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. Weekend Sudoku, Sudoku puzzle, brain training, number puzzle, logic puzzle, concentration, brain power, mental exercise, cognitive skills, problem solving, 9x9 grid, online Sudoku, free Sudoku, brain game, relaxing activity, leisure time, logical thinking, memory improvement, stress relief