of it but i don't think it's like academically rigorous or anything
It seems that one could draw some more powerful statements from the columnar colouring e.g. by comparing exact values of white and black minos (which are affected by horizontal position of LJT and rotation of LJ), but I guess it is to unpractical to form a simple rule out of it?
this video made my smooth brain more wrinkly than my grandma
Nice! More guides like this!
thank you for sharing your brain wealth
this is a good video but the puzzles are way too hard for me; i'm still learning how to do basic jaws solves
don't worry - the last couple of puzzles are kinda targeted at people who have already gotten notable (like maybe 50+ consecutive PC) results who'll already know some of the tricks to solving them
The earlier puzzles serve to show some ideas that you yourself can hopefully apply pretty quickly to your own runs
Just. Insane. 😂
10/10 B) (totally didnt pause for 5 minutes on the last one)
poggers for getting all 10 tho
there's an easier solve for puzzle 7, i think.
1. hold T, put L on far left (no rotating)
2. put O between J and S, in the hole, which clears a line
3. rotate J 180 and put it on top of where the O was, just to the right of the L
4. place the I and S (do an S-spin)
5. the L gets skimmed, allowing a Z-spin
doesn't work
@@fesh oh wait never mind :\
In the last one you jump to the conclusion that T must be unused or horizontal. But holding J and placing vertical T would also fulfill the rule. Was there any other reason why we can cut that solution branch so early?
oh you raise a good point, I kinda cut it out from my own PC intuition
This is somewhat of an arbitrary assumption that I've made for a while, but with one L/J in the setup on the board, strictly one of L/J in the queue, and strictly one T in the queue, it's unlikely for the L/J to be left on hold with T vertical
I think this assumption also is because of how late the T comes in the queue. This is because I know the following statement is true (which *can* tangibly be proven with columnar parity):
Any 2nd PC with 1 of L/J and no T in the first 4 piece will have a forced L/J save if the T comes last in the next bag, because T cannot be placed vertically as the last piece (due to how SRS rotations work).
but really I kinda discarded the possibility of that being an outcome from my own experience and kinda irresponsibly assumed that wasn't going to be a solution
Could you explain a little more how this theorem fits into the puzzle 10? Cause I'm not that into PC theory yet, and as far as I understand this statement says about saving L/J, not T.
Thank you for the response though.
@@ZeroXbot man I don't think i'm doing a very good job of explaining myself here :( I feel like I'm just going to be repeating myself again without doing much explanation
The last theorem, (the one pertaining to only 2nd PCs with strictly one of L/J and no T within the first 4 pieces) is about saving L/J because you are guaranteed 2 L pieces and 1 J piece, or 2 J pieces and 1 L piece within the 11 pieces you can see from (due to the bag distribution being 4 pieces from the current bag + you can see 7 pieces from the next bag). T can affect parity or not affect parity depending on its orientation, but if T is specifically last in the bag, the only possible orientation for it to be placed is with the tip facing down (so 180 from its spawn orientation). This means that it is *not* placed vertically, and only 2 out of the 3 L/J pieces are used, leaving either an L or J in hold.
This PC puzzle is similar (you have IJSO as the first 4 pieces on the field), but instead of being guaranteed both of L and J that you would have in an ordinary bag, you only have the J, which to me meant that this J piece could not have been saved by the end of the bag (but I don't think I can show a mathematically precise proof for that; I was going off by intuition)
The point I was trying to make with this is, a late T (which I define to be the last 2 pieces of which a piece can be used in a PC solution) in the queue is unlikely to be vertical, due to the nature of the T piece only being able to be placed in one orientation, which is not vertical. The only way that I could understand a T piece being vertical if it's within the last 2 pieces of a bag is if you had another L/J within the last 2 pieces of a bag to match up with that and make the count of columnar parity-affecting pieces equal.
Perhaps this is better explained with a visual aid, like diagrams... I'm struggling to try explain this rigorously through text only. Apologies for my somewhat of a non-explanation.
@@fesh wow, no problem, I didn't even expect such thorough explanation. Ok, so I think I'm getting a grasp of this. Let me rephrase what you wrote in a way I understood + some my additional thoughts.
If we try to put vertical T:
1. Because J is early in the queue we have to hold it through the whole process.
2. Thus, in the end we need to put T (vertical) and Z in that order.
3. You suggested that T last or second to last can be put then only if paired with L/J, but here it is theoretically possible to put T with Z on top using spin.
4. Then you could probably visualize every such placement (there are 3 here only if I'm correct) and eliminate one by one:
4.1. Leftmost one creates L dependency
4.2. Center one would require late J (with impossible spin triple on top of that)
4.3. Rightmost one isolates 3 mino area
Perhaps such elimination could be done in any initial setup and your proposition would be true :D Anyway, thanks for taking your time to write all this
EDIT: Well, after giving another though... in 4.1. L dependency is certainly not always impossible but right side could hide some difficulty
@@ZeroXbot
tl;dr i just kinda used my gut feeling and was like theres no way J will be on hold at the end lol
still wishing i had a better way to explain this, i guess I still have a lot to learn
My brain exploded lmao
columnar parity added the 2nd 0 in the 100% in ilsz for me
W
Guess I have to learn solves and columnar parity back to pc gallery I go
is there an explanation on why the column parity thingy works?
tinyurl.com/pctheory should take you there
@@fesh thanks
what version of tetris did you use for this? It kinda looks like worldwide combos
I used a program called four-tris, serves as a good training tool because you can edit queue and you can also undo/redo if something goes wrong
discord.gg/XnrvdZj there's a server with the downloads all linked there, if you want you can just join, download and leave lol
@@fesh ok
oh right i've found my answer
Comfy vid
4 and 9 took me way too long and 8 took me a bit of time but I got all the others pretty quickly
how does cabo have the gall to call 9 easy and straightforward but not know how to solve 5 others
what game is used in the video for pc demonstration
That's a program called four-tris
now if only if 180 solves were in all tetris games :(
hey smolfeesh, can I know what website/app you're using in this video?
i think u found your answer in another comment, but it's four-tris by Fio
@@fesh yep I did find my answer
it took me three attempts to literally tap on the three dots to edit this reply
einstein's competition
haha i wish
I want to know why the columnar parity rule works
well from my understanding it's half of why checkerboard parity works
tinyurl.com/pctheory should lead you to somewhat of an explanation under the "Parity" header
@@fesh oh the explanation is much simpler than I expected, thanks!
Does someone have an explanation or a link to an explanation for columnar parity?
tinyurl.com/pctheory might be useful
PC puzzle very pro :pog:
u are pog
i'm doing this at midnight help
go bed
gamer
as a C rank player on tetrio,
*what*
watching mliao
Solved all 😎 (jk i only got like 4😭)
Nvm i got 2
I only got 2....
But again I only do sdpc dpc
I solved 3 & 4 but decided not to continue. These are in no way common structures. At least not in my own games.
That's fair - most of these are more geared towards consecutive PC players and are a pretty niche skill otherwise
@fesh I imagine it is more common for the hardcore players. I'm just now looking into PC's just to have a better understanding of the downstacking/ ideal structures. I prefer to just casually freestyle them as the opportunity presents itself.
901
Ok
what the hell is this game
good game
very nnai
Fast
boo
no u