Back-to-Back T-spin Triple is a difficult maneuver in some SRS based games, which in (for example) Tetris DS sends a total of thirteen garbage rows to the opponent. It requires the player to make two T-spin Triples Back-to-Back.
Setups notched on side Edit
LT/JT, the simplest set up. Its flaw is its heavy dependence on T tetrominoes, which could otherwise be held to complete the T-spin.
The core of JTTL can be replaced with two S or Z tetrominoes:
Setups notched in center Edit
Setups containing I: