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
Bernard

That's perfect, thank you :)
That's perfect, thank you :)

20 Jul, 2025
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Tessa-Leigh

The item met my expectations

Purchased item:

Simple budget template
20 Jul, 2025
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Kat

Absolutely blown away by the features and customization options for this planner. It truly lets you build your dream planner! So well thought out and designed. I hated having to switch back and forth between files on my reMarkable. Now I have a planner and notebook that I never have to exit, because everything is in one place and well organized. The hyperlinks are so well done! I will come back for this one next year for sure! I would love the addition of some copy and paste stickers in the future. I was able to get some of those elsewhere and build a sticker section into the planner. But it was a bit time consuming. Would love to have this included one day. Highly recommend this planner!!! Well done!

20 Jul, 2025
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Maria

Amazing array of templates available for Remarkable2

20 Jul, 2025
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ASDarling

the PDF's work well with my Onyx Note Air, and they are easy to edit and mark up. The tool for customizing is great with a ton of options.

20 Jul, 2025
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