This is what I don't understand about puzzle rush

This is an easy puzzle. I get that. But it has a 4.2% pass rate with 644 attempts. It is also only rated at 800. That doesn't make any sense at all. A true 800 rated puzzle I would think would have a much higher pass rate. Most puzzles seem to have a pass rate of around 50% which makes sense. 

Either this is a new puzzle and its rating hasn't leveled out yet (I'm not sure what 644 attempts would be considered in this type of thing), or the algorithm that determines the rating needs to be modified to increase the rating until it levels out to a reasonable pass rate. 

There shouldn't be any problem making at least the 800 puzzles all have a decent pass rate in my opinion. Maybe I'm thinking about this all wrong but it seems really ridiculous.

On a side note I've noticed that the program seems to load a group of 3 or so puzzles at a time with the same theme quite often. I'm also super crazy...

I agree it's not an 800 puzzle. https://www.chess.com/tactics/489348/practice?autostart=1

Did you report it? There's a link to report problems.

If only 4.2% get a problem, the rating should be moving higher. 644 attempts means it is a new problem.

This puzzle definitely needs to be rated higher than 800. I'm rated 2100 on tactics trainer and this puzzle took me almost 2 minutes to solve. I'd rate this puzzle somewhere between 1500-1700.

Should I report it or will the rating level out on its own over time?

It also might have an entry rating of 800 and has to have a certain amount of attempts before a rating is assigned kind of like a provisional rating but for puzzles. The possibilities are endless.

I agree. There's no way I would make that in puzzle rush, where I make a guess if I have to use more than 30 seconds and I am around 2200 in tactics rating. I would need at least a couple of minutes for this one.

Normally this would indicate a puzzle with a few obvious moves which people play quickly but a tough final move. This is the opposite so no idea why it’s got this rating.

1...Bd1 threatens Qe2+, so Nc4 apparently is the best move while I can play dxc4 next. A simply tricky puzzle. I mean to be honest, ratings do matter at some point, but they cannot reflect everything accurately. Try to focus on more of quality of play. I however agree with you that this could be some suspicious error. I agree with @Deranged and you, this probably is a 1500-1700ish level tactic puzzle. Sometimes when it comes to tactics, making small threats like moving your bishop only one square looks noobish and silly, but it can be an excellent move. It takes confidence to get good at tactics XP.

I have never figured out how puzzles are rated on this site. However, overall, my ratings here and at chess tempo are quite close.

I don't think the ratings are adjusting the way they are supposed to. The number of attempts is now up to 651 and the rating is still 800.  

Yeah, it took me over 2 mins to get this puzzle solved. From what others said, probably a new puzzle. How about you, was the puzzle a little tricky?

There is just too much going on in this puzzle for it to be so low rated. I see the knights are loose immediately and I can’t find a way to threaten the rook, so Bd1 makes sense but I can drive myself crazy with the possible follow up of 2.Qe7 and seeing all the other ones. Like others said, it isn’t immediately obvious and your having to calculate above 800 level in my opinion. 2.Qe7 Qe2+ 3.Kg3 Qxe1+ 4.Kf4 Rf8 is what I seen and had to waste all my time on making sure that I wasn’t getting mated. I don’t think an 800 could see that personally, or if it is even correct. I have confidence in the line but that gets ripped to shreads by a computer all the time. I’ll look at a computer later...

I kind of convinced myself that this puzzle still has a provisional rating.

I am rated 2600 in puzzles, and this puzzle took me 2 minutes!!

NO 800

Around 1700

I’m rated around 1700 on puzzles on this site (I haven’t been doing them here recently, I have other preferences. I’m stronger than that now probably)

I would guess this puzzle is rated anywhere from 1600-1800. 

Give it a provisional rating of 1800 and see where it falls is my idea. People are going to be playing fast on puzzle rush so it needs to be higher rated than what you would think, in my opinion.

For me it’s over 2,000. Quiet moves are harder to see. 1,700/1,800 puzzles are normally just calculation.

Another example

Rated 800 with a 7.3% pass rate at 982 attempts. I don't have as much of a problem with this one as the other one since it seems easy enough and not terribly complicated. 19.Nc6 isn't a quiet move. Probably still over 800 though in my opinion. I would guess 1000 - 1100 or so. The reason this has a low pass rate is because of the bishop being up for grabs probably.

The main point of this example is to support my idea that 800 is a provisional rating. I wonder if it will change at the 1,000 attempt threshold. This one is pretty close to that mark too.

Stupid puzzle rush let's solve normal puzzles

My puzzle rating is 3300 I solved it in 5 sec but very not 800 elo