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Uratos Double Triple Cannon, or Uratos DT Cannon also known as Wrench Cannon (The opener base looks like a wrench), is a variation made by Uratos of the 璃畏怖5P opener (translation not available), which performs 2 T-Spin Singles followed by DT Cannon setup. The opener finishes with a stack easily freestylable for Back-to-back. However, this opener is not 100% guaranteed and is inflexible and relatively easy to mess up; thus, it is not recommended for anyone to use Uratos DT Cannon in a serious competetive scenario.
Uratos Double Triple
1st Bag: 璃畏怖5P base
This opener is bag specific, requiring O before S and I before L. It may be possible to skim out the first bag if the TSS isn't possible.
I-Spin
In cases where you need to I-Spin, if the I piece is on the left side, rotate clockwise, soft drop, then rotate clockwise once more.
If the I piece is on the right side instead, rotate counterclockwise, soft drop, then rotate counterclockwise once more.
2nd and 3rd Bag
2nd Bag
The S piece might have to be placed on the O piece if it comes before the T piece.
Highland
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Mountain Peak
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Highland
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Highland
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If in the 3rd bag, S and Z are late, use the setup in the second figure, although you should be wary of misdrops.
Use the setup in the third figure for S before Z. In this setup, it is preferable to T-Spin before placing the J, if O is already placed, and O if J is already placed.
Alternatively, you can build it as following:
3rd Bag
Finish the DT Cannon setup: SESY (Semi-symetrical) build
From Highland
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From Mountain Peak
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SESY residue
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Alternatively, you can build it like the following. However, it may result in a different residue.
- For Jagged Peaks and Wide Peaks:
Bin-Out
From Jagged Peaks
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Bin-In
From Wide Peaks
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Continuations
You can use these continuations after clearing the DT Cannon. For simplicity, the following will be based on the SESY residue.
Note that by clearing the DT Cannon, you are using the T pieces from the 3rd and 4th bag
Back to Back Chaining
This continuation is mostly free style. You can start by tucking the L under the overhang or do a Mini T-Spin Single to fill the stack. Then continue stacking up and maintaining Bach to Back.
Perfect Clear
So far, the easiest and most reliable setup for PC, found by Uratos, is the following:
The residue has a 97.38% chance of a perfect clear, with 9 minimal solutions.
Imperial Cross
After 2nd bag, you can instead build this setup and sacrifice the T-Spin Triple for Imperial Cross. However, this setup is probably riskier than other setups.
Or alternatively
After clearing the Imperial Cross, you can continue the Back to Back chain similarly to what was mentioned above. However, since this setup uses a lot of T pieces, you will most likely be left with a 2w or 3w well in the center of the stack; thus, you can choose to combo instead.
U3D Cannon
This setup is similar to the Imperial Cross continuation if not riskier and uses more T pieces. It is very impractical in competitive settings.
After 2nd bag:
Hold J
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Trinity
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Complete Trinity
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After clearing the Trinity, as it uses a lot of T pieces, you are usually left with a 2w well. With that you can combo or freestyle Back-to-back.
Alternatively, while building Trinity, you may choose to extend into T-Spin Snaking.
Other variations (if UDT is not possible)
Original 璃畏怖5P Opener
Further details of this opener (in Japanese): Fumen - 璃畏怖5P or テトリステンプレ整理Wiki - 璃畏怖5P
The 璃畏怖5P/Riif's 5st bag PC begins with a flat T piece T-spin single or a vertical one similar to the UDT. The former case yields 2 setups with a 87.26% and a 85.79% chance for PC after performing a Tetris. The latter case leaves more opportunity for freestyling.
UIC (Imperial Cross)
1st bag
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2nd bag - Hold T
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3rd bag - Cross
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Transitioning from 2nd bag to 3rd bag may need an L tuck to create an overhang.
Soft drop
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180 Spin
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L tuck
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