File:Chess pin bishops.png - Wikimedia Commons

Chess Tactics: A Guide for Beginners Written By Experts

chess fork,pin and skewer

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File:Chess-tactics-image skewer-attack absolute.gif - Wikipedia

Skewer a skewer is an attack upon two pieces in a line and is similar to a pin #chess #國際象棋#chesslesson #國際象棋班#chessboard #chesspiece #tactics

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