TKI 3 Opening

With an I tetromino early in the first bag, one can try a TKI opening, invented by Tetris DS player TKI. Given the right pieces, it allows for three T-Spin Doubles and a T-Spin Triple to finish. This is a good setup since it uses all pieces in a good balance, as well as not wasting their T.

Here is the basic TKI-3 Opener. Beneath are some variations on the setup. Throughout these, however, the basic setup remains the same. The first three diagrams show the initial opener and the last diagram shows Kazu's variant.

Continuations

 * TKI 3 TSD Opening




 * Imperial Cross: The fourth diagram is preferred because one will have a chance to make a Perfect Clear (89.68%).

If Perfect Clear is not possible, one may build another T-Spin Double, Imperial Cross or Fractal.


 * Perfect Clear after 6 lines


 * Perfect Clear after 6 lines + T-Spin Double: Yet another way to place pieces in the second bag resulting in a chance for a Perfect Clear.



Continuations

 * Perfect Clear after 6 lines: In the third bag, O or L must come early.

If Perfect Clear is not possible (e.g. O or L came late), one may stack an STSD.


 * Mechanical TSD

Flat Top variation
This way involves placing the J piece upside down on top of the Z piece (there is another way as shown in the first diagram).



Continuations

 * T-Spin Double

Using a Donation technique may be feasible if O is late.


 * ST Stacking


 * LST Stacking


 * Double Triple Cannon: A DT Cannon followup. Theoretically may result in a Perfect Clear (solutions shown).


 * Mechanical TSD


 * Super T-Spin Double


 * Imperial Cross: The second diagram is preferred because one will have a chance to make a Perfect Clear (89.68%). The solutions are the same as above.


 * Perfect Clear after 6 lines: If one can hold J and I from the third bag comes early, it is possible.

Using the Blink SZ Prop technique may result in the same situation.


 * Perfect Clear after 8 lines: Although there are other ways, this way is the easiest to memorize because it has three solutions (42.38%). If S comes first, then it is increased to 77.78%.


 * Perfect Clear after 12 lines: If one gets SZO in the third bag, it would not be possible.

Kazu's variation
Try this variation when the J piece also comes early in the first bag.

Continuations

 * T-Spin Double: Both examples can be followed by a Perfect Clear (93.10% for the second example).


 * LST Stacking


 * Perfect Clear after 6 lines: The last two diagrams will work if O or T come early in the third bag.


 * Perfect Clear after 6 lines + T-Spin Double


 * Perfect Clear after 8 lines: The chance is 68.77%. See TKI 3 Perfect Clear for all 8 solutions.

One can continue with a T-Spin Double if they cannot make a Perfect Clear.


 * Perfect Clear after 12 lines: It may work as long as O is early in the third bag.