Sure FD (シュアFD) is one of the openers starting with T-Spin Fin Single. the first bag can always be stacked and the terrain to be left is clean. This opener was invented by Sioyaki. It is a [[1]] opener.

1st bag

turning to the left

turning to the left

harddrop

TSS is always possible. This stacking is possible if the L-piece is faster than the J-piece. If the J piece is faster than the L piece, flip it left or right.

2nd bag

Always TSD is possible. softdrops other than T-pieces are fixed once, but that's all through this bag.

derivation

8-lines PC

34.0%

27.1%

15.6%

14.3%

9.5%

PC rate is 67.30%, TSSPC rate is 10.16%, TSDPC rate is 0.00%, 5 filter solutions.

LST Stacking

An example.

14-lines PC

In fact, this opener alone can theoretically create an infinite PC loop.

3rd bag

It can always be stacked. The firepower is a little bit. S-pieces, J-pieces, and T-pieces are interchangeable in placement.

4th bag

It can always be stacked. No firepower. O-pieces, Z-pieces, and S-pieces are interchangeable in placement. J-pieces are stacked last.

5th bag(PC)

75.0%

66.4%

46.1%

43.3%

43.3%

PC rate is 100.00%, TSSPC rate is 60.95%, TSDPC rate is 0.00%, 5 filter solutions.