Discovered Attack

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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.

During move generation or move ordering, one may encourage discovering moves by considering origin squares attacked by an own sliding pieces, as well as the resulting attacking direction.

=See also=
 * Discovered Check
 * Double Attack
 * Double Check
 * Square Attacked By
 * X-ray
 * X-ray Attacks (Bitboards)

=External Links=
 * Discovered attack from Wikipedia
 * Chess Corner - Chess Tutorial - Discovered Attacks
 * The Discovered Attack from Ward Farnsworth's Predator at the Chessboard

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