Training no longer gives me puzzles near my rating.

Back somewhere around a year ago, I got in to doing puzzles here on lichess, and got a rating that peaked around 2500. As my rating improved it also consequently gave me higher rated puzzles. Even with the difficulty set on "normal," I was typically getting puzzles around a 2300-2500 rating.

A few days ago, I started doing puzzles again, and even with the difficulty set to "hard," I have only gotten puzzles in the range of 2000-2100. With the difficulty set to "normal," I was getting even lower rated puzzles. Why am I no longer getting higher rated puzzles? I have done a good 20-30 of them, and they still come in the range of 2000-2100. I would like to challenge myself more, and I know higher rated puzzles exist.

I have the same problem, rated around 2100 in tactical training, i only get 1900-1800 rated puzzles when i used to be presented only with 2100 or higher.

I don't know, perhaps it is somehow linked to the puzzle rating system?

This happened to me also.

I had 2200+ tactic-rating some hours ago , and on "normal" I got 1600-2000 puzzles..

And now (I have 2100 rating) the "hard" puzzles is 1800 rated :(

I think something got messed up during a recent update. I remember when I first came back to do puzzles 2 or 3 days ago, there was a message saying that Lichess was being updated. I remember that my first couple puzzles were properly around my rating, but then after my first couple puzzles, I started getting low rated puzzles. I think that may have been when the update went into affect.

Is anyone like Thibault seeing this thread who might be able to fix this problem? I know this might not be a top priority problem, but it would be nice if this was eventually fixed.

I was just about to open new thread, but guess this one is fine too.

Here is my observation:
For last week or something, number of "played times" increased tremendously! Normally it was 3000-4000 at peak per puzzle, but now I see some puzzles with 10k+ tries. It is OK, but wait - number of players didn't increase accordingly, so my lean knowledge of statistics tell me something went wrong. What could happen then?

1) Someone wrote an parser to look for difficult puzzles and solved them systematically via code (because I faced 10+ problems certainly higher than 2000pts with ~1700pts and high number of tries) - don't have proofs because of limited puzzle history

2) Somewhere in the world, very lonely group of chess players found lichess and started to solve puzzles, share on their forum and can't stop - "http://en.lichess.org/training/7041" - 15154 times!!

3) Maybe one of the online/offline educator included links to puzzles on lichess and his students are assaulting us? - Couldn't find any links to most odd puzzles, but maybe those pages are not allowed to be indexed by robots?

If one of these theories correct or even all, this explains why Stockfish can't find new puzzles for high rated players. As far as I understand, Stockfish crops puzzles from actual games, but doesn't evaluate them (gives middle pts like 1500) and leaves it to user interaction to determine its actual difficulty.

p.s. I love all kinds of conspiracy theory, but I would be happy if we could figure out what is going on, thank you :)

Availability of difficult problems is not the issue. I've still got 2300+ problems in my recents list, from a couple weeks ago, which are still 2300+.

to add more detail:
I thought i was adding to a thread I already commented on.

When set to "Hard", I've almost always had problems at least 100+ harder than my rating, but since Thursday or Friday, they've mostly been at least 100 points lower than my rating. I'm currently at about 2050.

Any update to this? As I've said before: The tactical trainer here on Lichess is the only thing that isn't top quality. It really does need some tweaking and additional features.