SIO loop

SIO loop(Japanese name...SIOループ) is an Opener with mechanical TSD as its main axis. Since all the foundations are eliminated, the shape becomes very beautiful. This Opener was invented by Sioyaki.

1st bag
The first bag has six stacking options. The third of these is named SIO loop because it is based on S,I,O pieces. The setup ratio is 99.40% with left-right flipping combined and 99.05% without left-right flipping.

The double rate is 97.14% with left-right flipping and 92.54% without left-right flipping.

2nd bag
The second bag can always be TSD with just this stacking method.

3rd bag
A third bag can always be TSD with just this stacking method.

4-lines PC
At the end of the first bag, the second bag offers a 20.00% PC chance. 2 ways to take it.

8-lines PC
At the end of the second bag, the third bag offers a 46.98% PC chance. 3 ways to take it.

reference

 * [Sioyaki's Opener Wiki]
 * [Opener Organization Wiki]