1-11th Compromise Cannon

The 1-11th Compromise Cannon (11分の1引いたら妥協しかできない砲) is one of the TD Attack Openers. If you pull an eleventh on the second bag you will have to compromise. However, the ideal shape is quite powerful and is the same shape as the Honey Cup. If you can rotate 180 degrees you can always stack the ideal shape. This opener was invented by Sioyaki.

1st bag
If the I-piece comes early, it can be stacked. Setup rates are 50.00% on one side and 60.00% on both sides. The explanation from here is the left roof.

2nd bag
Always TST. the left-most stacking method is the same shape as the Honey Cup. If this does not stack, try the third stacking method. The three stacking methods from the left provide 91.59% coverage. If all cannot be stacked, do the right-most stacking method. This stacking method can always be done.

If the left-most stacking method is also the highest priority, the second stacking method is not needed, but if you want to do TetrisPC after TSS, do not use the left-most stacking method but use the second one.

If priority is given to the left, the ideal shape has a 75.00% chance of being set up, the interim shape has a 16.59% chance, and the compromise shape has an 8.41% chance.

If the L-piece is faster than the S-piece, then a bonus shape can be set up. This shape has a higher PC rate than the ideal shape, but a lower TSDPC rate than the ideal shape. Also, if the Ideal Shape is the highest priority, the Bonus Shape need not be used.

Also, the left-most stacking method can always be done if there is a 180-degree rotation. (The same is true for the second stacking method.)

8-lines PC

 * ideal shape(PC rate is 96.87%, TSSPC rate is 68.89%, TSDPC rate is 68.89%, 14 filter solutions.)


 * interim shape(PC rate is 90.40%, TSSPC rate is 67.18%, TSDPC rate is 36.83%, 12 filter solutions.)


 * compromise shape(PC rate is 19.48%, TSSPC rate is 9.76%, TSDPC rate is 0.00%, 3 filter solutions.)


 * bonus shape(PC rate is 98.57%, TSSPC rate is 73.69%, TSDPC rate is 36.98%, 24 filter solutions.)

compromise shape→always TSS→6-3 Stacking
Always TSS. Stack the J-piece last. After this, it is derived to 6-3 Stacking.

Reference

 * [Flyspeck101 - 9% Cannon]
 * [Sioyaki's Opener Wiki]
 * [TD Attack 8-lines PC Wiki]