Page "Intelligent Qube" Paragraph 9

If normal cubes or advantage cubes fall off the end of the stage without being cleared, the number of falling cubes will be calculated on the block scale ( i. e. a counter is increased by 1 ).

Every time the number of falling cubes exceed that of the block scale, a row of the stage is lost ( thereby reducing the number of rows the cubes have to travel to fall off ).

This number is equal to the width of the stage minus one.

On the first stage, the stage is 4 cubes wide, so the limit is 3 ; on the final stage, the limit is 6 because the stage is 7 cubes wide.

If a normal or advantage cube falls off the end of the stage, that set is not considered perfect ( see below ).