15x15 Hard Sudoku – Vertical
Description:
Take Sudoku to a grand scale with our Sudoku Hard 15x15 Vertical. This layout grants you a tall, spacious grid that’s bound to challenge even seasoned players. Filling every row, column, and subregion correctly on a 15x15 board at Hard difficulty requires patience, strong strategy, and a knack for spotting subtle patterns—making it a perfect choice for puzzle enthusiasts looking to level up.
Because our platform is free, you can download and print as many puzzles as you want. Whether you’re craving an even larger grid or want to explore different difficulty settings, just click the “edit settings” button before confirming your download. That way, you’ll have a puzzle that matches exactly how you want to play, be it a smaller 9x9 or an even more colossal 16x16. It’s a flexible, no-cost way to get your brain firing on all cylinders and keep your Sudoku experience fresh every time.
Customer reviews
Sorry! I wrote a review and forgot to put stars!! I loved the previous planners I've used but this version doesn't seem to have functionality with Supernote digest, "to do," and calendar functions or the ability to "insert page". If this were fixed, I would give 5 stars!
Purchased item:
Supernote Bullet Journal
I have absolutely loved your previous planners for my Supernote A5X! However, the 2026 version doesn't have the functionality of the previous years. There's no way to add pages (like for longer journal entries), the "digest" feature is completely unusable, as is the ability to circle text and send it to my "To Do" list or the Calendar in the Supernote.
I spent a lot of time setting up my perfect planner before I realized the problems it had. Without these essential features, I won't be able to use the planner anymore and will now have to search elsewhere. Is there any plan to fix this?? I hope!
Purchased item:
Supernote Bullet Journal
es genial! totalmente personalizable
Purchased item:
Kindle Scribe Ultimate Planner
It's my third year of using it. Always useful and customizable
Purchased item:
Ultimate Planner for reMarkable
is it possible to have 4 pages for daily Pages section rather than 2?
Purchased item:
ONYX BOOX - Ultimate Planner