Now some examples of patterns that arise when the knight discovers check, giving it two moves with which to create havoc.
To the left probably is the simplest possible example. The kernel of the discovery should be obvious enough, as it consists of White’s only remaining pieces. If the knight moves from f6, the bishop checks Black’s king. This means the knight will have two unfettered moves in a row. So look for enemy pieces on the same color square as the knight; be ready to move it in any direction. The natural target is the queen if it can be reached, and so it can: 1. Ne4, Kg8; 2. NxQ.