Beginner programmer Winboard and chess computing advice

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Hi Pedro
Thanks for your continued help! (Plenty there to work on!-this will take me a long time but it is good to have a goal to aim for! I am still digesting the winboard function code!..).
I have changed the "Eval" to -Eval
I do need to add proper castling function as it seems to stop after everytime a castling move is done.

Many thanks & best wishes