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In chess, opposition (or direct opposition) is the situation occurring when two kings face each other on a rank or file, with only one square in-between them. In such a situation, the player not having to move is said to "have the opposition" . It is a special type of zugzwang and most often occurs in endgames with only kings and pawns . The side with the move may have to move the king away, potentially allowing the opposing king access to important squares. Taking the opposition is a means to an end (normally forcing the opponent's king to move to a weaker position) and is not always the best thing to do. There are extensions of direct opposition, such as diagonal opposition and distant opposition, which can be conducive to reaching direct opposition. All three types may be referred to simply as ''opposition'' if the type is unambiguous in context. ==Direct opposition (or) Rook opposition== ''Direct opposition'' is a position in which the kings are on the same rank or file and they are separated by one square. When the term ''opposition'' is used, it normally refers to ''direct opposition''. In this diagram, the player whose turn it is ''not'' to move has the opposition. If it is Black's turn to move, White has the opposition and wins . (See King and pawn versus king endgame.) If it were White's turn to move, Black would have the opposition and the position would be a draw. In order to remember how to play situations like in the diagram to the right - each time the pawn is moved forward, it must be without giving check. If the pawn checks the opponent's king, the opposition is lost and the game is drawn. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Opposition (chess)」の詳細全文を読む スポンサード リンク
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