Periscope

Periscope is an opener with a series of TSS -> TSD setup by shenmirenwu3112. This opener requires L or J before S and Z. The way(direction) to do this opener depends on L and J. The example below is L before J. This opener is relatively clean and easy to continue as you can choose to 6-3 stack after the second bag.

General build

Variant 1

You can do this setup with the second bag if L or Z comes before O:

TSD+PC route(66.83%)

Then the TSD:

You can go for PC as shown below:

Or you can also continue with a 6-3 stacking after the second bag:

Skim + TSD + PC route(94.68% PC chance)

This setup requires I and J before O . It also requires a 1 line skim with L piece in the second bag but results in much higher chance of PC. This setup is found by Ivan28283.

Then the PC solves:

All solutions here

Variant 2

The placement of the T piece is slightly different from the Variant 1.

You can do a lot of variations after the second bag of Variant 2. Here are some routes that you can go for:

PC route

You will need O to come before L. Here are some ways to build for PC.

No save route 1 (80.52% PC chance)

You will need Z before I and J for this setup.

Then the PC solves:

All solutions here

No save route 2 (89.05% PC chance)

You will need Z before I and J for this setup. This setup is found by Ivan28283.

The PC solves:

All solutions here

Save J route (84.27% PC chance)

Here is an example:

The PC solves:

All solutions here

Save Z route(66.73% PC chance)

Here is an example:

The PC solves:

All solutions here

STSD route

This is an example to build a STSD

6-3 stacking

Shachiku Train route

After the second bag, we can also build a Shachiku Train like below. This setup is 100% buildable.

and continue with another one.

C-spin route

This setup requires to use one T piece from the third bag:

180 TSS route

With games like Tetr.io, you can do a 180 degrees T-spin single like below:

then a washing machine lol:

See also

• Submarine