Connect Four on 6 high, 7 wide grid, there are 4,531,985,219,092 positions for all game boards populated with 0 to 42 pieces. The game was first solved by James Dow Allen (October 1, 1988), and independently by Victor Allis (October 16, 1988). Allis describes a knowledge-based approach, with nine strategies, as a solution for Connect Four. Allen also describes winning strategies in his analysis of the game. At the time of the initial solutions for Connect Four, brute-force analysis was not deemed feasible given the game's complexity and the computer technology available at the time. Connect Four has since been solved with
Connect Transit Day, Memorial Day, Independence Day, Labor Day, Thanksgiving, or Christmas. Basic adult fare is $1. Bus passes valid for 1, 7, or 30 days are available. Connect Transit has two main transfer centers. Uptown Station, located in Normal, is also served by Amtrak and by intercity buses. Eight routes have one terminus here. The other transfer center is two miles to the south, in downtown Bloomington. Nine routes have one terminus here. The Green, Red, and Lime routes serve both locations. Only the Olive route does not go to either transfer center. Individual routes Connect Transit Connect Transit, formerly Bloomington-Normal