Sudoku is a game that challenges players to use logic and critical thinking to solve a number puzzle. To play, use the mouse and keyboard to place numbers 1-9 in the grid, filling in each row, column, and 3x3 box with the correct numbers. The difficulty level can be adjusted from beginner to intermediate or advanced. To improve your solving skills, try focusing on a specific part of the puzzle, spot the missing numbers, fill in the candidates, look for hidden singles, and find naked pairs. Playing Sudoku helps to enhance concentration, memory and strategic thinking.