X-ray or Skewer attack

X- ray attack is just opposite of Pin attack. In the X-ray attack , there is a movement of respective pieces. In this, a piece attacks a hostile piece that is situated on a line with the another piece but with lesser value. Furthermore, when the attacked piece moves off the line, it exposes the second piece to capture. This process is really very effective as shown in the diagram.

For e.g., when White’s rook maneuvers the Black forces into an X-ray position. There upon White’s Rook X-rays the Black’s king and thus wins the black rook.