in Italy it has three levels, easy, medium, difficult (and the forth actually is diabolic-evil). I'm happy to tell you that last sunday for the first time I started the difficult level: I'm still there. I needed three days for the medium, and by Christmas I'll finish this as well!!! yesterday I was sitting on a park bench, talking on my own -three, five, left, eight, no, here I can't- a teacher was there staring at me, but I didn't see him, after some minutes he came nearer, asking 'what are you doing...you seem so concentrated...' He might have thought I'm hopeless, but never mind, in christmas I'll tell him I've finished the difficult level : ))))
Maggie wrote me from Egypt, she's driving crazy as well, world would be better if wars would be replaced by sudoku global challenges.