Crown TSD

Crown TSD is a T-Spin Double setup. It has the same piece dependencies as Amino TSD Subvariant (early I and J, I and L in the mirrored setup). It is invented by Agent RO in November 2020, which is the first TSD opener he invented.

First Bag

Second Bag and later

General Continuations

• LST Stacking

• TST Tower: This can be used as a starter for Infinite TST. The left side can be stacked in any way, only the right side is fixed (S piece on the very right).

• Perfect Clear after 6 lines after T-Spin Single (16.67% PC rate, 5 solutions)

• Perfect Clear after 6 lines after T-Spin Double: If the O piece come before I and S comes before Z then J, you can use this continuation if the O piece comes within the first 2 pieces of the third bag.

Additionally, these continuations keep the unused piece on hold and use J and L in the third bag.

• Perfect Clear after 12 total lines: There are various ways to achieve this. This example uses an early L and O in the second bag.

Perfect Clear after 8 lines

Regular setups

• Setup A (46.67% setup rate, 99.01% PC rate, 18 minimal solutions): If you must place all the pieces before the T-Spin Double, this is the most ideal way to the second bag in a way that leads to a Perfect Clear chance in the third bag. With SRS, you can kick the Z and L pieces.

• Setup B (50% setup rate, 96.83% PC rate, 30 minimal solutions): The placements of the second bag's J, L, O and Z pieces vary.

• Setup C (63.33% setup rate, 91.90% PC rate, 19 minimal solutions): If you must place all the pieces, but you want a T-Spin Single that leads to a Perfect Clear chance with a T-Spin Double, this setup is the most ideal choice.

• Setup D (26.67% setup rate, 91.19% PC rate, 13 minimal solutions)

• Setup E (43.33% setup rate, 83.33% PC rate, 2 minimal solutions): You can always get a Perfect Clear if the S tetromino is the first piece.

Other setups

These Perfect Clear setups include the ones where a piece from the second bag is incorporated in the third bag Perfect Clear, and the ones where a piece is placed after the T-Spin Single or Double.

• Setup 1 (9.52% setup rate, 99.68% PC rate, 8 minimal solutions): If placing a piece after a T-Spin Single is allowed, this is the most ideal way. Furthermore, the shape is common in Triple Double openers with a vertical T, only the two halves switched places.

• Setup 2 (19.05% setup rate, 99.09% PC rate, 19 minimal solutions): The best way to get a Perfect Clear after two T-Spin Doubles while holding a piece from the second bag. It is stacked the same way as the 6-high Perfect Clear continuation in TKI 3 Opening's Early J piece variant, but this results in a chance of getting a Perfect Clear after 8 lines instead.

• Setup 3 (14.29% setup rate, 93.02% PC rate, 7 minimal solutions): Technically, you can get a Perfect Clear after 6 or 8 lines, but if you are aiming to get a Perfect Clear after the latter number of lines, place the Z piece on top of the T-Spin Single. Moreover, the final shape is also achievable in some Triple Double openers.

• Setup 4 (10.48% setup rate, 89.44% PC rate, 15 minimal solutions)

See also

• Glitter Brooch - another opener by Agent RO
• TKI 3 Opening - another opener with similar properties
• Ajanba TSD - annother opener with several 8-high PC continuations
• Perfect DT