so my friend ( previous 1800) gets put to 1750 but me (3100) gets put to 1500? why did he get -100 and I get - 1500? BS punishing players for actually committing to a practice.
Thanks chess.com now I don't care about premium and I don't want to use your website for making me feel like 50 hours was worth nothing.
Mine went from over 3300 to just over 2200. I don't think a huge rating drop for puzzles should have any impact on the benefit of practicing. I would do the puzzles if my rating were 3300, 2300, or 1300. In my opinion the change makes sense, although it surprised me because I didn't know they were going to do it. The puzzles I get right can't be anywhere near 3300 because I'm only about a 1700 level player. The 2200 puzzle rating I now have is probably a lot more accurate.
the lichess algorithm works differently
That's certainly possible.