Hi,

I think, there are very few known problems that we don't have the solution (in mathematics) at the moment.

https://en.m.wikipedia.org/wiki/List_of_unsolved_problems_in_mathematicsHowever, I have no knowledge to generate such a new one.

How about, is there any reward if I asked Sudoku related question that might not be discussed earlier?

Let for example, we know how many Sudoku grids are present, essentially different Sudoku grids are present and 17 clues ED puzzles having unique solution at the moment. But, do we know how many

ED minimal clues Sudoku puzzles having unique solution are possible?

For each ED grid, how many minimal clues' puzzles are possible having unique solution? (I think maximum clues required to generate valid minimal clues' puzzle is 39. Where as minimum clues is 17.) Let start from the strangely familier grid that has only 29 different 17 clues' puzzles. How many SF grid has different 18-39 clues' puzzles?

http://english.log-it-ex.com/2.htmlR. Jamil______________________________________

There are millions of ways to solve Sudoku puzzles.

However, there are only n! ways to solve single Sudoku puzzle.

(Where n represent number of empty cells.)