From Hard Drop Tetris Wiki
The Hummingbird (formerly the Subscriber Special) is a T-Spin Single opening setup for early S/Z bags. It only requires 5 tetrominoes to execute, and can easily be followed up with an STSD. The L piece is placed after clearing the second line.
Build Order
In order to build the Hummingbird with an SZ start, it is required to place exactly one J piece or L piece before the T-Spin Single. The I piece can be placed on the first J/L in its respective position regardless of whether it comes before or after the T-Spin.
|
|
|
If both J and L must be placed before the T-Spin can be executed, a similar setup can be used. Note that the O piece is on the left side of the T-Spin, therefore it is essential to know the queue before choosing this setup or the regular Hummingbird.
|
STSD Stacking
The following cover most circumstances when stacking to an STSD in the second bag.
|
|
|
|
|
TSD Conversion
The T-Spin Double can be converted to a T-Spin Triple, Imperial Cross, Trinity or 4-Wide.
|
|
T-Spin Triple |
Imperial Cross |
Trinity |
4-Wide |
Early J and L
|
|
|
|
|
After the T-Spin Single, the setup is generally continued with an Imperial Cross. The first two continuations have a decent Perfect Clear chance, but the third continuation should only be used for unfair bags, which never results in a Perfect Clear chance.
The first continuation has an 84.56% PC rate and 20 minimal solutions.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
The second continuation has a 50.00% PC rate and one solution. Both T-Spin Single and Tetris can happen.