Sudoku is a classic logic-based puzzle game that challenges players to fill a 9x9 grid with numbers from 1 to 9. The objective is to ensure that each row, column, and 3x3 subgrid contains every digit exactly once, without repetition. Originally called "Number Place," Sudoku gained worldwide popularity due to its simple rules and engaging gameplay. It requires no mathematical skills—only logical reasoning and pattern recognition. Puzzles range from easy to expert levels, offering varying degrees of difficulty. Whether played in newspapers, books, or digital apps, Sudoku remains a favorite for sharpening the mind and improving concentration. Its timeless appeal lies in its ability to entertain while stimulating critical thinking. Perfect for solo play, Sudoku provides a satisfying mental workout for puzzle enthusiasts of all ages.