a private chess engine  written in C/C++ by Felix Schmenger. Berta regularly plays online at the Internet Chess Club , and has participated at various online tournaments, such as CCT tournaments and ACCA World Computer Rapid Chess Championships, most recently the WCRCC 2018.
- CCT 10: Berta by Felix Schmenger has entered by Peter Skinner, CCC, December 26, 2007 » CCT10
- Re: 2017 ACCA WCRCC by Charles Roberson, CCC, June 17, 2017 » WCRCC 2017
- Berta disambiguation page from Wikipedia
- Bertha from Wikipedia, a female Germanic name, from Old High German berhta meaning "bright one"
- Perchta from Wikipedia
- Bertha disambiguation page from Wikipedia
- Big Bertha disambiguation page from Wikipedia