PC tutorial

PART 1

Welcome to the Perfect Clear guide, which will teach everything about the PC/AC clear in modern tetris.

Intro

Benefit and Disadvantages

4 line PC Openers

https://four.lol/perfect-clears/opener

https://four.lol/perfect-clears/grace-system

https://www.youtube.com/watch?v=yFHmfsjGNj8&ab_channel=kvodeth 0:09

https://www.youtube.com/watch?v=wotCR0604qQ&ab_channel=smolfeesh 2:44

2l PC

There is a chance to get a 2 line PC, though it is rare

Just memorise them and see if your next queue has the required pieces after a pc solve to do a 2l

2nd PC

After your initial PC you will have 4 pieces to spare

These are used to create a setup to solve

The PC solve uses 6 pieces from the next bag, leaving 1 piece to spare for 3rd PC

Outro

That's all for this video, but there is definitely more to discover about PC's

This took WAY TOO LONG to make and edit so

Consider Subscribing and checking out other people to master

THE PERFECT CLEARS

Look out for part 2, which will come out 'soon'

PART 2

Welcome back to the PC tutorial/guide

This video is the second part of the PC tutorial

This is a shorter video but necessary to understand why PCs work

Lets get right into it

The randomiser

To understand loops, you must understand the bag system

This is the system tetrio uses to randomise the pieces

This can be imagined like a hat/bag, with all 7 pieces in

Each piece is randomly drawn until all of them have been taken out

Then a fresh bag is created and the cycle repeats

For Tetris, this means you are guaranteed each of the piece types once per 7 pieces

This is why openers work, because you can guarantee a s,z,t,o,I,l and j piece each time

If you have done openers for long by now, you would have realised this as well

How PC loop works

When you do a four height pc, you clear 4 lines (duh)

If each line is 10 blocks, and each piece is 4 blocks, it takes 2.5 pieces to clear a line

This means it takes 10 pieces to do a 4l PC

This means for the first PC, you used 7 pieces from the 'first bag of pieces' and then 3 from the 'next bag'

This can be visualised better using a line separating each bag, as well as the piece counter

PC loop example

See how 7 pieces from the first bag were used for the setup

Then 3 from the next bag were used for the solve

This leaves 4 pieces from the next bag

Which are used for the setup of your next pc

This pc is called 2nd PC, because it's the 2/7 pc done in the loop

But in order to solve the PC, 6 more pieces are needed, as 10 (total pieces needed for pc) 4 (pieces used for setup) leaves 6

So after solving this pc, a remainder piece is left, which is in your hold queue

PC Loop

This goes on until 7 PCs are done, which is where there are no remainder pieces from previous bags

If you want to know all the extra pieces and what bags are used, here is a chart from four.lol showing this:

Also a useful method if you forgot what pc you are on (from hosef video):

Look at your piece counter on the left

Multiply that by 5

Use mod(7) and finally add 1

Here's a worked example:

I have 865 pieces, so I do 865*5 = 4325

( 4325 Mod 7 ) + 1 = 7

Therefore I'm on 7th PC

And 7th pc setups are also really easy to do, so this is pretty good

Show 7th pc

Part 3

Welcome back to the PC tutorial/guide

This video is the 3rd part of the PC tutorial

This part will cover: 3rd PC and onwards in PC looping

Lets get right into it

8 line PC openers

8 line openers mean that it takes 8 lines to do, ending with a perfect clear

This also means it is loopable with the help of DPC

There are way too many openers that achieve this

And some openers here are better off having its own video, but ill show them off anyway

DPC

This is what you do after an 8 line PC, which involves clearing a TSD and ending with a PC,

This topic is covered in this video, which you should learn to complete the loop

https://www.youtube.com/watch?v=I_0I1Mbldh0&ab_channel=TitanPlayz100

The basics of dpc are that you have a spare piece after 8 line pc is cleared, as seen in this table at 3rd PC:

So according to what piece you have left over, you make a setup (built 100% of the time) and complete a TSD, then a PC after usually having a high chance and easy memorisation

Notice how this basically skips 4 PCs and goes back to the start

This Is because clearing 2l PCs will advance you 4 PCs

2 Line PCs

This brings us on the next part, 2 line pcs

In the first video, I showed you these setups to memorise

But I failed to explain how these relate to the pc loop

Well, if you complete a 2 line pc, done mostly on 2nd, 3rd and 4th pc, this will advance you 4 pcs

Lets look at the chart again

Say I did a 2 line pc on 3rd

I will go to 7th pc do animation

Btw this is tsz 7th which is REALLY easy 100% pc

But why is this

The simplest explanation is that when doing a 4 line pc, you go forward 1 pc in the loop, which also means going 8 forward

A 2l pc is half of a 4l pc, so you will go half the amount forward, which is 4

Another way of thinking is the remaining pieces

When you do a pc you have leftover pieces in a bag

Say you are on 3rd , you will use 7+2 from next bag and end up leaving 5 for 4th PC

But when doing 2 line PC, you use half the pieces, so instead of using 10 total you only use 5

So you use only 1 leftover and 4 from the bag, leaving 3 remaining pieces from same bag rather than leaving 7+2

On the chart you can see that 7th PC, which is 4 after 3rd PC, has 2 remaining

3rd PC and onwards

If you want to go for the 10 PC badge, or you are just PRO, you can learn the whole loop

referring to the chart again

starting at 3rd PC

You have 1 spare piece, and will use the next 9 pieces to solve it

First you have to determine what the remaining piece is, like dpc

Now you make a setup according to this … like dpc

Setups can be found on four.lol (some are pretty meh), or going to pc gang discord and in the setups channel

4th PC to 6th PC are the 'freestyle pcs', which mean you basically look at your queue and determine setups that have a good chance to pc

Here are some of those setups (ye pcs also have setups, not just tspins):

(I found these setups from hosef and smolfeesh so go support them!)

Now once you get to 7th you basically have a free PC, because these 3 piece setups are very simple and have mostly 100% chance to pc

Four.lol gives an extensive list of all of these, and there are more advanced setups on pc gang

From 4th to 6th there are also specific setups, but honestly freestyling is much better off

If you do want these setups I have linked some down in description, also found in pc gang's setup channel

PC number

 Pieces from last bag (leftover)

 Pieces in next bags
1

 7

 3
2

 4

 6
3

 1

 7+2
4

 5

 5
5

 2

 7+1
6

 6

 4
7

 3

 7

https://docs.google.com/document/d/19NgsSMKfbu57xu2DPPEr2APZHXxbnufIa2xI6tBT7Vo/edit#

(setup names^)

https://docs.google.com/document/d/1udtq235q2SdoFYwMZNu-GRYR-4dCYMkp0E8_Hw1XTyg/edit

(pc glossary^)

Outro

That's all for this video, but there is definitely more to discover about PC's

Please comment any tutorials you want in the future

Sorry for poor upload rate, there's just a lot of schoolwork rn

Consider Subscribing and checking out other people

Good luck opener mains!

PART 4

Welcome back to the PC tutorial/guide

This video is the third part of the PC tutorial

This part will cover:

Timing PC

Timing is quite important in performing multiple PCs in vs

Parity

Parity is a concept…

Outro

That's all for this video

Please comment any tutorials you want in the future

Consider Subscribing and checking out other people to master

PERFECT CLEARS

Good luck opener mains!