From Hard Drop - Tetris Wiki
The TKI 3 Opener can be used for Perfect Clear setups. This page will show suggested second bag placements for a chance of Perfect Clear. It also takes 6-line Perfect Clear setups to account.
TKI 3 (Flat Top variation)
S Tetromino on left
If J is early and L is late, the placements below would be good. If Perfect Clear is not possible, it could proceed to LST Stacking.
A 6-line Perfect Clear is also available.
This is the easiest to memorize because it has the fewest solutions to remember, but the probabiliy is low. If one cannot make a Perfect Clear, then a T-Spin is possible.
Z Tetromino on right
- 93.57% (26 Solutions, truncated to the first 13)
This has the highest probability. This is used if J and O come first. If S comes first, then the probability is increased to about 100%.
Here are some placements of 3 pieces that guarantee the Perfect Clear if S comes first, no matter in which order the other pieces show up.
- 90.36% (12 Solutions, truncated to the first 6)
If S comes first, then the probability is increased to about 100%.
Here are some placements of 3 pieces that guarantee the Perfect Clear.
Although the probability is low, it can be used by taking advantage of the fact that the number of solutions is small. For this reason, if possible, use something else instead of this.
