Hummingbird (formerly Subscriber Special) is a quick and efficient T-Spin Single opening setup for early S/Z bags. It only requires 5 tetrominos to execute, and can easily be followed up with an STSD. L piece must be placed after completing the second line.
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 after the first J/L in its respective position regardless of whether it comes before or after the T-Spin.
In cases where both J and L must be placed before the T-Spin can be executed, a similar setup can be used. Note that in the following example, the O block is on the left side of the T-Spin, thus it is essential to know the queue before choosing this setup or the Hummingbird proper.
STSD Transition[]
The following setups cover most circumstances when transitioning to an STSD.
After the T-Spin Single, the setup is usually continued with an Imperial Cross. The first two setups have a decent chance of resulting in a Perfect Clear, but the third setup should only be used for unfair bags, which cannot result in a Perfect Clear.
First setup: 23 solutions
Second setup: 1 solution (Both TSS and Tetris can happen)
