Discovered Check

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A Discovered Check 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 the opponent king. Discovered checks can be extremely powerful, as the piece moved can make a threat independently of the check giving piece it reveals, including the double check. Pieces potentially able to discover a check can be determined almost with the same method along with a union set of pinned pieces, which might be separated by piece color later.

=See also=
 * Check
 * Check Extensions
 * Checks and Pinned Pieces (Bitboards)
 * DiscoCheck
 * Discovered Attack
 * Double Check
 * Pin
 * Square Attacked By
 * Tactics
 * X-ray
 * X-ray Attacks (Bitboards)

=Forum Posts=
 * discovered check definition by Uri Blass, CCC, September 12, 2007

=External Links=
 * Discovered check from Wikipedia

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