A Discovered Attack is a X-ray related chess tactic, revealed when one piece moves out of the way of a sliding piece ray, discovering an attack to squares, opponent pieces or the king, the latter case called a Discovered Check. Discovered attacks can be extremely powerful, as the piece moved can make a threat independently of the piece it reveals.
- Discovered attack from Wikipedia
- Chess Corner - Chess Tutorial - Discovered Attacks
- The Discovered Attack from Ward Farnsworth's Predator at the Chessboard