Pinwheel

Under Construction

Pinwheel is a TSS → TSD → PC opener created by Winterfrost. In the first bag you only need S/Z before I, and O before L/J with the mirrored version.

= 1st Bag = This is the preferred way to stack the 1st bag.

Alternatively, if stacking like above is not possible one may be able to opt for a skim version. This is not recommended and it would be best to use a different opener if you can't stack it normally.

1st Route
This bag can always be stacked this way.

If you have a late Z piece, rotate clockwise, softdrop and rotate counter-clockwise twice to get it in place, as shown below.

8-Height Perfect Clear
This field has a 95.95% chance of achieving a perfect clear. There are only 9 minimal solutions, however due to the TS/Z you technically only need to memorize 6 different solutions.

STSD
If a perfect clear isn't possible or you receive garbage, you can make an STSD with a relatively high build chance.

If stacking like above is impossible, it would be best to either freestyle the STSD or just stack up normally.

Count-to-4
In the first diagram above, it is possible to do a Z-Spin if you get Z after T and S. After the Tetris, you have a 100% chance of building an STSD.

If you build the O before J variant, you will have a 34.48% chance of achieving a 14 line perfect clear.

The first solution can give you a T-Spin Single.

2nd Route
This route leads to a higher 8 height perfect clear chance than the first route, but it requires more memorization.

O before L (99.80% PC)
This setup has 7 minimals. You also need S to come before L or Z if you're playing a game without 180 rotations.

L before O (100% PC)
This setup has 11 minimals.

= Vertical TSS =

Double Triple Double
Discovered by mLurker. This bag can be stacked this way almost every time.