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A feature maybe helpful in puzzles

https://imgur.com/ddVtJ0b

In picture you see
Puzzle #GXkK
Rating 2277
Played 686
.....
Maybe adding percentage of success & failure would be great.
Also first common blunder move would be great.
Thank you.
Average time spent on whole puzzles by a player.
Average time spent on a particular puzzle regarding community.
These are good ideas, especially success percentage! I'm going to submit this as a feature request.
Regarding success percentage - here is feedback from kratus: "Given that the puzzles already have a rating, all but the ones at one end of the spectrum will have a win rate that is asymptotic to 50%."

The chess rating of the puzzle is dynamically adjusted in response to attempts as opposed to being set in stone by stockfish or human creators. In broad strokes, I think you can assume that 50% of users with puzzle rating equivalent to that of the puzzle would have success on it.
Regarding first common blunder move.. Though it would be fascinating (to me anyways), might not be compelling enough to justify extending the data model.

I assume you're talking about puzzle storm for the average time stuff. For untimed puzzles, showing the average community time spent would be skewed and untrustworthy. For example, if users start a puzzle and then get distracted by another tab/app, comes back to it a few hour later and finishes it..

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