check_move

bool check_move(int col_from, int row_from, int col_to, int row_to, int board[8][8], bool is_white_move)
{
    // czy ruch miesci sie w planszy
    if (col_from < 0 || col_from > 7 || col_to < 0 || col_to > 7)
        return false;
    else if (row_from < 0 || row_from > 7 || row_to < 0 || row_to > 7)
        return false;
    // czy nie idziemy na biale pole
    else if (board[row_to][col_to] == 0)
        return false;
    // czy na polu skad zaczynamy stoi nasz pion
    else if (board[col_from][row_from] <= 1)
        return false;
    else if (board[col_from][row_from] == 2 && is_white_move)
        return false;
    else if (board[col_from][row_from] == 3 && !is_white_move)
        return false;
    // czy pole na ktore się ruszamy jest puste;
    else if (board[col_to][row_to] != 1)
        return false;
    else if (col_from == col_to || row_from == row_to)
        return false;

    // czy o jedno lub 2 pola po skosie
    if (abs(col_from - col_to) == 1 && abs(row_from - col_to) == 1)
        return true;
    else if (abs(col_from - col_to) == 2 && abs(row_from - col_to) == 2)
    {
        if (is_white_move)
        {
            if (col_from - col_to > 0 && row_from - row_to > 0)
            {
                if (board[row_from - 1][col_from - 1] == 2)
                    return true;
            }
            else if (col_from - col_to < 0 && row_from - row_to > 0)
            {
                if (board[row_from - 1][col_from + 1] == 2)
                    return true;
            }
            else if (col_from - col_to > 0 && row_from - row_to < 0)
            {
                if (board[row_from + 1][col_from - 1] == 2)
                    return true;
            }
            else if (col_from - col_to < 0 && row_from - row_to < 0)
            {
                if (board[row_from + 1][col_from + 1] == 2)
                    return true;
            }
            return false;
        }
        else
        {
            if (col_from - col_to > 0 && row_from - row_to > 0)
            {
                if (board[row_from - 1][col_from - 1] == 3)
                    return true;
            }
            else if (col_from - col_to < 0 && row_from - row_to > 0)
            {
                if (board[row_from - 1][col_from + 1] == 3)
                    return true;
            }
            else if (col_from - col_to > 0 && row_from - row_to < 0)
            {
                if (board[row_from + 1][col_from - 1] == 3)
                    return true;
            }
            else if (col_from - col_to < 0 && row_from - row_to < 0)
            {
                if (board[row_from + 1][col_from + 1] == 3)
                    return true;
            }
            return false;
        }
        return false;
    }
}