SZ Double Triple Attack, is a T-spin combo designed by player XaeL. This setup is essentially a T-Spin Double followed by a T-Spin Triple. A player utilizes the SZ ST stacking setup followed by an extra piece to create a T-spin triple. This opening is an effective alternative to fiddlesworth in newer games which nerf T-spin singles to the point that the fiddlesworth opening is sends much less garbage. This setup is especially useful when the beginning two pieces are S and Z.

After the setup

After the T-spin triple, a T-spin single remains. If the stack is reasonably high, you can build up further to unleash a large combo. Alternatively, you can do a STSD transfer.

Transfers

STSD

This transfer can only be done if there are two blocks above the overhang.

Alternatives

The following are alternatives when faced with SZ starts

T-Spin Single

T-spin Single Triple Single

SZ Cross