Google AI Challenge game where my bot "runevision" exterminates the bot "strcat" despite its attempt to keep up its defense. Well, I guess the game ended before it lost its last hill but only just. From the final tournament of the 2011 AI Challenge. http://aichallenge.org http://blog.runevision.com
Maybe if your ants know they're in a large group, some of them can risk a suicide attack to distract the other side for a moment?
zarawesome 1 day ago