SER Ranked Extreme Sudoku for reMarkable - 100 hyperlinked Sudoku puzzles designed for e-ink solving.This digital Sudoku PDF pack is built for serious solvers who want real difficulty, clean tablet formatting, and fast navigation. Every puzzle is ranked by SER - Sudoku Explainer Rating - so you know exactly what level of challenge you are getting. These are EXTREME puzzles in the SER 8.5 to 9.0 range.Designed specifically for reMarkable tablets:• reMarkable 2• reMarkable Paper Pro• reMarkable Paper Pro MoveWHAT YOU GET• 100 extreme Sudoku puzzles• SER-ranked difficulty labels on every puzzle• Hyperlinked puzzle index• Tap-to-jump answer links• Complete answer key included• 2 optimized PDF layouts included: 1. Standard reMarkable PDF for reMarkable 2 / Paper Pro 2. Narrow Paper Pro Move PDF for the smaller 9:16 screen• README with import instructionsWHY SER RANKED MATTERSSER stands for Sudoku Explainer Rating. It is a difficulty rating based on the solving techniques required by the puzzle. Instead of vague labels like "hard" or "expert," this pack gives you measured extreme-level puzzles from SER 8.5 to 9.0.That means this pack is for experienced Sudoku solvers who want advanced logic, not easy filler puzzles.HYPERLINKED FOR REMARKABLEPage 2 is a clickable puzzle index. Tap any puzzle number to jump straight to that puzzle. Each puzzle page includes:• [Index] link to return to the puzzle index• [Answers] link to jump to the correct answer pageThe PDF is designed for finger-tap navigation and stylus solving on reMarkable.FORMATTED FOR E-INKThe pages are black and white, high contrast, and built at reMarkable-friendly screen proportions. The Sudoku grids use clear line weights and comfortable cell sizes for writing single digits with the reMarkable Marker.INCLUDED FILES1. Extreme Sudoku 100 - reMarkable Edition.pdf For reMarkable 2 and reMarkable Paper Pro2. Extreme Sudoku 100 - reMarkable Paper Pro Move.pdf For reMarkable Paper Pro Move3. README_FIRST.txt Import instructions and compatibility notesIMPORTANTThis is a digital download. No physical product will be shipped.After purchase, download the files from Etsy, then import the PDF into your reMarkable desktop app, mobile app, or web account.PERSONAL USE ONLYYou may use the files for your own personal puzzle solving. Please do not resell, redistribute, upload, share, or include these files in another product.DISCLAIMERThis is an independently created digital product by Pixel Wizard Press. reMarkable® is a registered trademark of reMarkable AS. Pixel Wizard Press is not affiliated with, endorsed by, or sponsored by reMarkable AS.