Number One is a T-Spin Opener invented by Riviclia. Here, the T piece is spun vertically like in STSD.
Basic Setup
After the T-Spin Double
After the T-Spin Double, there is a floating block at row 2, column 9. With SRS spins, it is possible to fill in the surrounding empty space and make another TSD. Some examples:
Advanced techniques such as T-Spin Triple and Fractal are also possible.
Perfect Clear continuation
TST TSD Perfect Clear continuation
This way of stacking for a Perfect Clear is stacked like a T-Spin Triple, but with a gap. There are two paths, the first path involves the J piece horizontally and the other path involves the J piece vertically.
Path 1
Path 2
Imperial Cross Perfect Clear continuation
It is also possible to stack an Imperial Cross for a Perfect Clear. Again, there are two paths, the first path involves the L piece being spun and the other path involves the Z piece being spun.
Path 1
Path 2
