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Marseillais chess (also called Double-Move chess) is a chess variant in which each player moves twice per turn. The rules of the game were first published in Marseillais local newspaper ''Le Soleil'' in 1925. This chess variant became quite popular in the late 1930s with such chess grandmasters as Alexander Alekhine, Richard Réti, Eugene Znosko-Borovsky, and André Chéron playing it.〔(Marseillais chess ) by Hans Bodlaender and Antoine Fourrière〕 == Rules == A player can either move one piece twice or move two different pieces on his turn. Castling is considered as a single move. When a player gives a check on the first move, he loses the second move of his turn. If a player is in check, he must move out of check on the first move of the turn. It is not allowed to move the king into the check on the first move of the turn and then move out of the check on the second one. ''En passant'' capture is allowed even if the opponent moved the corresponding pawn on the first move of the previous turn. However, ''en passant'' capture must be made on the first move of the turn. When two pawns can be captured ''en passant'' after opponents move, both of them can be captured. To avoid too much advantage for White, usually a ''balanced'' version of the game is played. In the balanced version, White makes only one move on the first turn. The moves are made in the following order: ''White, Black, Black, White, White, Black, Black'', etc. This rule was introduced in 1963 by Robert Bruce and since then gained a wide acceptance. 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「Marseillais chess」の詳細全文を読む スポンサード リンク
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