Deflection ( Distraction ) 引离战术
Deflection in chess is a tactic that forces an opposing piece to leave the square, rank or file it occupies, thus exposing the king or a valuable piece.
Deflection may be used as a gambit to cause an opponent's piece to move to a less suitable square.
迫使对方的子力离开它占领的重要的格子或线路使得对方王暴露或者有价值的子被攻击，这种战术叫作引离，通常使用方会以弃子手段让对方的子移动到位置不好的格子中去。
Example 1
1...Bd4 2. Qxd4 Qf1#
White queen is forced to move to d4 square, thus it can not defend f1 square.
Example 2
White plays 1.Rg7 deflecting the Black King. After 1...Kxg7 2.Qxe7 wins.
Example 3
1. Rb8 Qxb8 2.Qxh4 and mate follows e.g. 2...Rc8 3.Qh7 Kf8 4.Qh8#
The difference between deflection and removing defender
引离与消除保护这两种战术较易混淆，差别在于消除保护不必将对方一个子引到另一个格子中，比如：
1. .. Rxc4 2. Rxc4 Nb5#
This is often called removing defender, but to avoid overlap with the distraction motif (where the defender is removed by distracting it away rather than taking it), the more specific, "Capturing Defender" is used instead.
消除保护子，特指吃掉保护子，而不是引离保护子，两者略有区别。因此用capture defender更确切些。
