N Queens
![N Queens](https://media.9game.cn/gamebase/20230731/11/11/74629d9f834e45268a8aebd524fa29d8.jpg?x-oss-process=image/resize,w_120,m_lfit)
Place N queens on a NxN chess board so that none of them attack the other.A generalised form of the 8 queens problem of placing 8 queens on a chess board.Play from levels 1 to 10 placing 4 to 13 queens! Can you do it in the minimum possible moves? Give it a shot!