Seagull Special

The Seagull Special is a T-Spin Opener setup designed for any piece order starting with SZ. It creates a T-Spin Single in the first bag and can be easily followed up with a Donation T-Spin Double, while leaving behind a board suitable for Tetris stacking. The Seagull was created by the Hard Drop user ZHL.

It is a useful bag for beginners who don't want to learn the multitude of SZ openers for differing situations, and for experts looking for a reliable anti-Perfect Clear strategy. If desired, it is possible to follow up with a third, or even fourth T-spin, but these are much more situational to create than the first two. For most players, it's better to follow up the donation with Tetris stacking to move as quickly as possible.

Build Order
As stated previously, the Seagull can be built where there is any SZ start. However, it is also possible to build the Seagull without the use of mirrors. The only pieces which are reliant on eachother are L and J; if J comes before L, and if hold can't be used, then place the J piece as shown, and soft drop the L into position.

For players looking to build quickly, however, building the mirror can allow the seagull to be built solely with hard drops.

Donation Follow-up
The Donation followup has a 100% rate of accuracy, and only requires the knowledge of two setups to cover all cases.

Sometimes, the Z piece will come after the S piece. Placing the Z piece into the hole is easy and doesn't even require a true Z-Spin, simply rotate clockwise and place the piece as shown in the first figure below, then rotate clockwise twice more.

Perfect Clear Follow-up
Theoretically, the Seagull Special can be followed up by a perfect clear using the second and third bags. The precise possibilities have not been documented; however, a variety of board shapes (and their following possibility of perfect clear) have been determined:

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