Back to back T-spin triple is a difficult maneuver in 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
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.
Setups involving S and I:
The core of JTTL can be replaced with two S or Z tetrominoes:
OZJ is arguably the safest and most efficient BtB T-Spin Triple setup. The setup is special in that it takes the least amount of tetrominoes to set up the notch. The player is also given 7 columns of space to stack freely. Perhaps the most unique aspect of this setup lies in the fact that one of the T-Spin Triples can be turned into a T-Spin Double by placing an I into the empty column, a scapegoat for ill-fated garbage.
Setups notched in center
Setups containing I:
Switching sides
A player may switch sides to clear Back to Back T-spin Triples indefinitely.
Any T-spin line clear is good enough to keep the "Back to Back" alive, which allows for lopsided designs.
These two have interchangeable parts.
See also
- Twist - Explanation of twists such as T-Spins
- T-Spin methods - Various methods of creating T-Spins
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