Sudoku is one of the most popular puzzle games of all time. The goal of Sudoku is to fill a 9×9 grid with numbers so that each row, column and 3×3 section contain all of the digits between 1 and 9. As a logic puzzle, Sudoku is also an excellent brain game. If you play Sudoku daily, you will soon start to see improvements in your concentration and overall brain power. Start a game now. Sudoku, weekend puzzle, brain training, number puzzle, logic puzzle, concentration, cognitive function, brain exercise, mental stimulation, online sudoku, puzzle game, 9x9 grid, number game, brain workout, relaxing game, easy to play, mouse interaction, mental challenge, improve concentration