The N queens puzzle is the problem of putting N chess queens on an n×n chessboard such that none of them is able to capture any other using the standard chess queen s moves. The queens must be placed in such a way that no queens would be

program simulates the flight of aircraft in the longitudinal plane and displays the graph of the angle of attack

C#开发的一个小游戏（攻打菲律宾），集趣味性与技术性于一身，充分展现C#的图像图形处理技术-C# developers to a small game (attack on the Philippines), the set of interesting technical one, expess image and graphics processing technology of C#