The name refers to the goal of each turn to make pairs that add up to 14.
[1] The cards are dealt face up into twelve columns, from left to right.
As denoted by the game's name, the object is to discard pairs of cards that total fourteen.
Jacks value eleven, queens twelve, and kings thirteen, all others (including the ace) at face value.
[2] Columns may be stacked rather than cascaded, thus obscuring not-yet-active cards.