I’d like to ask the good people of this community that, if you do know the solution or figure it out, that you not share the answer here. Feel free to announce your success, but there’s something to be said for discovering the answer completely unaided, even if it takes years.
It’s embarrassingly obvious once you see it though.
Took me about 20 minutes. There’s a rule you find first that would work if the 7 was an 8. But it isn’t. So there’s another rule.
Damn haha
until I read your comment I was puzzled as to why anyone would consider something so straightforward a “masterpiece”, but yeah, it’s quite a clever piece of misleading on the puzzle-setter’s part.
I’m sute Matt Parker has made a video about this.