1-5th End Cannon

1-5th End Cannon(5分の1引いたら何もできない砲) is one of the TD Attack Openers. It is so named because it collapses when it receives holes at both ends of the field. However, the 2nd bag is relatively simple, which is a good thing. This opener was invented by Lovemantis.

1st bag

left roof

right roof

The I-piece must hold. The O, S, and L-pieces are the foundation for the left roof, and the O, Z, and J-pieces are the foundation for the right roof.

Setup rates are 24.44% on one side and 42.22% on both sides.

2nd bag

O>J

(basic 1)

J>O

(basic 2)

OI>J

(extra)

Always TST. Use at least the first two, and the third if you are get a TSDPC.

When O>J, the held I-piece should be stacked on the left; when J>O, the held I-piece should be stacked on the right.

3rd bag(PC)

• 2nd bag O>J(basic 1, PC rate is 90.40%, TSSPC rate is 67.18%, TSDPC rate is 36.83%.)

39.6%

31.3%

30.9%

30.9%

30.9%

21.1%

17.3%

16.0%

10.2%

9.5%

8.3%

8.3%

• 2nd bag J>O(basic 2, PC rate is 86.23%, TSSPC rate is 65.40%, TSDPC rate is 24.96%.)

34.2%

32.7%

32.5%

27.9%

19.0%

14.0%

12.4%

10.2%

10.1%

9.5%

8.3%

• 2nd bag OI>J(extra, PC rate is 75.87%, TSSPC rate is 61.51%, TSDPC rate is 61.51%.)

30.9%

30.9%

28.2%

16.0%

14.3%

14.3%

10.5%

Reference

• [Tetris Opener Organizing Wiki]