Java 如何生成FEN字符串并将其发送给Stockfish？

我正在构建一个象棋GUI，它应该与Stockfish对话。我听说我必须生成一个FEN字符串，来告诉Stockfish已经做出的移动。所以问题是，我该怎么做？我在这里真的遇到了死胡同。。我正在使用EclipseIDE

我不确定您做了什么或使用了什么编程语言，但由于您使用的是EclipseIDE，我建议您使用Java

让Stockfish发挥作用的一个热门技巧是观看以下视频：

视频中链接的堆栈溢出：

因此，为了解决您的问题：

所以问题是，我该怎么做

好的，简单的解决方案是寻找已经实施的项目。我知道有很多。如果您想要一种简单而笨拙的Java字符串制作方法，我为您制作了如下：

注意：此实现认为您的整个电路板都在一个字符串中[][]（我没有在这么晚的时间制造更高级的麻烦）

注2：它不会构成整个FEN字符串。它缺少了活动颜色、Castle可用性、中途、半移动时钟和全移动号码，但我相信您将能够轻松实现这一点

输出：

rnbqkbnr/PPPP/8/8/8/PPPP/rnbqkbnr

private final String RANK_SEPARATOR=“/”；
专用字符串[][]板={
{“r”、“n”、“b”、“q”、“k”、“b”、“n”、“r”}，
{“p”，“p”，“p”，“p”，“p”，“p”，“p”，“p”，“p”，“p”，“p”}，
{"","","","","","","",""},
{"","","","","","","",""},
{"","","","","","","",""},
{"","","","","","","",""},
{“P”，“P”，“P”，“P”，“P”，“P”，“P”，“P”，“P”，“P”，“P”}，
{“R”、“N”、“B”、“Q”、“K”、“B”、“N”、“R”}
};
公共字符串translateBoardToFEN（字符串[][]板）{
字符串fen=“”；
for（int-rank=0；rank

我不想重复我的答案。请查看我发布的内容：

该方法简单且定义明确。显示您的代码尝试并指出问题所在。

private final String RANK_SEPARATOR = "/";

private String[][] board = {
        {"r","n","b","q","k","b","n","r"},
        {"p","p","p","p","p","p","p","p"},
        {"","","","","","","",""},
        {"","","","","","","",""},
        {"","","","","","","",""},
        {"","","","","","","",""},
        {"P","P","P","P","P","P","P","P"},
        {"R","N","B","Q","K","B","N","R"}
};

public String translateBoardToFEN(String[][] board) {
    String fen = "";
    for (int rank = 0; rank < board.length; rank++) {
        // count empty fields
        int empty = 0;
        // empty string for each rank
        String rankFen = "";
        for (int file = 0; file < board[rank].length; file++) {
            if(board[rank][file].length() == 0) {
                empty++;
            } else {
                // add the number to the fen if not zero.
                if (empty != 0) rankFen += empty;
                // add the letter to the fen
                rankFen += board[rank][file];
                // reset the empty
                empty = 0;
            }
        }
        // add the number to the fen if not zero.
        if (empty != 0) rankFen += empty;
        // add the rank to the fen
        fen += rankFen;
        // add rank separator. If last then add a space
        if (!(rank == board.length-1)) {
            fen += RANK_SEPARATOR;
        } else {
            fen += " ";
        }
    }
    return fen;
}