In the '80s I owned a really good book on the Petroff I liked, which explained some of the ideas as well as the moves, in all the main variations. It was an older book with a soft brown cover, but I can't think of the name or author. It wasn't "The Petroff Defense" by Hagg and Forintos, though that one looks similar. I know my info is not of much help, except if somebody spots such a book online I can probably tell you if that's the one I had that I liked, and at least you know that at least one really good book on the Petroff is out there.
The Petroff Defence. Your Thoughts.

3..d6 is passive that's why it's not played as often, but you see it all the time by low rated club players
So my extremely low rating is why I enjoy playing Petroff's so much — I've always wondered.
I play this defense because I enjoy the living blazes out of it. From the first time I saw it in Modern Chess Openings in 1978, I had an affinty for it. I find it fun!
Is it drawish? Sure! Luckily, at my level, draws are rare as women who find me charming.
So I'm going to keep playing it and having fun — at least until I check out the Berlin thing.
Regards,
Lou
Karpov wrote a book on it: Winning With the Petroff back in 1993.
Karpov wrote quite a few books, which he never wrote...
This one is probably written by Karpov himself, though.
There are several Petroff books out there- my personal preference is Sakaev's, which is not a heavyweight, and has the extra bonus that it's a complete system against 1.e4.
Thanks. Anything similar that is a complete system against 1.d4 etc.?