Fast DT (ファーストDT) is a Double Triple opener based on first bag TSD, created by Yuu. This opener is remarkable for having high chance (73.33%) of building TST after TSD in the first bag among other first bag DT openers.
First Bag
It has the same piece placement and dependencies with Castle Top TKI but with OL shifted to right.
Second Bags
Route 1
Route 2
Route 1
Thrid Bag
This shape is not always possible to build (Z>J & O>S|Z), but it has clear residue and can be continued with TST and potential 14 line Perfect Clear.
Fourth Bag - A
This can be used when L piece comes sooner than O.
It leads to a 98.77% PC chance field with 5 minimal solutions.
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66.67%
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36.67%
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28.89%, potential TSS
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18.89%
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8.89%, potential TSS
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You can also continue with this if J comes faster than O.
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TSD, J>O
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TST, always possible to build
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Fourth Bag - B
This can be built when O comes faster than J and L.
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O>J&L
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residue
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This is also possible, but it is usually better to build variation A when this is possible.
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There is 66.67% Perfect Clear chance, with the only solution being the first solution of variation A.
It can be continued with various TSD setups.
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Hold O or place O on L
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J>L
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L>J, O>Z
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A Switchback setup can also be built.
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always possible with 180°
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residue
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OSZ stairs
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OSZ stairs
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residue
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compromise of OSZ stairs fail
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You can build an interchangable LOJI box or freestyle LOJI.
The L in the fifth bag can be spinned in this way:
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softdrop L
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rotate CW
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rotate 180
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rotate CCW
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harddrop L
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Fourth Bag - C
This may be built when variation A and B are impossible to build, but it should be restrained since it often leads to a bad residue.
14 line Perfect clear is possible with 19.84% chance.
Various TSD setups can be built, but they often require skimming.
See Also
- Perfect DT - A similar opener that starts with DT cannon without wasting T pieces
External links
