Intai Cannon (いんたい砲)
Intai Cannon is a TSD → PC opener.
It's possible to use this opener for all first bags. Perfect clear opportunities are reasonably easy to find, and they are theoretically possible every time after the TSD.
You can open with this for all possible first bags, which is pretty unique.
As a side note, this field theoretically has a 100% PC chance with 10 solutions, but it's only theoretical because you only know what you have for the next 7 pieces.
You theoretically have a 100% PC chance after the TSD as well with 6 solutions, but since you can only see what you have for the next 7 pieces, you won't know what you have for the 8th piece. So instead, you can try to stack one of these two following patterns.
Note how the position of I is fixed for all solutions.
- @intai2110 on いんたい砲
How you stack your first bag is also used when you have an extra T for Double PC.