Eight queens chess problem is a famous theme in all kinds program design langue.

八皇后问题是各类语言程序设计中的较著名的题目。

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Eight queens problem is an old and well-known problem is a typical example backtracking algorithm.

八皇后问题是一个古老而著名的问题，是回溯算法的典型例题。

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Eight queens problem is an ancient and well-known problem is a typical example backtracking algorithm.

八皇后问题，是一个古老而著名的问题，是回溯算法的典型例题。

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This so-called East Side Access will bring about 160, 000 passengers a day from Long Island to a new station in Queens' Sunnyside neighborhood, then about five more miles to the new, eight-track Grand Central hub.

NPR: New York Expanding Nation's Biggest Transit Hub