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A third body in an eclipsing binary system causes regular periodic changes inthe observed (O) minus the computed (C) eclipse epochs. Fourth bodies arerarely detected from the O-C data. We apply the new Discrete Chi-square method(DCM) to the O-C data of the eclipsing binary XZ Andromedae. These data containthe periodic signatures of at least ten wide orbit stars (WOSs). Their orbitalperiods are between 1.6 and 91.7 years. since no changes have been observed inthe eclipses of XZ And during the past 127 years, the orbits of all these WOSsare most probably co-planar. We give detailed instructions of how theprofessional and the amateur astronomers can easily repeat all stages of ourDCM analysis with an ordinary PC, as well as apply this method to O-C data ofother eclipsing binaries.

About ten stars orbit eclipsing binary XZ And