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Perpetual Motion is a Patience game which has the objective of discarding playing cards from the tableau. It is also called Idiot's Delight because of the time-consuming process of the game. ==Rules== The tableau is made up of four piles/columns. Four cards are dealt (the rest are left aside as the stock), one in each pile. If there are cards of equal rank (such as three kings), the duplicates are moved to the leftmost pile with an equal card. Example: The three kings mentioned are found at piles 2, 3, and 4. The kings in piles 3 and 4 are moved to pile 2. After that, four cards are again dealt from the stock (even if one pile is empty) and plays already mentioned are made. Only the top card of each pile is in play. In case the four cards dealt from the stock are all of the same rank, they are immediately discarded. This continues until the stock runs out. After this first round, the piles are picked up, starting from the rightmost pile, and put over one another either faced down or face up without disturbing the order of the cards in each pile. Four cards are again dealt and the steps mentioned earlier are again done. The game is won when all cards are discarded (in fours). This is not always possible, however, since in about 45% of cases〔Clarke, M. C. (On the Chances of Completing the Game of "Perpetual Motion" ) accessed 13 July 2009〕 a cycle occurs: that is, the cards return to exactly the same sequence as one that has been seen previously. When the game can be won, it still takes an average of 128 rounds before completion, hence the name. 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「Perpetual Motion (solitaire)」の詳細全文を読む スポンサード リンク
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