Play fair cipher algorithm has demonstrated its success for encryption of text messages over the years. This algorithm uses normally 5 by 5 matrices. The main disadvantages of this matrix are the user cannot use numeric and also have to compromise between I and J. Here the authors use this concept but extends the matrix dimension 6 by 6, so that they can include numeric as well as I and J. To make the algorithm stronger here they use four iteration steps instead of one. Finally they have implemented this concept with the help of MATLAB.