ZOS Tower

ZOS Tower (ZOSタワー) is an opener to set up STSD after TSS. Overall, it requires less softdrop times and can be stacked quickly. This opener was invented by Sioyaki.

1st bag
It performs TSS, so named because it can be stacked when Z>O>S and can tower with ZOS. Setup rate is 33.33% on one side and 58.33% on both sides.

2nd bag
Perform TSD. 91.67% of the time, the ideal shape can be stacked to produce a TSD. If not possible, TSD can be done with compromise shape. If terrain is important, Dulse Flame is always possible without using T-pieces for Spin.

8-lines PC
PC rate is 49.48%, TSSPC rate is 38.02%, TSDPC rate is 21.11%, 5 filter solutions.

reference

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