I have been playing competitively a very long time. I never saw exclams on your first example for any of those moves of a Ruy Lopez.
I guess those exclams arose when the Ruy was in its early stages and people were just discovering what the best moves were. Otherwise opening books would contain tens of thousands or more of exclams.
In today's world, as in the past, when new twists are found in the opening, they will initially be rewarded with an exclam.
exclams and question marks bring attention to that move or sequence of moves as being critical. The important part is the thought process behind them.
and to a computer, what constitutes an exclam ? A move it would take 10 times as long to find than another ? For us humans, we appreciate subtle and cunning moves, which to a computer falls into a category of just ordinary or perhaps "bad" moves.
I am unsure of what exactly the correct use of "!" is. I know that it is at least supposed to be the best move, but nowadays it is common practice to only use it if the move is supposed to be hard to find or impressive looking as well.
However, it looks like in previous generations "!" was a much more common annotation to. I wonder if some long-time chess players can talk about whether or not this was the case.
For example, I will see annotations like this:
What about any of those moves warrants a "!". I see moves like Re1 and think "What else was white supposed to play?" But I have seen that very move marked with a "!".
Other times, I see situations like this:
How is playing a simple queen fork a "!" move? Rather, white's move should be marked "?" or "??"
Another thing I see is player's need to mark any sort of sacrifce, no matter how shallow, with "!" or "!!". For example:
I will see players mark a move like that with "!!" because they believe any move that involves a piece taking a protected piece of lesser value warrnts a "!" or "!!".
Another example is playing very simple:
YES, I know a queen is taking a protected knight. Does that move really warrant a "!!"? It seems like a rather elementary tactic.
And I know that grandmasters would find a lot of tactics simple that I would find "!", so I am not saying that there should be a strict scale. But I'm only talking about the most basic of tactics here
This isn't even a tactic, it's just playing a mate in 1 that your opponent hanged. Yet I see people annotate "!" simply for checkmates that either don't include a queen or are just especially clever looking.
So is there any sort of standard on this? It is of course my opinion that these are overused, but perhaps I am underusing them. Is there any sort of consensus on when it is appropriate to use "!" and when it is trite or patronizing to include it in a rather basic move?