This year (2020) it's 40 years ago I started chess programming, from REBEL 1.0 -> REBEL 12 and after my retirement from the competition (2003) the free versions ProDeo 1.0 -> ProDeo 2.9, the 2.2 version (2016) being the last serious engine update whereafter development stopped.
Inspiration returned, an afterthought version after all, Benjamin (the last-born of Jacob's 12 sons) is the Gambit version of ProDeo hardly without loss of strength. Living in the age of the almighty Stockfish, Leela (and friends) improving playing style is a nice new challenge. Examples of Benjamin, first some cherry picked positions Benjamin is superior to the new Stockfish 11.
The Gambit algorithm is controlled by a parameter in the benjamin.eng script file in the personal folder.
[Gambit = 120]
The paramter is extremely sensitive to changes, the default setting is 120, increasing or decreasing it with a value of 10 may already have big consequences to its playing style. For instance, a value of 25 will change Benjamin into a boring and weaker engine, a value of 200 may cause Benjamin to play unsound moves (c.q. sacrifices).