I think it's a against the rules to do this. Why would you want to do it anyway? What you can do is ask the administrators to change your username.
Confused
Try http://www.chess.com/home/cancellation.html?type=account first and then, if you really wanted to, register again. Or, try http://support.chess.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=61 to change username.
They don't like you to cancel though mate, but who gives a donald? *Annoyingly deletes account*
hello can someone help out, is it possible to delete your current account so I can make a new one with the email i'm using? help appreciated