It was probably unfair to say it was easy, but it is certainly much easier than the usual Friday difficult killer. Now that it is not worth points I can show the only step that I thought required some experience with solving killer sudoku puzzles. Usually solving a difficult killer sudoku involves a certain amount of complicated analysis involving referring to multiple cells or cages, but the 7/8 puzzle did not require doing that at all. I think it is the techniques required in solving the puzzle that make it easy or difficult, it is not just about being solvable.

Below are 2 images showing the only step in solving the puzzle that I would say was not relatively easy.

Here we can add cages in the top left box: a1(19), c1(19) & b2(6) = 44, this means a3+c3= 7 or 9 (a3+c3=d1+1). Note that there is 1 cell included outside of the box, and 2 cells not included that are inside the box, and that is why I would say it is a little more difficult than the usual adding up cages within a box.



Now we can dismiss 7 in c3, and by referring to cell i3(1,6) we know that a3 & c3 can not be 1 & 6, this leaves 1 & 8 as the only 2 remaining values that add up to 7 or 9, and because we added the cages we know that if a3+c3=9 then d1=8.



Everything else is relatively straight forward there is some more adding of cages to do, but nothing complicated.

I found today's (14/8) killer sudoku more difficult than the previous 2 Friday killers. It took me longer to complete, but I did miss something that I think would have made a big difference if I had spotted it sooner. I will have another look at the puzzle later and see how much that would have helped.