I really, really, really struggled with this puzzle. Not only could I not solve it, I could only identify the numbers in 2 cells, I3 and I4. Try as I might, I couldn’t make any further inroads. I must have spent well over an hour today struggling with this puzzle, probably more like 3 or 4 hours, but who’s counting?

I’d welcome any insights from those of you who’ve solved it. How did you approach the puzzle and how did you get your hooks into it? I find I tend to struggle with Killer sudokus far more than I do with other puzzles and I’m struggling to understand why this is the case. Any insights anyone can provide would be extremely welcome and very much appreciated.

Thanks
Paul

Just realised that this puzzle can still be submitted today, so I’m not looking for any hints until tomorrow. Maybe if I have a fresh look at it later today, I’ll figure out how to solve it.

I found today’s Killer relatively straightforward, so maybe I was just having a bad day yesterday. I’ll have another go at yesterday’s puzzle later today.

The Friday Killer Sudoku is supposed to be the most difficult one of the week,
but yes, yesterday's does seem a step up than what is usual on a Friday

I’m surprised to see that it’s already been solved 240 times, which is not that far off the average number of solvers over the previous 4 Fridays. I must have some kind of a blind spot, but hopefully I’ll manage to get my head around it.

Solved it! Once I managed to get started, it was tricky but not impossible.

Not wanting to include spoilers for those who haven’t done it yet, I will say that I managed to sort out a few of the cells in the 3 columns on the right hand side of the puzzle and this gave me the start I needed to work through it.

It has taken me probably 5 yrs of doing difficult KSs to feel comfortable with them.

The last two years it has been far easier for me to do KSs than when I first started. For me, lots of practice has made a difference. I know you have done all the books, but for others, solving the two KS books makes a difference in your ability do to the puzzles.

Like you, I sorted out columns on the right hand side.

After eliminating as many possibilities as I could analytically, I noticed that cells C4, D1, and F7 were affected each other, and only had two possibilities. That was where I started with trial & error.