PT Stacking

These are a series of openers.

PT Stacking

PT Stacking (Japanese name.... .PT積み) is one of the openers that performs TST on the second bag. 6-lines PC and 8-lines PC are easy to determine and acquire. This opener was invented by Sasa.

1st bag

There are two ways of stacking; the I-piece is the foundation. The setup rate is 56.43% on one side and 64.05% on both sides.

2nd bag

ideal(S-hold)

neutral

compromise

There are three routes: the first (ideal) offers the chance to obtain a 6-lines PC or an 8-lines PC.

3rd bag(PC)

• 2nd bag ideal shape(PC rate is 87.38%, TSSPC rate is 0.00%, TSDPC rate is 0.00%, 6 filter solutions.)

43.6%

40.6%

28.6%

24.8%

24.8%

20.0%

True PT Stacking

True PT Stacking (Japanese name... 真PT積み) is one of the openers that performs TST on the second bag. 8-lines PC can be obtained consistently at a very high rate. This opener was invented by Sasa.

1st bag

There are two ways to stack. Setup rates are 64.44% on one side and 91.11% on both sides.

2nd bag

• 6-lines PC route

O

S

I

T

If you can perform a TST with a Z piece, S piece, and I piece stacked this way in the second bag, you have a possible 6-lines PC; you can get it when the first piece in the third bag is an O, S, I, or T.

• 8-lines PC route

TST is always possible; O-piece, J-piece, and L-piece are interchangeable in placement.

3rd bag(PC)

20.1%

13.1%

12.9%

12.9%

11.7%

11.3%

11.1%

10.6%

10.2%

9.4%

8.9%

8.6%

8.1%

7.8%

7.6%

7.6%

7.6%

7.6%

7.6%

7.1%

6.8%

6.7%

6.3%

6.2%

6.0%

6.0%

5.4%

4.8%

4.4%

4.4%

4.1%

4.1%

4.1%

4.1%

3.8%

3.5%

3.2%

2.5%

1.9%

PC rate is 99.96%, TSSPC rate is 12.06%, TSDPC rate is 5.71%, 39 filter solutions.

reference

• [PT Stacking Sioyaki's Opener Wiki]
• [True PT Stacking Sioyaki's Opener Wiki]