1)- Sudoku Programming with C : http://www.apress.com/gp/book/9781484209967 http://www.apress.com/gp/book/9781484209967 2)- Programming Sudoku : http://www.apre

1)- Sudoku Programming with C : http://www.apress.com/gp/book/9781484209967 http://www.apress.com/gp/book/9781484209967 2)- Programming Sudoku : http://www.apress.com/gp/book/9781590596623 http://www.apress.com/gp/book/9781590596623 I haven't read any of them though. They are on my list of "books to read in the future"