TETRIS GLOSSARY
BT Cannon
Also called Beta Cannon
A T-spin Double into T-spin Triple setup. It resembles DT Cannon with the Double section shifted sideways, but has its own construction and continuations, including routes toward C-Spin and a Perfect Clear.
View in the A–Z glossary →Double → Triple. Colored cells show the first-stage reference, not placement order. Later bags, clears and alternative routes are not shown.