The objective is to make your 5 chessmen sequentially be in a line, no matter in a traverse, lengthways or diagonal way. Meanwhile, you must try to prevent your rival achieving the objective before you do. In this game, you and the computer have chessmen in different colors respectively, and then take turns to put one chessman on the crossing of any two lines in the background each time. You cannot place your chessman into the panes or on the lines. The position you place your chessman should be carefully considered to achieve your objective and destroy the rival's intentions.