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In mid January 2023 I created an account on chess.com for the first time and in late January 2023 I started more seriously/regularly playing chess for the first time. Before that, i had certainly played chess in my life before and knew the very basic rules of the game of course (how the pieces move and that was about it, i didn't even know the openings etc.) but it was very rarely and casually (maybe like one match in like 5-10 years?) and i never got interested in chess before January 2023. My username on chess.com is Bmpz24. My Elo rating for my profile on chess.com isn't very high (only like 400-650)since I've only had 2 matches vs. human players so far (one when i had just joined in January 2023 and another one in April 2023). Even though I've practiced and played quite a lot vs. the strong and high rated chess.com engines/CPUs/bots but unfortunately you can't gain points by playing vs. engines (even if you kept winning all the time vs. the strongest bot). I got my first victory vs. an Expert engine on May 29th 2023 vs. "Engine 19 - Expert (2300)" (4 months after I started seriously/regularly playing chess) and also regularly watching lots of chess videos and tutorials on youtube. One of my favorite chess channels on youtube is "chess vibes". I think now (after several months of regularly playing chess) I'm done with chess at least for a while now. I never had plans trying to become a chess pro from the very beginning anyway, because to be honest my chances of becoming a Grandmaster are slim to none. Most Grandmasters start with chess before the age of 10. Chess is a hard and complex game at which it often takes years to excel.

However, since chess.com added the new feature in the game analysis after the match is over where you can see the actual elo rating of each player for that specific match, one can see that the explicitly declared elo rating of a certain engine (for example Engine 19 "Expert (2300)") and its actual elo rating played during that specific match aren't always the same. Sometimes the real elo rating for a specific match happens to be lower, sometimes even higher than the declared one. For example, the only reason Engine 19 - Expert (2300) was the first Expert engine that i beat was because, as i noticed in the analysis once the match was over, the engine's elo for that specific match wasn't really 2300 Expert but it was actually "only" 1900 Advanced and 77,3% accuracy while my rating for that match was 2050 Expert and 80,4% accuracy. Or engine 16 Expert (2000) (second expert engine i beat) was actually "only" (1650) [advanced] with 77,9% accuracy while my elo rating for that specific match was (2250) [expert] with 86,9% accuracy. On the other hand i've had some match vs. engine 13 "Advanced (1700)" where i couldn't win no matter what i did and I lost. Once that match was over i went through the analysis and noticed the real elo rating for that engine for that specific match was not "(1700) Advanced" but
it was actually "(2350) [Expert/Master]" with 88,x% accuracy! It was way higher than declared (650 above declared). I was like "no wonder I couldn't win". It's rather random. The highest rated engine (according to analysis) i won against so far was a 2000 (expert) and the highest rated engine i got a draw after the endgame against was a 2100 (expert) (unrecorded). I think the main reason for that is that ALL of chess.com's bots are adaptive (the stronger you play the stronger they play). Chess.com even states that "some" of their bots are adaptive. However i think that's only half the truth and they just wanna troll people!.. I'm sure all of their bots are programmed like that. In other words, the "declared" difficulty level is worthless. Itr can be pretty frustrating tbh.. If you wanted to play vs. a 2400 rated bot, you'd simply choose the engine 20 Master (2400). But if you choose a (1700) engine usually you want to play vs. a 1700 and are not expecting a 2400 rated bot... Some months ago i often played a lot vs. engine 13 advanced (1700) and i had won so many times vs. them. They always blundered so i had a chance of winning. Recently (after i had played vs. the higher stronger expert/Master bots for a long time (and probably gotten better) i tried playing vs. engine 13 (1700) again after a long time. I tried it for hours and i couldn't win a single time. They NEVER blundered! If that was actually really 1700 rated i'm 4000 rated!... NEVER!.. I was pretty frustrated. I'm 200% sure all of chess.com's bots are ADAPTIVE to one's strength! chess.com probably thinks it's funny and amusing to troll people like that but for me it was definitely neither funny nor amusing chess.com!!!... At best it achieved making me hate the game and lose fun and interest in the game. I had actually planned to record some more matches vs. some expert engines up to max. Engine 20 - Master (2400). But as long as chess.com don't fix those issues with the bots's declared difficulty levels, it's pointless.