C67 Ruy Lopez: Berlin Defense, I' Hermet Variation

There are no brilliant plans or very strong moves, but after all exchanges, White won the endgame.

What did the computer analysis give you?

In this variation Black trades a dynamic advantage (the bishop pair, more centralized king) for a static disadvantage (doubled pawns). If you don't use this advantage, for example by trading pieces, then in the endgame the pawn structure becomes very relevant because you cannot advance your majority.
In the game you showed, you decided to trade pieces at the cost of doubling also the White pawns on the f-file, but the difference is that his majority was not freezed and he did create a passed pawn in the end, while your majority never moved. Don't trade piece unless you are sure you stand better after the exchanges.

@Geeno what would you say are the most important concepts for playing the Berlin Defense as black?

@soni777 though to say, I am not an expert at all of chess, but in my experience strategy is more important than tactics (at least in the variations without Queens, like the one showed in the first post).

I think people overstate the importance of doubled pawns as a positional disadvantage in the general case. In some cases it can be a decided advantage; the situation must be judged on a game by game basis,

@xi_32_1 #2
Computer analysis showed that White's game is flawless. But the blacks were very mistaken when they agreed to exchange rooks.
@Geeno #3
Totally agree with you. But the transition to the best, or at least to an equal endgame, is a sign of skill. Black made a mistake when he agreed to the exchange of the rook, but he was faced with a difficult defense by human standards.
I will make only one amendment to your comment. White in this game is me. :-)
@soni777 #4
I came to the conclusion that black does not need to strive for total exchanges of pieces.
@Microraver
The problem that you asked exists, but I do not know the answer. In particular, in this game Stockfish also wants to take my knight and double the pawns.

Doubled pawns is a static disadvantage, but the bishop's pair is a static advantage: if it persists into the endgame the 2 bishops usually defeat a pair of other minor pieces.
Black was wrong allowing a pawn endgame: there the doubled pawns are a disadvantage.

@ujcn ouch, my bad, I thought you were black and asking for improvements :)

@Geeno #9
If I were in the place of blacks, I would, first of all, look into the book of openings. But even without a book it is clear that the movement is 10. ... Bd7 ?! not the best In addition, I love two bishops and try not to exchange a bishop for a knight.
P.S. But all these are general considerations. You can play in the opening, but go astray if you do not understand the peculiarities of the chess position. In particular, in connection with this variant of the Berlin defense, it is necessary to realize that after the inevitable exchanges and the liberation of kings for the movement to the center, the role of white pawns on the kingside increases. Black should prevent white pawns. I will give an example from my practice:

Black could have made a move g6-g5, to warn the movement f3-f4. But he did not do this and got into a worse position. He was supposed to lose, but was saved by a miracle.