How should I configure Stockfish if I want it to play as a 2800 ELO player without the UCI_LimitStrength value? Stockfish has so many parameters that I'm not sure which one I should change so that it has a strength equivalent to that of a human who has 2800 ELO, well that's one of my wishes, the other is to be able to play against Stockfish at its maximum potential (3600 ELO), it is clear that I will lose but I don't care, I just want to play, the specifications of my PC are as follows:
-4GB RAM
-CPU 4Cores/4Threads
-Only HDD
I have been testing with the Skill Level parameter however I am not sure if that is enough as I am not a very strong player to know if Stockfish is playing better than a GM.
So couple of issues off the cuff;
Do you have a particular version in mind?
Chess engines don't exactly have &quot;ELOs&quot;. Chess engines are about calculation speed, calculation depth. They guestimate (at best) to determine a theoretical strength then measure against  other engines.
Stockfish 9 with 4 Cores is ~ 3200 &quot;ELO&quot;
Stockfish 12 similar rig I would argue is around that 3400-3600 &quot;ELO&quot; Mark.
The Reality; Playing solely against engines, at the highest level is ill advised for any development and engines are best used for position analysis (if that).