If true...Fudge might be a pawn

[ladyofmisrule2000]

Hey, all!

I was hoping somebody here could help me out. I don't know enough 
about chess to figure out if there's any symbolism to each piece that 
the members of the trio are assigned in The Sorcerer's Stone.

Ron: Knight
Harry: I think he was a Bishop
Hermione: Rook

Also, of all these three, isn't the rook the piece you'd be least 
likely to take risks with? (Aside from the King and Queen, of 
course.) Could Ron have been protecting Hermione a bit?

Thanks for your help!

Lori