Definition:
Flank is a generic term that includes both the Kingside and the Queenside on the chess board. Wing is used frequently to mean the same thing.
Using chess notation, the a-, b-, and c-files make up one flank, while the f-, g-, and h-files make up the other flank. The term is especially useful when discussing operations that can occur on either side : a flank attack, a flank opening, or the development of a flank.
Also Known As: Wing
