RubiChess
Just another UCI compliant chess engine. This started in 2016 as a private hobby project to practice programming in C++ and to see the engine improving compared to earlier releases. Meanwhile some years later RubiChess got pretty competitive and is listed in most of the rankings and plays a lot of even big tournaments.
License: GPL 3.0
CCRL Blitz Elo: 3582
CCRL 40/15 Elo: 3430
Current OSCET ranking position: 4