Will a richer fuel mixture prevent a high compression motor from engine knock?

Will a richer fuel mixture prevent a high compression motor from engine knock?
The three things that will help you're knocking problem are:1. Retard the timing.2. Use higher octane fuel3. Lower the combustion temp by adding an EGR valve, or making sure the one you have works.I'd assume the EGR valve is not something that you want to do. I wouldn't.Obviously, "4" would be swap out the heads to ones with a bigger combustion chamber thus reducing the compression.A lean mixture will give you a "lean misfire".