TKI 3 Opening

The TKI 3 opening is a setup invented by Tetris DS player TKI.

With an I tetromino early in the first bag, the player can try using the basic TKI-3 Opener. 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 a T.

Basically, the I piece comes before Z. The J piece can be placed on O vertically, on S and O horizontally or upside down on Z (there is an alternative way). Furthermore, if the J piece comes early, there is a variant the player can use. Throughout these, however, the basic setup remains the same.

Castle Top variation



 * TKI 3 TSD Opening


 * Imperial Cross: If you can stack like the fourth diagram, you may get a Perfect Clear opportunity (89.68% PC rate).


 * Perfect Clear after 6 lines (D Parfait)


 * Perfect Clear after 6 lines (DD Parfait)

Fonzie variation



 * Mechanical TSD


 * Perfect Clear after 6 lines (DD Parfait): The second bag can be stacked in the following ways resulting in a T-Spin Single or Double and giving a chance for a Perfect Clear after 6 lines cleared in total.

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).




 * LST Stacking: You have to improvise from the second bag onwards.


 * ST Stacking


 * Double Triple Cannon


 * Super T-Spin Double


 * Mechanical TSD: In this case, the player can choose to make another T-Spin Double or a Perfect Clear (71.67%).


 * Imperial Cross: If you can stack like the second diagram, you may get a Perfect Clear opportunity (89.68% PC rate).


 * Perfect Clear after 6 lines (DD Parfait): The second bag can be stacked in the following ways resulting in a T-Spin Double and giving a chance for a Perfect Clear after 6 lines cleared in total. Usually, the Perfect Clear is completed with an I or S piece coming first or second in the third bag.


 * Perfect Clear after 8 lines (Yack's PC): You can often stack the second bag this way. In the first shape, note that you can spin the L after placing the J.

After this, you have a 68.77% chance to PC. This is the most common solve, but I suggest you to check all the solutions on this fumen|. Note that if you place the Z piece first, it climbs up to 88.33%.


 * Perfect Clear after 8 lines: The second bag can be stacked in a way that clears a T-Spin Double and prepares a Perfect Clear after 8 cleared lines in total. For this example, the Perfect Clear rate is 41.27%. This example is one of the easiest ways to memorize.


 * Perfect Clear after 12 lines: This example uses early J and L pieces in the second bag.


 * Kaidan Continuation: Small PC chance, can be followed by S4W. Documented on Hard Drop by "thewaxmango".

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.


 * Perfect Clear after 6 lines (DD Parfait): The second bag is usually stacked like this, depending on the placement of the JSL block. The O piece is required to precede I.


 * Perfect Clear after 8 lines: Some ways require placing the remaining piece on top of the T-Spin Double. For this example, the Perfect Clear rate is 75.08%.


 * Perfect Clear after 12 lines

Early J setup
If the J piece comes early, along with the I piece, the player can use this setup.

Continuations

 * LST Stacking


 * Perfect Clear after 6 lines (D Parfait): The last two diagrams will work if O or T come first or second in the third bag.


 * Perfect Clear after 6 lines (DD Parfait)


 * Perfect Clear after 8 lines: For this example, the Perfect Clear rate is 93.10%.


 * Perfect Clear after 12 lines

Perfect Clear

 * Main article: TKI 3 Perfect Clear