From Hard Drop  Tetris Wiki
Maospin is a setup which starts with a single line clear TSpin Fin in the first bag, followed by a TSpin Double in the second bag, STSD in the third bag, and a 100% Perfect Clear finish in the fifth bag. Unlike most TSpin Fin setups this setup only clears one line in the first bag due to the setup not wasting the first T piece. This setup was made by and named after Maosense.
Contents 
First Bag
The build chance of the first bag is 100% as long as I and O come early.


Second Bag
One can always stack the second bag like this.
Third Bag
 Normal Build
If J comes early, building the stack below is always possible.


 Alternative Build
One can always stack the third bag like this. This will still lead to a 100% Perfect Clear field but with 5 minimal solutions. This build's solutions require a little more trickier memorization.


Fourth Bag
 Normal Build
One can always stack the fourth bag like this.


 Alternative Build
One can always stack the fourth alternative bag like this.


Perfect Clears
Both of the PC fields yield a 100% success rate.
 Normal Build
6 minimal solutions. The first solution covers roughly 85% of all bags which is why the normal build is the optimal build.







 Alternative Build
5 minimal solutions. The first solution covers about 59% of all bags.





