English: “Hridayeshwar Singh Bhati” and his elder brother Keshav Singh Bhati(12 years) have invented 16 x 16 Sudoku and applied for patent in India. The original idea struck to “Hridayeshwar Singh Bhati” and is made by both of them. Going further “Hridayeshwar Singh Bhati” has also given idea of making Sudoku of 25 x 25, 36 x 36, and 49 x 49 and so on. Both the brothers are busy with even higher versions of Sudoku as they have already invented 16 x 16 Sudoku. 16x16 Sudoku will be a logic-based, number-placement puzzle having unique solution. The ultimate objective will be to fill a 16x16 grid with numbers 1 to 16 so that each column, each row, and each of the 16, 4x4 sub-grids that compose the grid (also called "boxes", "blocks", "regions", or "sub-squares") contains all of the digits from 1 to 16.

Evidence: Please inspect the sample of 16 x 16 Sudoku image and following link: Sample of 16 x 16 Sudoku: The attached file is a very easy 16 x 16 Sudoku having unique solution, that too following trends and patterns. Since the invention is in patent process therefore the actual 16 x 16 can’t be shared. http://hridayeshwarsinghbhati.com/site/16x16-sudoku/

More about inventor : https://en.wikipedia.org/wiki/Hridayeshwar_Singh_Bhati

http://hridayeshwarsinghbhati.com/site/