Sometimes one piece can attack two or more opposing pieces at the same time. When this occurs, it is known as a fork. Knights are especially renowned for their forking ability, but every piece has the potential to fork multiple enemies.
The diagram above illustrates a typical knight fork. White has just played 1. Nd6+, and his knight now attacks both the Black king and queen. Black must move his king to a safe square, such as Kf8. White can then play 2. Nxb7, winning the queen.
