Classic Sudoku is a logic-based puzzle game that has gained worldwide popularity. The game is played on a 9x9 grid, which is further divided into nine 3x3 boxes. The objective of the game is to fill in each square of the grid with a number from 1 to 9, making sure that each row, column, and 3x3 box contains all the numbers from 1 to 9 without repeating any numbers.

The game starts with a partially filled grid, and the player must use logic and deduction to fill in the missing numbers.

To solve the puzzle, the player must follow a set of rules:

Each row must contain all the numbers from 1 to 9 without repeating any numbers.

Each column must contain all the numbers from 1 to 9 without repeating any numbers.

Each 3x3 box must contain all the numbers from 1 to 9 without repeating any numbers.

As the player fills in more and more squares, the puzzle becomes increasingly challenging. Some squares may have multiple possible solutions, and the player must use logic and deduction to determine the correct answer.

Sudoku is a game that requires patience, concentration, and logical thinking. It's a great way to exercise your brain and improve your problem-solving skills. With its simple rules and endless variations, Sudoku is a classic puzzle game that can be enjoyed by people of all ages and skill levels.