A 16x16 square divided into 4x4 subgrids (also called regions or blocks).
Go to the site and look for "16x16 Sudoku" or "Hexadoku." Their "Hard" and "Expert" levels are genuinely challenging. hexadoku 16x16 sudoku puzzles to print
This format is perfect for "heavy" solvers who find 9x9 puzzles too quick or repetitive. It's a great "coffee table" or "weekend project" puzzle. If you prefer a physical book over a printable PDF, similar 16x16 Super Sudoku volumes are available on . A 16x16 square divided into 4x4 subgrids (also
You’ve mastered the classic 9x9 grid. The 6x6 offerings feel like a warm-up. Now, it’s time to step into the big league: . hexadoku 16x16 sudoku puzzles to print