Sudoku is one of the most popular logic games of all time. The goal of Sudoku is to fill a 9x9 table with numbers so that each row, column, and 3x3 section contains all the numbers from 1 to 9. Being a logic puzzle, Sudoku is an excellent brain exercise game. If you make sure to play Sudoku every day, you will start to see an improvement in your concentration and mental strength in general. Start playing now. Sudoku will quickly become your favorite online game.