Classic Hard Sudoku 9x9 Vertical

Craving a focused Sudoku challenge? Our 9x9 Hard Sudoku in Vertical layout gives you a single puzzle on each page, stacked neatly for vertical printing. This classic 9x9 grid at Hard difficulty means you’ll need to apply solid logical reasoning, checking each row, column, and 3x3 box meticulously to avoid repeating numbers. You’ll get all the satisfaction of solving a tried-and-true Sudoku while enjoying the ease of having just one puzzle per sheet.

Best of all, our service is entirely free. You can print out as many copies as you like, which is perfect if you want a consistent challenge or plan to share with friends. Before you finalize your download, remember to click the “edit settings” button if you want to experiment with different difficulty levels or grid sizes—our generator lets you customize everything from Very Easy to Very Hard, as well as from 4x4 to 16x16. Once you’re happy with your setup, simply preview and print your single-page Sudoku for a hassle-free puzzle-solving session.