I would like to report my "10 Driven Sudoku" ebook.
https://payhip.com/b/Qirx
It seems impossible, but this ebook was designed for playing sudoku on all ebook readers, even old ones such as the Kindle Paperwhite or earlier e-ink devices, in addition of course to all the most recent readers (It works even on PC with ebook reader software like Calibre).
A new way to take a break between one novel and another with our favorite pastime!
But, what is a Driven Sudoku? It is a traditional sudoku in which every grid asks the player the digit of a single cell, the "input cell". If the chosen digit is correct, the game moves to the next grid "updated", placed on another page (but NOT the next page...

I thank anyone who wants to try and give me any positive feedback I hope.
Francesco