How do you check whether any objects containing a certain instance variable exists

How can you check whether any objects containing a certain instance value exists without having to dedicate a variable to the check?

I need to do a lot of checks to see whether any Sprites containing certain instance values exist, and I don't want to have to manage a Dictionary or a set of variables in order to do each such check.

I'd instead prefer to be able to do a simple conditional check that is either inherently true or false.

Is there any way to do this?

"I need to do a lot of checks to see whether any Sprites containing certain instance values exist, and I don't want to have to manage a Dictionary or a set of variables in order to do each such check."

?

I mean there are ways of doing it but without using a variable I don't think so...

Yeah, I didn't understand the question either. What's wrong with "Object Compare instance variable" condition?