Sudoku is a puzzle that has many different variations. The most common type of Sudoku is the 9×9 grid with nine 3×3 subgrids. However, there are also 4×4, 6×6, 12×12, and 16×16 Sudoku puzzles.

How to Solve Hard Sudoku If you’re struggling to solve a hard Sudoku puzzle, there are some tips and tricks that can help. First, try to