Extreme Sudoku, SER ranked, made for reMarkable.
100 hyperlinked puzzles tuned for the reMarkable tablet. Tap a number to jump straight to its grid. Tap again to reach the answer. Quiet, high-contrast, stylus-ready.
Instant download | Two PDF layouts | Personal use
What you get
Everything in the pack
A focused set of extreme puzzles with the navigation and formatting an e-ink tablet wants.
100 extreme grids
One hundred puzzles in the SER 8.5 to 9.0 band. Advanced logic for solvers who want real difficulty, not filler.
SER labels on every page
Each puzzle carries its Sudoku Explainer Rating, so you know the exact challenge level before you start solving.
Hyperlinked index
Page two is a clickable index. Tap any puzzle number to jump straight to that grid on screen.
Tap-to-jump answers
Every puzzle page has an [Index] link and an [Answers] link, so you move between grids and the answer key with a single tap.
Complete answer key
Answers in back for all 100 puzzles, linked directly from each grid for fast checking.
README import guide
A README_FIRST.txt with import instructions and compatibility notes for the reMarkable apps.
Measured difficulty
SER ranked, not guessed
SER stands for Sudoku Explainer Rating, a number tied to the solving techniques a puzzle needs. Instead of a vague "expert" label, you get a measured band.
Built for the tablet
Formatted for e-ink and stylus
Black and white pages at reMarkable-friendly screen proportions. Clear grid line weights and comfortable cells for writing single digits with the Marker.
Standard reMarkable PDF
One layout for reMarkable 2 and reMarkable Paper Pro, sized for the standard screen.
Paper Pro Move PDF
A narrow layout built for the smaller 9:16 Paper Pro Move screen. Both layouts ship in the same pack.
Who it is for
Made for serious solvers
If you own an e-ink tablet and want demanding logic, this pack fits the way you already solve.
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reMarkable ownersYou solve on the tablet and want PDFs that fit the screen and the stylus.
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Experienced playersYou want SER 8.5 to 9.0 logic, not easy warm-up grids.
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Tidy, paper-free solversYou like a calm, quiet, screen-based puzzle session with no clutter.
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Fast navigatorsYou want to tap between puzzles and answers instead of scrolling page by page.
How it works
From download to first puzzle
A digital download. No physical product ships.
Buy and download
Complete checkout and download the files instantly.
Pick your layout
Use the standard PDF or the Paper Pro Move PDF for your device.
Import to reMarkable
Add the PDF through the desktop app, mobile app, or web account.
Tap and solve
Open the index, tap a puzzle, and start solving with the Marker.
Load 100 extreme puzzles onto your reMarkable.
SER 8.5 to 9.0, hyperlinked navigation, two e-ink layouts, answers in back. Instant download.
Get the pack $4.99