Upgrading from Lite to Pro
Once your payment has been processed you will receive a confirmation e-mail
from Kagi (normally within a few hours). A few days later you will receive
another e-mail from the author of Sigma Chess containing a unique Serial
Number and a personal License Key. In order to upgrade to Sigma
Chess 6.1 Pro, you then simply click the Upgrade button in the Sigma
Chess 6.1 About dialog and enter this license information. From then on
Sigma Chess 6.1 will run in "Pro" mode with the full feature list enabled!
"Why haven't I received my license code?":
If several days have passed and you still haven't received your license code
by e-mail, please send me an e-mail
so I can resend it. A common problem is that a customer accidentally
specifies an incorrect e-mail address in the payment, and therefore won't
receive the license code (it's bounced back to me, and I have no way of telling
the customer to send the correct license code!)
Note: All future updates to Sigma Chess 6.1 Pro are provided free of
charge for owners of Sigma Chess 6.1 Pro. You simply need to download the new
version 6.x.x here. It will automatically
run in Pro mode.