Typo (opposity = opposite)

Opposity is a chess term referring to when a bishop is not, in fact, the same color as the bishop you are referring to

That's just slang for opposite

opposite or opposing?

A clumsy sentence either way given the use of 'as opposed' in the same sentence.

If you click on "Help", there's an option for "Report a Bug". I don't know that we need a new thread for this sort of thing.

Either method is acceptable, though for simpler things like that, the Report a Bug method is probably best, since it doesn't really need to be verified/, recreated.

"opposition defiance disordered". Though probably it would have to be a pawn. People with ODD don't rise to the rank of bishop.