Voyage to Rome by Telcontar (cartho@netlink.ch)
4 players
The concept is that there is always one mine less in each circle, 
corresponding to the decreasing number of chairs in the game mentioned above.
Thus, there should always be one player who eliminates another one :)
Starting mines: 70 K
Oil: 4 x (10+40) K
Expansion mines: between 40 and 80 K (center)