Chess Tactics: X Ray

The x ray is a very useful tactic that chess players can use to indirectly attack their opponents pieces and add pressure to their opponents setup without directly attacking any pieces in some situations. X rays can be used with all your pieces and should be looked at any time during the middle game.

http://www.thechesswebsite.com

Chess Software used in the video can be found at http://www.chesscentral.com and http://www.chessok.com