Help? Error in Modern Chess Openings (15th ed.) p.403 - Chess Forums - Chess .com

Hi there, I'm wondering if anyone can help me make sense of this page. Specifically, the issue is with the white moves (4.Bg5, 5.Bg5). My first instinct was that perhaps it should have been 5.e3 (as in the orthodox defence), but line 25 has 8.e3. I then thought that perhaps black plays 4h6 (in response

Modern Chess Openings - Chess Forums

Help? Error in Modern Chess Openings (15th ed.) p.403 - Chess Forums - Chess .com

Encyclopedia of Errors in Chess by Anatoliy Matsukevich

has been overloaded - Chess Forums

Do NOT Make This Chess Opening Mistake! - Remote Chess Academy

Openings Section Not Updating For Stats Page. - Chess Forums

Improve Your Chess: Common Thought Process Errors

Novice Level Blunders That Aren't Obvious Mistakes - Chess Forums - Chess. com

man/data/fdu-mtl/toys_games.task.train at master · ccsasuke/man · GitHub

Town Topics Newspaper, October 25, 2023 by Witherspoon Media Group - Issuu

No right-click functionality in game - Chess Forums

Exploiting Opening Errors 2 - Chess Lessons

I was reading 'Modern chess openings' and got stuck at the first chaptercould anyone help me read this table? : r/chess