Anchor Set (アンカーセット)
A rarely used technique that is utilized to maintain Back-to-Back. Given its name because of how the J kind of looks like an anchor.
Using Anchor Set
Anchor set is mainly used in conjunction with the residual overhang that remains after a T-Spin Triple done on a corner, e.g., after an opening DT Cannon.
After anchoring a J, you stack up a donation Tetris. You do need to be conscious of how you stack, or else the open column underneath would remain covered.
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Anchor Set vs. Soft Drop
Compare with how you would typically clean up the TST overhang by soft dropping and sliding in an L or a J. In contrast, notice how no soft drop was required in the above example involving Anchor Set.
Placing the J for Anchor Set, assuming that you intend to maintain Back-to-Back, effectively means that you will be committing to stacking 4 more lines to follow up with a Tetris. When you slide in an L, you only have to stack 3 more lines to follow up with a Tetris. This means that you'll remain vulnerable to attacks for a more extended period when you use Anchor Set in most cases.
New DT Cannon
Notably, this method is used as a placement (fourth picture below) in one of the possible follow-ups for New DT Cannon. It uses Anchor Set in combination with Kaidan.
See Also / References
- Tetrisch on Anchor Set