TKI 3 Opening

With an I tetromino early in the first bag, you 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 your 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 primitive openers, and the last diagram shows a variant.

Continuations

 * TKI 3 TSD Opening




 * Imperial Cross: The fourth diagram is preferable because you will have a Perfect Clear chance (89.68% PC rate).

If you decide to skip the Perfect Clear, you may stack a T-Spin Double, Imperial Cross or Fractal.


 * Perfect Clear after 6 lines


 * Perfect Clear after 6 lines + T-Spin Double: Another way to place the pieces in the second bag that results in a Perfect Clear chance.



Continuations

 * Mechanical TSD


 * Perfect Clear after 6 lines: You can stack this continuation in four ways and you will have a Perfect Clear chance.

An STSD can be stacked if making a Perfect Clear is impossible.

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

You may use a Donation technique if the O is late.


 * ST Stacking


 * LST Stacking


 * Double Triple Cannon: A DT Cannon followup. It may result in a Perfect Clear (26.90%).


 * Mechanical TSD


 * Super T-Spin Double


 * Imperial Cross: The second diagram is preferable because you will have a Perfect Clear chance (89.68% PC rate).


 * Perfect Clear after 6 lines: It requires an O before L. Use the J and I from the third bag for the Perfect Clear.

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


 * Perfect Clear after 8 lines: This way is easy to memorize because of the small number of solutions. The PC rate is 41.27%.


 * Perfect Clear after 12 lines: If you get SZO in the third bag, it is impossible.

Dingle variation
This is the latest variant, discovered by Agent RO in April 2021. This one places the J piece after the T-Spin Double, on the valley where the T-Spin Double was.

Continuations

 * 6-line Perfect Clear + T-Spin Double: It requires O preceding I only.


 * Perfect Clear after 8 lines: Some ways require placing the remaining piece on top of the T-Spin Double. One example (75.08% PC rate):


 * Perfect Clear after 12 lines

Sub-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 (31.98% and 93.10% respectively).


 * 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: Requires L before Z.


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

You can continue with a T-Spin Double if you cannot make a Perfect Clear.


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