Hard Drop Tetris Wiki:ISM's cannon

ISM's spin is an opener with a series with TSS - TSD - TST patterns by ILUSM You will need a L before S to execute the T-spin single in the first bag(J before Z when mirrored). This opener can frequently be done due to having little dependencies on piece orders.

T-spin single

Residue

First bag

Residue

In the first bag, it can be built if the L comes out before the S , or the J comes out before the Z .

Second Bag

Variant 1

if I comes before L

Variant 2

if L comes before I

Variant 3

if O comes before L Z S

In the second bag, it is nearly always possible to stack like. And no matter where the garbage comes from, it can always be built.