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?