(This is Java version) The eight queens puzzle is the problem of placing eight chess queens on an 8×8 chessboard so was originally proposed in 1848 by the chess player Max Bezzel, and over the years, many mathematicians, including Gauss, have wo

java 使用回溯算法写的三连棋 shi yong yuan lai de shuru he shuchu -java backtracking to program a project tic-ta-toe