Connect four is a simple board game: https://www.youtube.com/watch?v=ylZBRUJi3UQ
Haven't captured a few edge cases (i.e. wrong user input/invalid moves, index out of bound)
Will be fixed in the next release! :p :p
Connect Four (also known as Four Up, Plot Four, Find Four, Four in a Row, Four in a Line, Drop Four, and Gravitrips in the Soviet Union) is a two-player connection board game, in which the players choose a color and then take turns dropping colored discs into a seven-column, six-row vertically suspended grid. The pieces fall straight down, occupying the lowest available space within the column. The objective of the game is to be the first to form a horizontal, vertical, or diagonal line of four of one's own discs. Connect Four is a solved game. The first player can always win by playing the right moves. Reference: Wikipedia- https://en.wikipedia.org/wiki/Connect_Four