Cheese Mouse is an STSD opener created by SpikyLlama. This opener is useful for its wide number of continuations. However, it suffers from potentially slow starting due to wasting the T-piece for one to two bags.

First Bag

Requirements for the first bag are early I and Z.

Possible first bags are as follows. The first is ideal because you get B2B from the T-Spin Mini Single.

Second Bag

The second bag is used to finish the overhang and fill in the right. If you have an *extremely* late T, you may get one T-Spin Double in.

One potential way to stack your second bag is like this:

There's many ways to stack your second bag. It'll probably require some freestyling.

Third/Fourth Bag

This is where it gets interesting.

If you have an early J piece in your second or third bag and you used an S overhang, you can build a Trinity (or STSD if you have finished your second T-Spin Double) like so:

If you have an early J/L in your third bag and you did not use S for an overhang, you can build a T-Spin Triple like so:

Or you can take a late T-Spin Double: