That d5 move is terrible for black.
And not many masters tried that bad move d5.
replying 0-0 is a mistake. a bad mistake.
white instead playing p-d4 won every game played by masters.
I would have played nxp in reply to d5 which wins at least a pawn.
In one of the master games he played that knight takes move, a move later, after d4 and then ...
3.Nd2 is more exact as it maintains flexibility over the c-pawn!
How that might be relevant becomes clearer when considering specific cases, for instance, as pointed out by fuxia, 3.Nd2 avoids the possibility of 3...g6.
More precisely, in view of the concrete 3...g6 option:
Nc3 blocks the c-pawn and allows black to comfortably aim for the solid ...
An opening repertoire for someone who has no time to study should not aim at getting an advantage, but aim instead to create situations in which you feel at home and in which your opponent will have difficulty taking you out of that "comfort zone"
As White the combination of d4 and Bf4 has been called the businessman's opening for just that reason. As Black ...
At that rating level, you’re better served by playing simple openings and concentrating on getting better at chess in general, so any opening, offbeat or mainline, that requires weeks or months of study is suboptimal.
Spend your chess study time learning chess tactics and endgames, spend enough time on the opening to understand what you should have played ...
As Akavall said correctly, it is the Damiano Defense, and is named after Pedro Damiano (1480–1544).
Since he answered the basic question about the name, I would not normally, but there is an additional part to the question, so I am going to add that 2...f6? is virtually a forced loss, no matter how you play it, and here is the analysis. So, no you cannot ...
The horsie is not sacrificed. If black takes it then he will regret it. The best is to lose the rook and have a bad position.
To answer the other half of your question
ke7 saves the rook but leads to a terrible position
after qxp+ black has to play kc7 then white moves b-d4+
its all downhill from there until white is mated
The opening you are after is Damiano Defense: 1.e5 e4 2.Nf3 f6.
Note that after 3. Nxf3 fe? is a mistake, 3...Qe7 keeps the material equal. There is no way to take the knight and save the rook as far as I know.
At 1500 openings are not your problem. Trying to play tactical slash and burn is a problem and a poor strategy for improving. You may like them but they are not the best approach. And when you play someone better they will skin your cat quickly.
Go for solid openings off the main lines that everybody plays. Use principles to guide your moves not ...
ICCF: Says nothing about it, or assistance of any kind, and you can even use computers legally. Here are their rules.
USCF: "3. You may consult chess books and periodicals but not other players." Here are their rules.
With regards to the ICCF rules, my guess is that they just decided it was too hard to police computer used, so they just allow it. ...
All correspondence chess always allowed written materials.
Now they may also allow computers, and AFAIK also do so as it would be impossible to know if someone was using one or not.
Many people now complain that CC is just one computer versus another.
I always suspected that Hans Berliner had used a computer when he worked at FSD in Gaithersburg ...
This answer does not use modern analysis.
One can always consult the old masters for advice.
One of the first epic rivalries in chess was between an Irishman and a Frenchman: Alexander McDonnell and Louis Charles Mahé de la Bourdonnais. In the course of their six-match slugfest in 1834, this opening line arose thrice, with de la Bourdonnais taking 2 points ...
While PhishMaster's answer is correct, we shouldn't forget about the importance of the d5 square. If it wasn't for its weakness, Black would play ...e5 every single time in the Sicilian. By playing Nxc6, we are allowing Black to get rid of the main downside of his position, while also reinforcing his presence in the center.
As pointed out by Akawall, 5. Nb5 ...
Is it best for me to stop and eat clock time figuring out why the wrong move is wrong?
No, you should learn before the match what the responses to deviations are. If you don't know why deviations are "wrong" and how to punish them, then you don't really know the opening.
First, I think that a lot of it is simply to get away from the heavier theory of other lines. Stockfish does not think highly of this move, and it does not make sense that such a move would be best from a purely theoretical standpoint. From a practical standpoint, that is another ball of wax since some of the positions get very messy. After all, who does not ...
A lot of opening play is about what you are trying to avoid. While sharp, black does quite well against 7.g4. In reality, the quieter lines seem to have much more venom if the figures in Mega 2020 are to believed.
In addition, with the move order you mention, white can get e4 in very early, or can play the Karpov line among other choices. The main line I am ...
Because it is a game and a contest/struggle. The opponent makes moves that are good for him not the moves in the favorite line you memorized.
Stop figuring out why his move is 'wrong' and figure out what your best move and plan is and then do that. Chances are that his move is quite good even if not the theoretical best.
You do not keep making your ...
Your assumption about it being favorable for white is flawed.
I end up in such positions because I do not like what would happen when I might deviate to avoid it. Nothing wrong with the Lange if black just plays 6...pd5
See comments by Seth Projnabrata above that pretty well summarizes the true situation.
First, it is important to know that in many Sicilian positions, not just the Kalashnikov, if black gets in d5, he has equalized, and has a very free game. Thus, taking on c6 helps black reinforce the center, and he will often get in d5 soon. White following up the trade with Bc4, which scores only 20% for white despite white out-rating black 2376 to 2192 per ...
With 9. dxc5, you are giving up your central pawn duo, taking on doubled pawns, fracturing your queenside pawn structure, etc. Obviously this is not ideal, and you would only do this if you get some kind of material compensation.
But you don't get any material compensation. After 9...Qa5, you can't simultaneously defend the c3- and c5-pawns. You'd be stuck ...
When you get more experience and appreciate positional play instead of just slash and burn tactics and material advantage then you would see that the move is terrible bad and has no advantages for white.
When the dust settles black will have the initiative and material will be even and white has a weak isolated pawn.
Nobody knows HOW important it is.
Statistically White seems to do better indicating that it gives white some advantage.
OTOH it is possible that when the game is solved it will show that moving first is not good as you committed yourself first allowing black to achieve a win.
That does not seem likely based on results so far, but it is still ...
Statistics show that with 2200+ players
Nf3 wins about 55.5% of the time
with draws = 1/2 and win = 1 , loss = 0
Na3 wins 68% of the time
But with 2400+ it goes to
at 2600+ nobody plays Na3
and Nf3 drops to 54% winning
9.dxc5? is a horrible positional blunder.
The Grunfeld for black allows white a big center, and his idea is to chip away at it, or force it to advance, and then chip away at it. That center controls a lot of nice squares, and is very desirable. 9.dxc5? by white voluntarily does what black is trying to achieve in a very bad way, and worse, it turns the Bg7 ...
it's actually impossible to keep the material advantage since after 9.dxc5 black has the move 9...Qa5 which puts a second attacker to the c3 pawn and also prepares to recapture the c5 pawn. All that white would be doing is giving up the strong center which is a huge deal in this line of the Grunfeld. Black, on the other hand, would be left with a more active ...
There is a huge difference here, and that is first, that you will get the bishop pair for white's big center, but also that your Bf6 is beautifully placed for they typical black move in the Queen's Indian, c5, which will cut across the a1-h8 diagonal. Also, the white center can be successfully attacked.
In the other example from the other question, cxd4 ...
You castle because there are NO other moves that are pressing.
You castle because you have a need to unite your rooks and/or put you king in a safer location.
You castle because it is the best move in that position.
You do not castle to put a check in some box on a list.
Your opponent has been putting his pieces on the best squares, not ...
The first moves 1. Nf3, 1. d4, 1. e4 and 1. c4 are all good. It is a matter of taste which one you prefer, as they usually lead to different types of position. All these moves have their advantages and disadvantages.
After 1. Nf3, you have to consider the black replies 1. ... d5, c5, Nf6 at least. 2. c4 is a fine continuation in all these cases. Of course, ...
Questions of this nature seem to have become a reoccurring theme recently here on chess SE, but that's a good thing because understanding basic opening ideas is understanding fundamentals of chess strategy. So let's tackle the question from this angle, in an attempt to objectively relate the merit of first moves for white to their popularity.
Why 1.e4, 1.d4,...
It is funny since 1.Nf3 scores better than any other opening move per Mega 2020 at 55.5% winning percentage for white, compared to only 52.8% for 1.e4, 54.3% for 1.d4, and 54.4% for 1.c4.
I think a lot of it is psychological regarding the types of positions that can arise. 1.Nf3 is the most fluid of all the moves I mentioned, and I think that players simply ...
At a basic level, what we want from an opening and a defense, is: we want to be fighting for the center squares (1), we're trying to develop our pieces and get good squares for them (2), and thirdly, we want to have a safe king (3). This is as modest a expectation as one can have for a good opening.
Now roughly speaking, there are two types of defenses (say ...
solidity (c6+e6 pawn structure is hard to break down)
h5 pawn can be weak in endgame.
White can have king safety issues if black castles kingside and plays b5 (black has king safety issues too there :) )
The main reasons it is OK for black is that he is still down only one tempo in piece development, but he has traded off his bad bishop for white's good bishop, and his position is still very solid so he will catch up in development eventually. The downside is that white has more space. Black can eventually fight back with c5 after finishing his development, ...
tl;dr: Wrong move order by black in the opening: the c4 advance must be prefaced with Nd7 in the played Zaitsev variation.
That said, and although your hunch about the early c4 is correct, I'm afraid there's no simple answer that immediately explains why the immediate c4 is bad and why Nd7 is so crucial, since the Ruy Lopez and the Zaitsev are highly ...
We can only imagine that he somehow had a human moment, and messed up.
The normal move instead of 16...c4 is 16...Nd7 17.Ra3 and only then 17...c4.
The way it was played, it was almost the forced loss of a pawn. He had the option of Qb6, but it left him with a miserable position anyway.
[FEN "r2qrbk1/1b3pp1/p2p1n1p/1ppP4/Pn2P3/5N1P/1P1N1PP1/RBBQR1K1 b - -...
You're rare. (Like me, as it happens; I would judge whether an opening book was worth purchasing by the ratio of text to moves -- the more text, the more likely I was to buy it.) Unfortunately for you, and me, most players would rather be spoon-fed lines to memorize than work on understanding, so that's where the money goes when it comes to opening books. ...
No, this was unequivocally not refuted. First, I would consider a line "refuted" if it led to a significant advantage, and there was nothing you could do about it...it is forced. That is definitely not the case.
For a very brief moment in time, this appeared to be slightly better for white, but black has since found plenty of resources with Na5, and it has ...
One way is to play through many, many games in your openings and see the ideas. Some opening books include many complete games. I do this on the rare occasion that I want to start using a new opening system as my primary opening.
You might be looking for two separate, but related types of books.
First, and I have an extensive library, I could find no books that do not organize the openings somewhat by sub-variation. The problem is that the ideas between various sub-variations of a specific opening, like the French, are just too different to lump into one chapter, so the answer to ...
In addition to the other answers, I want to point out that closing your Bishop's activity isn't important here:
Your bishop isn't active. Sure it's got an open diagonal, but it's not generating any threats. In the first position, you could play Bxf3 but then White would just recapture with the Queen and you've not achieved anything. In the second position, ...
There are multiple ways in which d5 could be useful here. The obvious answer is because it grabs grip on the e4 square. It also prepares the advance of the c pawn to c4 which will lock down white's LightSquared bishop. If you aren't comfortable keeping your bishop like this for portions of the middlegame then you can play h6 to force the knight back and ...
Other than controlling the e4-square (as noted by PhishMaster), there are some additional reasons ...d5 could be useful, which I'll list below. But even if these reasons didn't exist, ...d5 would still be best since controlling e4 is necessary.
1) It gives Black's queen more space.
2) It controls the c4-square, potentially stopping White from playing Nc4 (...
You do not have enough control of e4, and if white gets to play e4-e5 here, your king is a goner. It is an absolute must here to stop that plan, and the only way to do it is d5. Making your Bb7 bad for now pales in comparison to letting your king get mated, or loss of significant material, which will happen after e4-e5.
This is a very complex question.
First, by nature of moving first, white can clearly control whether the game is open, or not, more than black can, but black does have a say next. If white plays, 1. d4, 1. c4, 1. Nf3, or even moves like b3 or g3, we know that the game tends to be more closed than after 1.e4. After 1. d4, for example, black can attempt to ...
Of course you must be ready to play the Caro-Kann if you answer 1. d4 with 1. ... c6. But that is a sound opening - so why not, if you already play it against 1. e4? You will probably be better prepared for the Caro-Kann than your opponent, who after all started with 1. d4. If I was a d4 player, I surely would play 2. c4, hoping to enter the Slav.
In that ...