：-0 Stacking

A high probability 8-lines PC is possible. This opener was invented by Yuu.

The "：" in the page name should be one-byte characters(":"), but for the convenience of page creation, we have used double-byte characters.

1st bag
Stack them like this. If the L piece is earlier than the J piece, the left stack is used; if the opposite, the right stack is used. The setup rate is 66.67% on one side and 100.00% on both sides.

The description from here is right roof(L>J).

2nd bag
TST is always possible; if the O piece is earlier than the J piece, use the left stacking method; if the opposite, use the right stacking method. there is no softdrop except for the T piece.

3rd bag(8-lines PC)

 * 2nd bag O>J(PC rate is 98.73%, TSSPC rate is 58.25%, TSDPC rate is 34.09%, 25 filter solutions.)


 * 2nd bag J>O(PC rate is 97.42%, TSSPC rate is 51.71%, TSDPC rate is 33.17%, 24 filter solutions.)

14-lines PC
In fact, this opener alone can theoretically create an infinite PC loop.

3rd bag
TSS is always possible.

4th bag
Tetris is always possible.

5th bag(PC)
PC rate is 100.00%, 5 filter solutions.

3rd bag
TSD is always possible.

4th bag
TSD is always possible; J and L pieces are interchangeable in placement.

5th bag(PC)
PC rate is 100.00%, 10 filter solutions.

reference

 * [Tetris Opener Wiki]
 * [Tetris Opener Collection at Tetfu]
 * [Tetris Blog PerfectClear]