Imperial Cross is essentially a T-Spin Triple with an extra gap, turning it into a cross. Two T-Spin Doubles are reaped from this setup. A T-Spin Triple wallkick, followed by a double rotation, is used to place the first T piece in the correct position.
Drop + No Line Clear
Overhang
Notch (Overhang Base)
Notch (T-Spin Triple Wallkick)
Drop + Line Clear
Notch (Overhang Base)
Opening
In games that only reward no-kick T-Spin Single and Double like Tetris Evolution and Tetris Splash, Imperial Cross becomes a useful opening.
TSZ
Others
TSD -> Imperial Cross
Stacking SL and ZJ results in a T-Spin Double that reveals an Imperial Cross.
Start
|
Fill side/First TSD
|
Create Overhang, voila Imperial Cross
|
One could also perform the same T-Spin Double to Imperial Cross using this method:
Alternatives
The second T-Spin Double can be replaced with a T-Spin Triple.
The replacement of the second T-Spin Double can lead into a Triple Double Attack.