What is the difference between classic and Killer Sudoku
The primary difference between classic Sudoku and Killer Sudoku lies in their gameplay mechanics: Grid Structure Classic Sudoku: The grid is divided into 9 rows, 9 columns, and 9 3×3 subgrids (regions). Killer Sudoku: The grid is also divided into 9 rows, 9 columns, and 9 regions, but these regions can be irregular in shape, … Read more