Sudoku is a number-based logic puzzle that is played on a 9x9 grid. The objective of the game is to fill the grid with numbers in such a way that each row, column, and 3x3 sub-grid contains all the digits from 1 to 9. Here are the steps to play Sudoku:

Familiarize yourself with the grid: The 9x9 grid is divided into 9 smaller 3x3 sub-grids, and each row and column is also labeled.

Look for starting points: Often, there will be a few numbers already filled in the grid. Use these as starting points to fill in the rest of the grid.

Use logic to fill in the numbers: For each empty cell, look at the other numbers in its row, column, and sub-grid. Eliminate the numbers that are already used in the same row, column, or sub-grid, and fill in the missing number that is not used.

Repeat the process: Keep using logic and the process of elimination to fill in the rest of the grid.

Check your work: Once you have filled in the entire grid, check your work to make sure that each row, column, and sub-grid contains all the digits from 1 to 9.

Note: There may be multiple solutions to a single Sudoku puzzle, so don't worry if your solution is different from others. The important thing is that each row, column, and sub-grid contains all the digits from 1 to 9.