The current pre-release of the client ("pioneer" in the version) is only compatible to itself. So you can only play with other testers. Please be aware!
@SpicerXD I see, im not sure on that one, other than perhaps some highlighted edge means seems a loss is placed elsewhere.
Given of course a move to the side would be valid as a highlighted edge move at a time, but seems still to opaque to still a possible opaque solution.