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
Only Connect then a single sudden-death puzzle is given to the captains of each team. If a captain buzzes in first and gives the correct answer then their team wins, but an incorrect answer automatically forfeits the game. Although no category is officially given they make reference to their own role as sudden-death questions. Examples are "So Long and Thanks for All the Fish", "To the Victor, the Spoils" and "Winner Stays On". Only Connect Only Connect is a British game show presented by Victoria Coren Mitchell. It aired on BBC Four from 15 September 2008 to 7 July 2014 and then