Quixo

Your goal is to arrange five of your cubes in a row-either horizontally, vertically, or diagonally. Each turn, remove a blank cube from the edge of the board and slide it into the end of one of the rows made incomplete by its removal, pushing the other four cubes together to fill up the empty space. Now the entire row has changed.

Did you become one step closer to winning, or did you inadvertently help your opponent?