User:Wongsz

Guideline
Easy to Freestyle, shown stack has small chance to Perfect Clear

All-Spin
After stacking in one of two ways you will have an S or O on hold.

Imperial cross
These patterns use the second bag S/O to reliably create an Imperial Cross.


 * O save

Use these when all else fails


 * S save

Note if O comes early 3rd bag in either variation one can stack like so:

Alternatively one can opt for a t-spin single in trinity to form either a t-spin or z-spin next. (See the Trinity hard drop page TSD Declined or Approved?)
 * The STSD pattern can be resolved with many piece combinations:


 * Listed are some congruent shapes that result in the same Triple Double Attack.

Zipper
Congruent shapes which use both S/Z delay the attack to the third bag.

This can be resolved like so, or upgraded into another Triple Double Attack.

Perfect Clear

 * S Variation Solutions


 * O Variation Solutions