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.

Castle Top

Flat Top

Fonzie

Snail

TKI 3 (Castle Top variation)

Continuations

• Three T-Spin Doubles example

• TKI 3 TSD Opening with TST Finish

• Imperial Cross: The fourth diagram is preferred becuase one will have a chance to make a Perfect Clear (89%).

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

T-Spin Double

Imperial Cross

Fractal

• Perfect Clear after 6 lines: Yet another way to place pieces in the second bag resulting in a chance for a Perfect Clear.

TKI 3 (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 picture).

Continuations

• T-Spin Double

• ST Stacking

• LST Stacking

• Donation

• Single Double (SD1)

• Super T-Spin Double

• Back-to-Back T-Spin Triple

• Double Triple Cannon: A DT Cannon followup. Theoretically may result in a PC.

• Blink SZ Prop: It may also lead to a Perfect Clear after 6 lines (diagram 5) if one can hold the J piece and I comes early in the third bag.

J is used

J in Hold

TSD

Perfect Clear

If Perfect Clear is not possible, one may make another T-Spin Double like below and then continue with another TSD or 4-wide.

• Imperial Cross: The second diagram is preferred becuase one will have a chance to make a Perfect Clear (89%). 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.

TSD

Perfect Clear

• Perfect Clear after 8 lines: Although there are other ways, this way is the easiest to memorize because it has three solutions.

TKI 3 (Fonzie variation)

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.

Below is an additonal way. Either I or L should come early in the third bag.

TKI 3 (Snail variation)

Try this variation when the O piece comes late in the first bag.

Continuations

• 4-wide

• T-Spin Double

• T-Spin Triple

• Imperial Cross

• Super T-Spin Double

• TSS-TST-TSD

• TSD-TST-TSS

• Infinite TST

See also

• Trustworthy DT
• Perfect DT