Highest rated puzzle?

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albacored

I spent a while looking for this topic, but couldn't find a recent one so here goes: what's the highest rated puzzle you've seen on this site in the tactics trainer? Recently had a 3800 rated puzzle which was well above anything else I'd seen. It's a new puzzle though so the rating may fluctuate depending on future pass rates.

Nikolaifedotov

MrMack1111

Following. Curious about same thing. Not the easiest site to search for info

albacored

4000 is the highest I've seen since I wrote the initial post.