Four in a row

Connect Four 

(also known as Four in a Row is a two-player board game in which the players first choose a color and then take turns dropping one colored disc from the top into a seven-column, six-row vertically suspended (/7 x 6 grid. ) usually on a gadget. The pieces fall straight down, . 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.

In the paper version, a 7 x 6 grid is drawn and marked ( columns A to G and Rows 1 to 6). The players either choose pence marks ( X And 0 ) to distinguish between them or small colored ( blue and and red) circles to distinguish between them  .0n the grid the columns are identified by letters of the alphabet from A to G starting from the left and rows identified by letters of the digits 1 to 6 with 1 being at the bottom. Since there is no gravity here, the rows  1 to 6 will have to be filled in ascending order. In other words you can’t put your disc in c3 until there is a disc in c2.