ZOS Tower
From Hard Drop Tetris Wiki
ZOS Tower (Japanese name: 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
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It performs TSS, so named because it can be loaded 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
ideal shape |
ideal shape |
compromise shape |
always Dulse Flame |
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.