@KGB:
As you are the only who give me Feedback i wont to have your opinion

:
For the 1v1 it seems to me that its good to make Green vs White and Orange vs Green. I tryed Black vs Orange but Orange can operate fast to the Southeast and to the West. And Black is stuck in the Southwest. It seems that this is not a good challenge. Another one could be White vs Orange i think.
New Version has a far extended reaf at the Ice where the River comes in. Then the Orange player must move more and more over the Ice there...