Check collums, rows and the larger squares. The numbers 1-9 must feature in each but you can only use them once.
I always start with # which are more in all squares. Then I try to do on row at a time. I love sudoku.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.