public bool ProbeScore(ZobristHash hash, int alpha, int beta, int depth, ref int score)
{
int i = CalculateHashIndex(hash);
if (m_hashTable[i].Flag != AlphaBetaFlag.NoScore && hash.Equals(m_hashTable[i].Hash))
{
if (m_hashTable[i].Depth >= depth)
{
if (m_hashTable[i].Flag == AlphaBetaFlag.ExactScore)
{
score = m_hashTable[i].Score;
return true;
}
if (m_hashTable[i].Flag == AlphaBetaFlag.AlphaScore && m_hashTable[i].Score <= alpha)
{
score = alpha;
return true;
}
if (m_hashTable[i].Flag == AlphaBetaFlag.BetaScore && m_hashTable[i].Score >= beta)
{
score = beta;
return true;
}
}
}
return false;
}
public MoveIdentifier ProbePvMove(ZobristHash hash)
{
int i = CalculateHashIndex(hash);
if (m_hashTable[i].Flag != AlphaBetaFlag.NoScore && hash.Equals(m_hashTable[i].Hash))
return m_hashTable[i].PvMove;
else
return new MoveIdentifier(Square.None, Square.None, Piece.None);
}