I am a sudoku fanatic, i can go on for days solving and munching my nachos, it is like binge-watching for me, but i hated the ones with tight binded books i could not even flatten the book while solving it, but this one is so so so good, since it has this metal spiral on top and you can just put it over any surface. Only downside is that they haven’t released a new version of it up until now.
