I've been working with the sudoku package for LaTeX too for the new website I'm working on:
https://www.mobileread.com/forums/sho...?threadid=8840
My goal is to include small plugins for the Newspaper section of the section. This way you could get daily sudokus included in the same PDF that you're using to read RSS feeds. The goal is to recreate the whole newspaper experience but on e-ink devices, and I do believe that sudokus are part of it.
The LaTeX package makes great looking sudokus but I'm not sure how I'll generate these yet. I guess that using an algorithm + allowing people to create sudokus directly on the website would be the best solution, this way you could subscribe to someone sudoku's feed.