🚀 go-pugleaf

Can anyone give me a hint as to how to go about writing a perl script to
act as an interface to gnuchess?  I am not concerned with a graphical
interface at this point, just the mechanics of inputing moves to the
gnuchess engine and then receiving responses.  

I tried fiddling around with opening a handle to "gnuchessc |" and
reading from it (which seemed to work), but then how do you input moves?
Is there a bi-directional pipe?!?  Surely there's a more clever way...

Yes, this is a silly thing to want to do, but I'm doing it more to learn
perl rather than to write a gnuchess interface, since there's already a
bunch out there.

Thanx.
-MK