From TalkChess
NEW, 14 Feb 23: Solista Universal v1.6. + v1.6 extreme.CTG, ChessBase-Format (2 books in the package):
https://solistachess.jimdosite.com/books/
Solista Universal extreme.CTG:
Here are two books in one package (normal and extreme). This book is maximum fun. It plays all known openings, including gambits. But don't worry: all variants have been tested in engine tournament practice. The extreme book also plays very rare lines like 1.g4, 1.b4, 1.e4c5 b4, 1.d4Nf6 c4e5 ...and many more. In the case of moves such as 1.c3 or d3 or e3, a change of move is often attempted on the server, e.g.: 1.e3 e5 2. e4 --> you are playing with swapped colors. That's why I have such moves with a !? provided, which means that these moves are only played if the checkmark under "Tournament book" is deactivated. Otherwise, almost everything comes into play.