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Question: I purchased CB 13 Premium which includes one year premium membership on playchess.com. I have registered CB13.
What more do I do?
Answer: In this case you will find a small card in DIN A6 size inside your CB 13 Premium Package.
On this card you will find a Premium serial number.
Login with your account to the playchess server and register your account with that key through My Account – Enter serial number.