C-Spin
From Hard Drop Tetris Wiki
The C-Spin (TKI積み) is a kind of Triple Double Attack. It is invented by TKI. This name is given because of the "C" shape that is formed. As the name suggests, it results in a T-Spin Triple which is usually followed by a T-Spin Double within three bags. As an opener, it is most often built with an ZST core whereas L and J are used to build the overhang. There are other cores made with different pieces.
The C-Spin
First Bag
ZST Core |
TOJ Core |
ITZ Core |
ZOT Core |
ZTI Core |
Second and later bags
Depending on the setup used, some setups have a fixed second bag.
- ZST Core: There is no fixed way of stacking the second bag, so a player must stack ad-lib. Below is an example, with a Trinity in the third bag.
- TOJ Core: Only J should come before I. The O, S and Z pieces can always be placed in one of four ways.
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- ITZ Core: The S and I should come early and the J, O and L is placed in one of two ways.
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- ZOT Core: Again, there is no fixed way of stacking the second bag, so a player must stack ad-lib. For this example, the L, Z, S and J can be placed in one of two ways. If one is able to keep the O in hold, then they can make a T-Spin Triple in the third bag.
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- ITZ Core: It is better to use the I piece on the right first and use the second bag's I to make the notch.
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