Sherwood, Russell Wednesday, June 16, 2021
A setting seen on most chess engines is "Contempt".
This is a slightly misnamed parameter used by the engine to improve its winning chances against weaker engines.
What this does is to assume that the opposing engine is slightly less likely to find the "best move".
The majority of engines come with a setting of around 20.
The consensus is that this should be set to zero for Correspondence Chess, although there are some scenarios where different settings can be advantageous!
Updated Wednesday, June 16, 2021 by Russell Sherwood