Colinspin

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Colinspin is a T-Spin Single opener created by player Colinyz. This opener began development in September 2022. The opener is versatile, having multiple continuations after the first bag.

In all continuations, the first bag is stacked like so:

7-2 / 2-7 Freestyle
One of the continuations is to make a TSD in the second bag. This will lead to a 7-2 stack. If the left side is not filled, it will result in a TSS and potentially a 2-7 stack.

Here are some examples:

Perfect Clear After 6 Lines
Stacking the second bag like this will result in a TSD and give a 30.95% chance to perfect clear after 6 lines.