[JohnW]

Willow,

Are these puzzles supposed to be solved by deduction alone? I got so far with deduction, but then had to take a chance and make a guess on a couple of numbers. I think there were 6 & 4 in a 'nine' square that I found impossible to determine which, of two, they went in, even though they were the last two numbers in a square of nine. The first time it didn't work out so I swapped them around. It thus became a trial and error type solution for a while. Is that how it is supposed to be? I found the best way was to set up a spreadsheet in excel and any time I inputed trial and error numbers I did them in a different colour so I would know they were debatable.