Ultimate Sudoku Collection contains several variations of Sudoku game. It is a challenging puzzle wherein players insert the numbers one to nine into a grid consisting of nine squares subdivided into a further nine smaller squares in such a way that every number appears once in each horizontal line, vertical line, and square. Puzzles such as Sudoku can help delay dementia and Alzheimer’s disease, and protect the brain from decline. It also offers good exercise and stimulation for the brain. Once you’re done, you can try your hand at more free games here on Your Wise Life by accessing the Games menu. Have fun!