Which book should be the next book?
I've been trying to decide what type of book to do next, initially
thinking something like a "holiday puzzle book" with sudoku + calcudoku + killer sudoku.
Other ideas are:
- a book with "ultra difficult" puzzles (a bit gimmicky maybe)
- multiple books with puzzles in different sizes / difficulty levels (it looks like one author
is already swamping Amazon with such books)
- an online system where you can compile your own book: pick sets of the puzzles
you like, then download a PDF
- ?
Preferences & suggestions welcome
Patrick