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 Sudoku, brain game, logic puzzle, number puzzle, 9x9 Sudoku, concentration, brain training, puzzle game, mental exercise, cognitive skills, online Sudoku, free Sudoku, challenging Sudoku, number placement, row, column, block, brain workout, brain power