The game consists of a grid divided into nine smaller grids, each containing nine squares. The objective is to fill in the grid so that every row, every column, and every 3x3 grid contains the digits 1 through 9 without repetition.

Players are presented with a partially filled grid and must use logic and deduction to figure out which numbers belong in the empty squares. The puzzle may seem simple at first glance, but as players progress, the difficulty increases, requiring more advanced strategies and problem-solving skills.

Sudoku is not only an entertaining pastime but also a great way to exercise the brain. It challenges players to think critically, improve their concentration, and enhance their memory.