Havannah is an innovative variation of Hex, played on a hex-hex board
with any number of cells per edge. There are 3 ways to win;
forming a "bridge" connecting two corners, forming a "fork" connecting
3 sides, or forming a "ring" which is any closed loop. Draws are
possible, but are extremely rare. Read the complete rules here.
Invented by Christian Freeling, who says "It
should be noted that Havannah didn't emerge from any a priori concept.
It was just a lucky merger of three winning conditions." Indeed.
Whereas hex involves careful analysys of one kind of
influence, the multiple goals in Havannah create a much more
complex and varied landscape.
Robots: Robot seems to be adequate, if not stellar.