"Extended box" may refer to either of these two kinds of box variations:
- A double box (or triple box, etc.)
- A box pattern where throws are made going to one side until all the objects are on that side and the other hand is empty, such as (2x,0)(2x,4)*, (2x,0)(2x,8)(2x,4)*, or (2x,0)(2x,c)(2x,8)(2x,4)*. This type of pattern can be used as an exercise to prepare for a normal box with one more object.
Community content is available under CC-BY-SA unless otherwise noted.