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Chad is a chess variant for two players created by Christian Freeling in 1979. It is played on an uncheckered 12×12 gameboard with one king and eight rooks per side, where rooks are able to promote to queens. The inventor's aim was "to create a game of tactical and strategical depth that was both simple and elegant to express the concept of ''mate''—the 'pure' chess game". The game was played for many years at the Fanaat games club in the Netherlands and was featured in the periodical ''The Gamer'' 6 in May–June 1982. ==Game rules== Each player owns a ''castle'' consisting of 3×3 squares surrounded by a ''wall'' of 12 squares. A king may not leave its 3×3 castle, but the rooks are free to move unimpeded by castles or walls. * The king can move and capture like a chess king or a chess knight. * A rook moves like a rook in chess, and if ending on a square in the enemy castle, automatically promotes to a queen. * A queen moves like a queen in chess, and is unimpeded by castles or walls. * A rook or queen may capture an opponent's rook or queen ''only when'' one of these pieces is on the enemy's wall, and the other piece is in its own castle. Then either player having the turn to move may capture. (In other situations rooks and queens cannot capture, and simply block one another's movement. For example, a queen in an enemy castle is capturable only by the king.) * Check occurs to a king whenever the king is in the path of an enemy rook or queen. Castle walls do not block checks. As in chess, White moves first, a capturing piece replaces the piece captured, and checkmate wins the game. 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「Chad (chess variant)」の詳細全文を読む スポンサード リンク
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