lichess.org
Donate

chess exercises and scoring

I think that whoever created the chess quiz has no idea what the correct evaluation of the moves is.
There are difficult quizzes to which if you miss the solution you are subtracted 19-20 points. Then there are quizzes that if you solve it you have 3-4-5 points. It does not make sense. Pass the desire to solve the exercises.
The puzzle ratings are algorithmically derived by the users' wins and losses. I assume that it uses exactly the same algorithm as is used for our play ratings, treating the puzzle like a player. The plus or minus to your puzzle rating is a function of both your and the puzzle's rating.

Based on my experience, at puzzle ratings above low- to mid-1700s, losses tend to hurt far more than wins help, so one loss often requires multiple wins to offset it.
It is treated like a player using glicko-2. If users fail a puzzle it gains rating. If users manage to solve it, it loses rating. How much you lose/gain per puzzle depends on its rating.
@lovlas I am curious how the algorithm decides the difficulty of puzzles I get. Sometimes I get streaks of around 12 easy puzzles in row all rated between 1500 and 1700 and win them all. Sometimes I get streaks of 12 puzzles in row all rated 2000 plus and I fail them all.
Ok thanks. Can I set target rating range when I solve puzzles? I mean similar to games seeks, where I can set rating range of players who can accept my seek.

This topic has been archived and can no longer be replied to.