ST Stacking

From wiki

See also: ST Stacking Setups

ST stacking is a more-or-less sustainable (under Random Generator) method of stacking tetrominoes to form successive 4-line clears and T-spins. In Tetris DS standard mode, this stacking method achieves near maximum points per line. It's superficially similar to one of the T-spin triple setups but allegedly easier to learn.

First build this

Drop an S

Spin a T

T-spin double

Leaves one row of garbage

Build more layers

Another S and T