TETRIS GLOSSARY
Residual
Also called Residue · 3-residue · 6-residue
Blocks left in the combo channel after a clear. A common 4-Wide pattern keeps three residual blocks: placing four new blocks and clearing a four-cell channel row preserves that count. Their arrangement still matters.
View in the A–Z glossary →Three outlined cells remain inside this four-wide channel. Their arrangement matters for the next clear.