If you are a user of any Chess King software we love you and want to do all we can to have you upgrade to our newest and best versions, Chess King Standard 2016 and Chess King Silver 2016 and Chess King Gold 2016. We have great upgrade offers for all users of any prior version of Chess King. If you have any questions, email us to firstname.lastname@example.org. You will need to provide your current serial number to qualify for the upgrade. For a limited time, users of the 2015 Chess King Standard, Silver and Gold can get a free upgrade to the 2016 version of Chess King Standard, Silver, or Gold. Email us with your valid serial number to qualify for it. For this free upgrade, you need to have a full Chess King 2015 license, with either 22007, or 25051 or 25052 in the second group of numbers of your serial number. If you have got Chess King 2015 by upgrade and have a 25050 you need to get a Full Version Upgrade which will give you a Full version which does not require you to have any prior version installed and gives a brand new serial number 22007, or 25051 or 25052 in the second group of numbers with 4 new activations allowed.