Gomoku在java中评估函数

Question

我已经实现了一个使用alpha beta修剪的Gomoku Player类来为计算机选择最佳移动，但是我在编写评估函数以正确评分板上的每个位置时遇到了麻烦。

我有一个'evaluateBoard'方法，用于评估电路板位置并更新每行，列和对角线中的黑色，白色或空白位置的数量。我的'scoreChange'方法对每个位置进行评分，这就是我觉得我的程序出错的地方，因为当我连续3或4时它不会阻止我。

我如何正确评估和评分每个职位？

public int evaluateBoard(Color[][] board, Color computer) {
    int score = 0;
    //Check all the rows
    for (int i = 0; i < 8; ++i) {
        int blank = 0;
        int black = 0;
        int white = 0;
        for (int j = 0; j < 8; ++j) {
            if (board[i][j] == null) {
                blank++;
            } else if (board[i][j] == Color.black) {
                black++;
            } else {
                white++;
            }
        } 
        score+=scoreChange(black, white, computer); 
    }

    //Check all the columns
    for (int j = 0; j < 8; ++j) {
        int blank = 0;
        int black = 0;
        int white = 0;
        for (int i = 0; i < 8; ++i) {
            if (board[i][j] == null) {
                blank++;
            } else if (board[i][j] == Color.black) {
                black++;
            } else {
                white++;
            } 
        }
        score+=scoreChange(black, white, computer);
    }

    int blank = 0;
    int black = 0;
    int white = 0;
    //Check diagonal (first)
    for (int i = 0, j = 0; i < 8; ++i, ++j) {
        if (board[i][j] == Color.black) {
            black++;
        } else if (board[i][j] == Color.white) {
            white++;
        } else {
            blank++;
        }
    }
    score+=scoreChange(black, white, computer);

    blank = 0;
    black = 0;
    white = 0;
    //Check Diagonal (Second)
    for (int i = 7, j = 0; i > -1; --i, ++j) {
        if (board[i][j] == Color.black) {
            black++;
        } else if (board[i][j] == Color.white) {
            white++;
        } else {
            blank++;
        }
    }
    score+=scoreChange(black, white, computer);
    return score;
}

private int scoreChange(int black, int white){
    int change;
    if (black == 5) {
        change = -10000;
    } else if (black == 4 && white == 0) {
        change = -1000;
    } else if (black == 3 && white == 0) {
        change = -100;
    } else if (black == 2 && white == 0) {
        change = -10;
    } else if (black == 1 && white == 0) {
        change = -1;
    } else if (white == 5) {
        change = 10000;
    } else if (white == 4 && black == 0) {
        change = 1000;
    } else if (white == 3 && black == 0) {
        change = 100;
    } else if (white == 2 && black == 0) {
        change = 10;
    } else if (white == 1 && black == 0) {
        change = 1;
    } else {
        change = 0;
    } 
    return change;
}