16x16 Hard Sudoku – Vertical

Description:

For Sudoku diehards seeking the ultimate test, look no further than our Sudoku setup. Featuring an impressive 16x16 grid, it offers a colossal number of cells to fill in, combined with the complexity of Hard difficulty. This means you’ll need patience, attention to detail, and solid Sudoku strategies to ensure no duplicates appear in any row, column, or sub-block.

What’s more, our puzzle generator is 100% free. You can keep printing new variations for practice or competition, all with no hidden costs. If you decide to tweak your Sudoku session—maybe jump down to 9x9 or switch over to a Very Hard difficulty—just press the “edit settings” button. After you preview your changes, download the new PDF and you’re all set. Challenge yourself with this expansive format, and embrace the gratification of solving such a formidable puzzle on your own terms.

The actual PDF might look slightly different compared to what you see as a preview.
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Customer reviews

0 of 5 stars 4.7 of 5 stars
Laura

Is a great product for the price

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Kindle Scribe Games
06 Feb, 2026
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Denae

Exactly what I was looking for

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Today hourly planner
05 Feb, 2026
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Mindy

My first maze was challenging and fun, looking forward to enjoying the rest of the collection.

03 Feb, 2026
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Jessica

Great templates for your happy planner

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Templates Premium Access
02 Feb, 2026
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Luis

I couldn’t be happier with this purchase! As a business owner, I’ve been on a quest for an e-planner that seamlessly integrates work and personal life. This planner offers the best of both worlds. After extensive research and trying out several options, I’m confident in its superiority. It functions flawlessly and boasts an intuitive navigation system. The planner is packed with numerous templates designed to motivate and help you achieve your goals in all aspects of life that matter most to you. I’m thrilled to use this e-planner and highly recommend it to anyone seeking a reliable and user-friendly planner. On top of everything, the exceptional service provided by Sydney, the owner, is truly superb. Thank you so much, Sydney - I look forward to making more purchases from your shop in the future! :)

30 Jan, 2026
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