The Glitter Brooch is a T-Spin Double opener by Agent RO.
First Bag
There are 3 requirements in the first bag. From left to right, you need an L before Z, an I before S and a J before O.
Second Bag and later
Ideally, if you get an S before Z then J, you can use the below stack. You will make a 6-line Perfect Clear using the O piece from the third bag.
If you stack this way, while holding the J piece, you will have an additional solution.
If your second bag does not let you use the above continuations, you can make an 8-line Perfect Clear in one of these three ways.
- S → Z and J → O (94.17% PC rate, 29 solutions): This is the most ideal way to get a Perfect Clear in the third bag.
- S → Z / Z → O (50.75% PC rate, 10 solutions)
If you cannot make a Perfect Clear, you can make a T-Spin Double, in most cases, in one of these two ways. If possible, you may also make a 12-line Perfect Clear setup.
- O → Z (40.71% PC rate, 5 solutions)
If you cannot make a Perfect Clear, you can follow it up with LST stacking. If possible, you may make a 12-line Perfect Clear setup.
Alternative continuations
These are alternative ways to stack the second bag with their Perfect Clear probability rates, although their rates are averagely lower than the above ways.
- S → Z / Z → O (35.32% PC rate, 3 solutions)
- O → Z (41.27% PC rate, 3 solutions)
Late O Tetromino
If your O piece comes late, you can place it after the T-Spin Double as shown in the diagrams below.
The final shape is the same as TKI 3 Flat Top. You have many ways of stacking the second bag, here are some ways you can continue with:
- 6-line Perfect Clear: You need an O before L. After the T-Spin Double, use the held J and the third bag's I piece.
- 8-line Perfect Clear: This example has a 41.27% PC rate.
- LST Stacking: This continuation is entirely impromptu after the second bag.
See Also
