TETRIS GLOSSARY
Hachispin
Also called Hachi Spin
A T-spin Single-to-Triple opener with possible Perfect Clear continuations. An early O commonly enables its base. The planned Triple must be resolved before the underlying board becomes easy to access.
View in the A–Z glossary →Single → Triple → Perfect Clear. Colored cells show the first-stage reference, not placement order. Later bags, clears and alternative routes are not shown.