NegaScout与国际象棋中的Zobrist换位表

我正在尝试将转置表放入我的alpha beta侦察机中。我确实看到了我认为在游戏中期或后期的增量速度提升，但是，即使表格大小为 1-2GB，它也可能比根本不从 Transpose 表中读取要慢，也可能不会慢。我还注意到，如果我在没有桌子的情况下玩完全相同的游戏，一些效率较低的动作。

我测试了我的 Zobrist 密钥哈希，即使在进行和撤消移动后，它们也能正常工作。我不认为他们是问题所在。我试图在设计 alpha/beta 修剪时遵循这些文章的建议。http://web.archive.org/web/20070809015843/http://www.seanet.com/~brucemo/topics/hashing.htm http://mediocrechess.blogspot.com/2007/01/guide-transposition-tables.html

谁能帮我识别错误？也许我不理解从哈希中检查 alpha 与 beta 的评估。还是 1-2GB 太小而无法发挥作用？如果需要，我可以发布更多的转置表代码。

    // !!!! With or without this specific section, and any other Transpose.Insert, doesn't make the game play or evaluate any faster.
    HashType type = HashType.AlphaPrune;
    HashEntry h = Transpose.GetInstance().Get(board.zobristKey);
    if (h != null)
    {
        if (h.depth >= depth)
        {
            if (h.flag == HashType.ExactPrune)
            {
                return h.scored;
            }
            if (h.flag == HashType.BetaPrune)
            {
                if(h.scoredState < beta)
                {
                    beta = h.scored;
                }
            }
            if (h.flag == HashType.AlphaPrune)
            {
                if(h.scoredState > alpha)
                {
                    alpha = h.scored;
                }
            }
            if (alpha >= beta)
            {
                return alpha;
            }
        }
    }
    if (board.terminal)
    {
        int scoredState = board.Evaluate(color);
        Table.GetInstance().Add(board.zobristKey, depth, Entry.EXACT, scoredState);
        return scoredState;
    }
    //May do Quescience search here if necessary && depth = 0
    Stack movesGenerated = GeneratePossibleMoves();
    while(!movesGenerated.isEmpty())
    {
        int scoredState = MAXNEGASCOUT;
        board.MakeMove(movesGenerated.pop());
        int newAlpha = -(alpha +1)
        scoredState = -alphaBetaScout(board, depth - 1, newAlpha, -alpha, !color, quiscence);
        if (scoredState < beta && alpha < scoredState)
        {
            scoredState = -alphaBetaScout(board, depth - 1, -beta, -scoredState, !color, quiscence);
        }
        board.UndoMove();
        if (scoredState >= beta)
        {
            Table.GetInstance().Add(key, depth, Entry.BETA, beta);
            return scoredState;
        }
        if (scoredState > alpha)
        {
            type = HashType.ExactPrune;
            alpha = scoredState;
        }
    }
    Table.GetInstance().Add(key, depth, type, alpha);
    return alpha;