Best 1st book for an intermediate player?

You might check out "My System" by Aron Nimzowitsch......otherwise you might find something of interest in these lists...

Good Chess Books for Beginners and Beyond...

https://www.chess.com/blog/RussBell/good-chess-books-for-beginners-and-beyond

Good Positional Chess, Planning & Strategy Books for Beginners and Beyond...

https://www.chess.com/blog/RussBell/introduction-to-positional-chess-planning-strategy

rico try How To Reassess Your Chess by Jeremy Silman if you haven't already

I’ll have to look into that one to

Yes try that one, or 100 Endgames You Must Know, depending on whether you need to improve your positional play or endgames.

Well, I think that Amazon.com brings a lot of books.

I think that they also delivery to your country.

https://www.amazon.com.br/s?k=chess&__mk_pt_BR=ÅMÅŽÕÑ&crid=3EC6MSNO6JYXB&sprefix=chess%2Caps%2C215&ref=nb_sb_noss_1

rico try How To Reassess Your Chess by Jeremy Silman if you haven't already

It's amazing how far and how quickly you have come without reading a chess book.

The first book that came to my mind when I saw your question was Nimzowitsch's My System: https://www.chess.com/forum/view/game-analysis/illustrative-games-from-my-system

The book has its pros and cons. Nimzowitsch was clearly a genius. He was also very eccentric and has a wordy and weird way of explaining things. The games he played stand the test of time really well. They typically get CAPS scores of around 97%.

My favorite book that is above beginner level is The Mammoth Book of the World's Greatest Chess Games. You could easily spend 100+ hours in front of this book and your chess board and still keep learning new things. I heard there is a new edition with an extra 20 games, so that is 145 of the best Grandmaster games. See my thread on it here:

https://www.chess.com/forum/view/game-analysis/worlds-greatest-chess-games

Do check out my thread on Logical Chess at https://www.chess.com/forum/view/game-analysis/logical-chess-move-by-move-1

Studying Paul Morphy is good for learning attacking chess which follows the classical opening principles. There are several different authors who have written about him. I have been reading the one by Valeri Biem. The good thing about that book is it is written by a very strong Grandmaster and he never lets a mistake by either player pass without commenting on it. I've written up some of the games featured in the book here:

https://www.chess.com/forum/view/game-analysis/paul-morphys-greatest-games-63696577

The book provides some more detail on the games. Some more modern and high quality game anthology books are written by Colin Crouch, Neil McDonald, Dan Heisman and John Nunn.

The first couple of games from DH's book are written about here:

https://www.chess.com/forum/view/game-analysis/the-worlds-most-instructive-amateur-game-book

I have tried out a few different books on Dan Heisman's list and I always found myself agreeing with his advice and recommendations

https://www.danheisman.com/recommended-books.html

Note that Silman's The Amateur's Mind is recommended at the intermediate player and Reassess Your Chess is considered to be a more advanced book.

There is a Silman Simplified series by NM Jesse Cohen which explains some of the key ideas of Jeremy Silman: https://www.youtube.com/watch?v=XeSLI1Y-ZNE

So there isn't one single book that is clearly best, but there are several good options.

It is a really good book

It's amazing how far and how quickly you have come without reading a chess book.

The first book that came to my mind when I saw your question was Nimzowitsch's My System: https://www.chess.com/forum/view/game-analysis/illustrative-games-from-my-system

The book has its pros and cons. Nimzowitsch was clearly a genius. He was also very eccentric and has a wordy and weird way of explaining things. The games he played stand the test of time really well. They typically get CAPS scores of around 97%.

My favorite book that is above beginner level is The Mammoth Book of the World's Greatest Chess Games. You could easily spend 100+ hours in front of this book and your chess board and still keep learning new things. I heard there is a new edition with an extra 20 games, so that is 145 of the best Grandmaster games. See my thread on it here:

https://www.chess.com/forum/view/game-analysis/worlds-greatest-chess-games

Do check out my thread on Logical Chess at https://www.chess.com/forum/view/game-analysis/logical-chess-move-by-move-1

Studying Paul Morphy is good for learning attacking chess which follows the classical opening principles. There are several different authors who have written about him. I have been reading the one by Valeri Biem. The good thing about that book is it is written by a very strong Grandmaster and he never lets a mistake by either player pass without commenting on it. I've written up some of the games featured in the book here:

https://www.chess.com/forum/view/game-analysis/paul-morphys-greatest-games-63696577

The book provides some more detail on the games. Some more modern and high quality game anthology books are written by Colin Crouch, Neil McDonald, Dan Heisman and John Nunn.

The first couple of games from DH's book are written about here:

https://www.chess.com/forum/view/game-analysis/the-worlds-most-instructive-amateur-game-book

I have tried out a few different books on Dan Heisman's list and I always found myself agreeing with his advice and recommendations

https://www.danheisman.com/recommended-books.html

Note that Silman's The Amateur's Mind is recommended at the intermediate player and Reassess Your Chess is considered to be a more advanced book.

There is a Silman Simplified series by NM Jesse Cohen which explains some of the key ideas of Jeremy Silman: https://www.youtube.com/watch?v=XeSLI1Y-ZNE

So there isn't one single book that is clearly best, but there are several good options.

In my opinion my system is quite overrated, and I rwmber someone from the dogochess saying the dame

In my opinion my system is quite overrated, and I rwmber someone from the dogochess saying the dame

Nigel Short has said that, actually he said that it should be banned .

rico try How To Reassess Your Chess by Jeremy Silman if you haven't already