A TSD → PC opener. This opener theoretically has a 99.999% chance of following up with a perfect clear after the first TSD. The two failing sequences are OITZSJLST and IOTZSJLST.
After the TSD, you'll want to spin in a J like the first picture, and place a Z or L like the second and third pictures if you get them early.
The two fields will have a 100% chance of perfect clear with 6 solutions:
However, if Z and L don't appear early, look at 5th preview (we're assuming that you have used hold and have 5 previews).
If you see either O, L, S, J, T in 5th preview, you can use the solutions above to do a PC.
If you see Z, you may use this solution:
- If you see I, you don't have an good option. Some possible ones are shown below, but they require an early T to work.
All solutions can be seen here
A perfect clear can be harder to achieve if you get a late J. In that case, you may want to continue with a TSD instead. Some examples:
Click here to see more possible TSD continuations.
- テトリス開幕テンプレWiki on IKcco 積み
setup-finder was used to find possible TSD continuations