TETRIS GLOSSARY
Hold
Also called Hold piece · Reserve · Hold queue
Store the current piece or swap it with the stored one. In common modern rules, you must lock a piece before holding again. Hold changes the order you place pieces without changing the underlying queue.
View in the A–Z glossary →BEFORE
TI
AFTER HOLD
IT
Left: active piece. Right: held piece. Swapping stores T and brings out I; normally another hold waits until a piece locks.