Is it safe to remove chess.app I was cleaning my MBP out the other day and found chess.app in my /applications folder. I tried deleting it and Yosemite gave me this error:

Is this safe to delete? I was able to delete the DVD Player application just fine. So why can't I delete chess.app? Does this have some system files hidden inside it? Could I simply delete it by doing sudo rm -rf /Applications/Chess.app? If it is safe to delete then why doesn't it let you do it by finder? I mean how many people who use OS X use chess.app?
I have deleted Chess.app from every version of Mac OS X and OS X that I've used starting with Mac OS X 10.4.x and have never had an issue from doing so.

You can use AppCleaner to do it, although you first need to uncheck [] Protect default apps in its General Preferences.

Note:  To all that have commented about not removing Chess.app, it is for each User to decide whether or not one wants to keep an app that is of no use to them and will have absolutely no side effect whatsoever in removing it, providing it's done in a safe manner.