From Hard Drop Tetris Wiki
Double Triple Cannon, sometimes referred to as DT Cannon or DT, is a T-Spin combo designed by player TKI. The setup is essentially a T-Spin Double followed by a T-Spin Triple. A player utilizes the T-Spin Triple wallkick in SRS to make a T-Spin Double that leads into a T-Spin Triple. In Tetris variants without instant lockdown it is best to hold the soft drop button until the T-Spin Double has been completed. This makes it instantly drop "through the gap" so the T tetromino doesn't rotate early and end up in the wrong spot.
|
|
|
|
|
|
|
|
Empty Field Setups
Because so many DT Cannon setups exist, the player can choose a setup that fits the order of their opening bag of pieces. It is usually possible to hold a T through the second bag and into the third, allowing the player to make both T-spins in quick succession.
TKI's Signature
Basic DT |
Bonus TST |
IT Balance
IT Balance 1 |
IT Balance 2 |
IT Balance 3 |
Overhang Var. |
IT Balance With 13 pieces, |
TZ Base Setups
TZ with JL overhang |
TZ with SL overhang |
TZ with OZ overhang |
TZ with JL overhang |
JO Base Setups
For these setups, build the JO base first, the fill second, and the OJ structure on the left last.
JO Base 1 |
JO Base 2 |
IL Base Setups
IL Base 1 |
IL Base 2 |
JL Base Setups
JL Base 1 |
JL Base 2 |
DT-Cannon with no T Pieces
In this setup, the player tries to use no T pieces to set up their DT-Cannon. It is only possible to clear this setup within 14 pieces if the second T is at the end of the second bag, but, if successful, this is the fastest DT-Cannon setup. Otherwise, the second T will be used for the upstack, reducing this setup's efficiency to the same as the rest listed here.
|
Other Setups
O Base |
LS Base |
LS Base 2 |
JZ Base |
LZ Base |
Situational Setups
Lower Notch and Overhang
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Higher Notch
|
|
|
|
|
|
|
|
|
|
|
|
Line Clear Shaping
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
DT Cannon STSD
This setup looks identical to DT Cannon, with the only difference that one further cell is empty at the bottom (marked light grey in the first picture below). It results in a STSD after the first T-Spin Double is cleared. So, it's usually 3 T-Spin Doubles in total.
|
|
|
|
|
|
The DT Cannon STSD has the advantage that no overhang will be left after the last T-Spin. A regular DT cannon has the advantage that it is easier to build, faster to execute and that you can build a 4-wide on top of it. Also, receiving a garbage line with the hole in the wrong column will break the execution of the STSD. As opener, it may be actually better to stack it with an additional line below. The third to fifth picture below show a combined setup that results in 4 T-Spin Doubles.
|
|
|
|
|