FD Spin is an opener with a series of Fin T-spin -> TSD setup by shenmirenwu3112. This opener requires I before L and J. One can 180 the L or J in.
The Fin T-spin can be done like this:
2nd Bag
The second bag can always be stacked like this:
The S piece needs some spinning to fit in its place
3rd Bag
The 3rd bag can be stacked in different ways:
Variation 1
If I is earlier than L, one can consider this setup:
After this one can also consider building this way. (100% setup chance)
Or if O comes before L, one can consider this setup
One can also continue like this:
Variation 2
This variation requires L comes before J
The I piece can be spun(requires 180 spin) into its place like this if it comes late:
DAS Left
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Rotate CW
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Softdrop
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Rotate CW
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Move right
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180 spin here
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Rotate CCW
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Done
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We can make a STMB cave here like this:
We can continue it with LST stacking route or PC route.
PC route(84.76% PC chance):
If L piece comes early, its 100% chance for PC. It has 12 minimals:
Full PC solutions here.
If J comes early, we can also stack this way:
It will be easier to continue LST stacking with this and also with higher PC chance:
PC route (90.87% PC chance):
It has only 2 minimals:
Variation 3
This setup is founded by Ivan28283. The setup chance is 100% with the L and O placements depending on which comes first.
L before O:
O before L:
One can do a J skim to make a T-spin shape out of the hole below:
Then do some T-spin setups(The setups below are just some examples):
TSD
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Imperial Cross
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Trinity
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Or a T-spin mini if one doesn't want to break the B2B chain:
See also