Okay, So I have this Mensa Sudoku book that says its only rule is to not guess. They have the answers in the back but they don't tell you how they got them. Can someone get a new number in the following puzzle and more importantly tell me how they got it.
6xxx257x9
xx764xx2x
xxxx7xxxx
3189642xx
596217834
xxx583691
xxx45x9x3
x8x1324xx
4x379xxx2
Thanks
6xxx257x9
xx764xx2x
xxxx7xxxx
3189642xx
596217834
xxx583691
xxx45x9x3
x8x1324xx
4x379xxx2
Thanks