chess eval

gistfile1.txt

def evaluate_board():
    
    if board.is_checkmate():
        if board.turn:
            return -9999
        else:
            return 9999
    if board.is_stalemate():
        return 0
    if board.is_insufficient_material():
        return 0
    
    wp = len(board.pieces(chess.PAWN, chess.WHITE))
    bp = len(board.pieces(chess.PAWN, chess.BLACK))
    wn = len(board.pieces(chess.KNIGHT, chess.WHITE))
    bn = len(board.pieces(chess.KNIGHT, chess.BLACK))
    wb = len(board.pieces(chess.BISHOP, chess.WHITE))
    bb = len(board.pieces(chess.BISHOP, chess.BLACK))
    wr = len(board.pieces(chess.ROOK, chess.WHITE))
    br = len(board.pieces(chess.ROOK, chess.BLACK))
    wq = len(board.pieces(chess.QUEEN, chess.WHITE))
    bq = len(board.pieces(chess.QUEEN, chess.BLACK))
    
    material = 100*(wp-bp)+320*(wn-bn)+330*(wb-bb)+500*(wr-br)+900*(wq-bq)
    
    pawnsq = sum([pawntable[i] for i in board.pieces(chess.PAWN, chess.WHITE)])
    pawnsq= pawnsq + sum([-pawntable[chess.square_mirror(i)] 
                                    for i in board.pieces(chess.PAWN, chess.BLACK)])
    knightsq = sum([knightstable[i] for i in board.pieces(chess.KNIGHT, chess.WHITE)])
    knightsq = knightsq + sum([-knightstable[chess.square_mirror(i)] 
                                    for i in board.pieces(chess.KNIGHT, chess.BLACK)])
    bishopsq= sum([bishopstable[i] for i in board.pieces(chess.BISHOP, chess.WHITE)])
    bishopsq= bishopsq + sum([-bishopstable[chess.square_mirror(i)] 
                                    for i in board.pieces(chess.BISHOP, chess.BLACK)])
    rooksq = sum([rookstable[i] for i in board.pieces(chess.ROOK, chess.WHITE)]) 
    rooksq = rooksq + sum([-rookstable[chess.square_mirror(i)] 
                                    for i in board.pieces(chess.ROOK, chess.BLACK)])
    queensq = sum([queenstable[i] for i in board.pieces(chess.QUEEN, chess.WHITE)]) 
    queensq = queensq + sum([-queenstable[chess.square_mirror(i)] 
                                    for i in board.pieces(chess.QUEEN, chess.BLACK)])
    kingsq = sum([kingstable[i] for i in board.pieces(chess.KING, chess.WHITE)]) 
    kingsq = kingsq + sum([-kingstable[chess.square_mirror(i)] 
                                    for i in board.pieces(chess.KING, chess.BLACK)])
    
    eval = material + pawnsq + knightsq + bishopsq+ rooksq+ queensq + kingsq
    if board.turn:
        return eval
    else:
        return -eval