Strategies for Solving Difficult Sudoku Puzzles
Introduction to Sudoku and Its Popularity Sudoku, a brain-teasing puzzle game, has captured the minds of millions. Originating from Japan, its name means ‘single number’. It has now become a daily staple for puzzle enthusiasts around the globe. Sudoku involves filling a 9×9 grid with numbers. Each row, column, and 3×3 subgrid must contain all