TETRIS GLOSSARY
DT STSD
A DT-Cannon-like structure resolving into three T-spin Doubles: the first Double leaves an STSD. It does not follow the ordinary DT sequence of Double then Triple.
View in the A–Z glossary →Related terms
DT Cannon →
A construction that resolves as a T-spin Double followed by a T-spin Triple. The initial T may be used in the structure rather than scored. Different first-bag arrangements accommodate different piece orders.
STSD →
One connected structure that yields two T-spin Doubles. Often recognized through a three-by-three empty region with J/L construction. It is a distinct geometry from Fractal, not a name for any two consecutive TSDs.