Yamaha Stacking

Yamaha Stacking is a multipurpose setup created by Agent RO. This opener began development in March 2021 and finished development in early June 2021. This opener can be used as either a Perfect Clear, Triple Double Attack or Single-TSD-PC setup.

Yamaha Stacking is the final setup Agent RO created.

First Bag
The first bag is stacked with the J, S and L pieces placed in any of the two ways shown. The O piece is in hold because it will be used depending on one of the three situations below.

4-line Perfect Clear
You have a 45.71% chance to get a Perfect Clear after 4 lines.

Triple Double
If you cannot make a Perfect Clear, you can create a Triple Double Attack using one of the following two ways (the first way shows a C-Spin).


 * L → J (99.09% PC rate, 22 minimal solutions)


 * J → L and I → S (55.99% PC rate, 9 solutions): This way cannot be built if you get an I piece after S, Z and J.

Single-TSD-PC
If getting a Perfect Clear or creating a Triple Double are not feasible, you can always stack this way. This involves doing a J-Spin Single in order to make a T-Spin Double. You have a 97.06% chance and 26 minimal solutions.