Questions tagged [theory]

Theory commonly refers to the erudite study and the philosophy behind the moves in chess (like opening or endgame theory) but this tag can also be used for questions about the game theoretic study of the game itself.

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6
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2answers
1k views

High quality resource for Exchanged Slav defense?

I am preparing the Semi-Slav defense with David Vigorito-Play the Semi-Slav ( Quality Chess, 2008 ). The exchange line is covered well, but recently GMs try to steer clear from dull ...Bf5 lines and ...
6
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6answers
5k views

Does black really have a disadvantage?

Most people say chess is a draw, and it is quite believable, white is but a tempo up, and skill plays a lot of part in the game. But even the most skillful agree that blunders are made, in some games ...
-2
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3answers
386 views

Who is the winner between two powerful computer opponents?

If we suppose to have 2 powerful computer, that are able to calculate all moves in some seconds, who will win, the black or the white? Or the game will always be draw? (let say we have a unlimited ...
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4answers
2k views

Top sources for opening theory

Can anyone recommend any good sources such as periodicals, websites, or what not to stay up to date on the latest opening theory? I am willing to pay if the source requires such. How do the top ...
8
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2answers
2k views

Is there a refutation of the Muzio gambit?

Is there a 'refutation', i.e. a defense for black that leads to a guaranteed advantage assuming perfect play, against the Muzio gambit? [StartPly "11"] [FEN ""] 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5....
9
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1answer
635 views

Is this rook endgame won for white?

In Dvoretsky's Endgame Manual, 2nd Edition from 2006 the following important practical rook endgame with a distant passed pawn is analysed. The whole analysis (of the same position with white to move ...
6
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2answers
877 views

In the Delayed Open Catalan, after 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Ne5 c5 8. dxc5 Bxc5, which move should I play?

In the Delayed Open Catalan, after 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Ne5 c5 8. dxc5 Bxc5, we reach this position: [Title "White to move"] [fen "rnbq1rk1/pp3ppp/4pn3/...
5
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2answers
382 views

Is there a comprehensive coverage for Lasker variation of the Scandinavian defense?

Recently I was trying to improve Scandinavian defense in a way that I can reach "Viking" setup ( ...0-0-0 + ...Nc6 + ...Bg4 vs d4 ). I am trying out various move orders, and have stumbled upon one ...
23
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4answers
8k views

Playing the French Defense Exchange Variation

In the French Defense Advance Variation, 1. e4 e6 2. d4 d5 3. e5 ..., there are some clear game plans for both sides, areas where you want a pawn break, where you want to attack, etc. However, in the ...
3
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2answers
3k views

Has the King's Indian Defense been refuted at the Grandmaster level?

I know about b4 in the bayonet and the Kramnik-Kasparov games of course. I also know that Mr. Radjabov has been unhealthy (hope he gets better soon) lately. Thanks in advance, your site is awesome, ...
6
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2answers
735 views

Is 1. Nf3 Nf6 2. c4 e6 3. g3 b6 a QID even though White hasn't played d4 yet? What would you recommend me against it?

I first thought that starting with 1. Nf3 would avoid the QID. But after thinking about it, this is only true if White plays 1. Nf3 Nf6 2. c4 e6 3. Nc3 The move 3. Nc3 seems really cool since this ...
3
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3answers
437 views

Can Black reach full equality in this game?

I have played this game as Black against computer( difficulty was set to HARD ). I was trying to test Alatortsev line I found in ECO D, 1987 that claimed Black was equal: [Title "Taken from ECO D ( ...
4
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2answers
391 views

Did Aronian make a mistake in the opening against Anand in round 1 of the FIDE Candidates 2014?

Here is the game [Event "FIDE Candidates 2014"] [Site "Khanty-Mansiysk RUS"] [Date "2014.03.13"] [Round "1.3"] [White "Anand, Viswanathan"] [Black "Aronian, Levon"] [Result "1-0"] [WhiteElo "2770"] [...
5
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5answers
2k views

What are the first moves chosen (White), by brute force chess engines?

Title says it all. Feel free to add comment, theory, or explanation. Just to clarify, this is only regarding turn 1 of White, and no proceeding turns after it.
9
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3answers
977 views

How did I still lose with 1 piece advantage?

Throughout the game, I thought I had a positional and piece advantage, but I STILL LOST! What did I do wrong? (using Ruy Lopez btw) [FEN ""] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 a6 5. Bxc6 ...
6
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2answers
5k views

How should I play the Old Benoni Defense as both White and Black?

[FEN ""] 1. d4 c5 2. d5 A lot of people play it against me as black, and I am also interested in it for both sides. What are some of the main lines? Also, what are some of the key positions and ...
5
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1answer
256 views

Kramnik - Karjakin in the FIDE Candidates 2014, was 8…f5 correct?

In the game between Kramnik and Karjakin shown below, the opening was a bit strange and the resulting position was odd. I am wondering, was 8...f5 correct? Was it a novelty of sorts or when did the ...
7
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2answers
2k views

How to test the quality of an opening book?

Over the years I manually maintained an opening repertoire in a PGN file (with several "games" per ECO index on average), and now realized I can generate different opening "books" from it - for SCID, ...
5
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1answer
1k views

Pawn structure in king's indian or grünfeld

I'm trying out kings indian against d4 openings but there is one problem... I get mated. I can't defend after castling under the h7 g6 f7 pawn structure. Somehow it works as an opening with an ...
2
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3answers
345 views

Existence Flanking against Center Control

as I learnt at School of Chess, there are 7 different school with unique 'accentuation', Philidor, believed that maintaining the mobility of pawns was the most important strategic factor of chess ...
8
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3answers
625 views

Scotch gambit: 4… f6

[fen ""] 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 f6 How should I play from here? This move seems to head off the main ideas of my kingside attack; what is the best way to proceed with the plan of ...
2
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4answers
549 views

Push e and d pawns in semi open openings

I recently met the French defence as white which turned into the advanced version. In short, I got crushed in a humiliating way, kicked while lying and spat on. So now I am reforming and ...
11
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2answers
13k views

What are the main ideas and goals in the Queen's Indian Defense?

There's no real surprise when it comes to the strategy for the King's Indian Defence: storm white's king side, maybe sac a few things, and mate (ideally). But what does a practitioner of the QID hope ...
5
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6answers
739 views

Do any openings result in a lost game for black?

Based on this comment I'd like to know which openings, if any, are considered unplayable (i.e. lost) for black? My own understanding is that in some opening lines it's harder for black to equalise, ...
4
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2answers
4k views

What are the key ideas for white in the Keres Attack (Sicilian Scheveningen)?

The Keres Attack (Sicilian Scheveningen) has the following starting position [FEN ""] [White "Keres Attack"] [Black "Sicilian Scheveningen"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g4 ...
5
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2answers
231 views

Why does Black play 10…a6 in the A39 variation of the English opening?

I observed that after [fen ""] 1.c4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.g3 Bg7 7.Bg2 O-O 8.O-O Nxd4 9.Qxd4 d6 10.Qd3 In many games, Black played the strange move 10...a6!? It has been ...
4
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2answers
948 views

Queen's Gambit Accepted with 3. Nf3

According to wikipedia in the main line of the Queen's Gambit Accepted White's 3rd move is: 3.Nf3: [FEN ""] 1. d4 d5 2. c4 dxc4 3. Nf3 Doesn't that pretty much turn the opening into a real gambit? ...
5
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2answers
2k views

How good is 1. e4 e5 2. Qh5 Nf6?

When I play online blitz, playing black, I usually answer 1. e4 e5 2. Qh5 with 2... Nf6!? 3.Qxe5 Be7. [FEN ""] 1. e4 e5 2. Qh5 Nf6 3.Qxe5 Be7 White often collapses quickly due to lack of development ...
3
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1answer
358 views

French :: exchange variation - but not quite

I had the following in a game [FEN ""] 1. e4 e6 2. Nf3 d5 expecting White to follow with Nc3 leading to the Two Knight's Variation of the French Instead, the game continuing with: [FEN ""] 1. ...
6
votes
2answers
570 views

How should black develop the dark squared bishop in the advance variation of the French Defense?

The following is the French defence, advance variation: [FEN ""] 1. e4 e6 2. d4 d5 3. e5 * My question is how Black should play his King's Bishop. Any time that Bishop moves the White Queen can go ...
23
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3answers
2k views

What are white's plans in this Scotch Gambit position?

I'll skip the long explanation, but it's not uncommon for me to reach the following position as White out of the opening: [FEN ""] 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bb4+ 5.c3 dxc3 6.O-O cxb2 Bxb2 (...
6
votes
4answers
996 views

Randomness in Chess?

I have had periods in my life when I became quite engaged in Chess. I am also a card player - particularly Bridge and Two Handed Pinochle (old game, not very popular these days). Oftentimes I get ...
9
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2answers
866 views

How should one continue development against an unorthodox move by an opponent?

Let's say you have been practicing a certain opening such as the Ruy Lopez and you have all the main lines down and suddenly your opponent makes some unorthodox move that you did not encounter while ...
7
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3answers
2k views

Centre pawn vs. side pawn?

Chess theory suggests that pawns whose file is nearer to the central files are more powerful. This is somewhat obvious for the rook's pawn, which can attack only one square as opposed to the other ...
14
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5answers
1k views

What is the highest known lower bound for mate in N from starting position?

Edit: It seems my question was not clear enough. Let me rephrase: What is the largest N for which we can knowingly say "chess, from the starting position, is not a forced mate in N moves"? Chess is ...
7
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1answer
233 views

Which sites offer good tutorials for novices to improve?

Can anyone recommend sites that they have personally had experience with to be good for learning by novices? I play chess regularly, but I have never studied theory and while I am doing fairly well ...
4
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2answers
688 views

Statistics on how a rating or winning percentage corresponds to the (opening, middle, end) game?

Have their been any statistics on how your knowledge on part of the game (opening, middle, end) corresponds to your rating or winning percentage? For example, I have found that if I play opening ...
8
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1answer
2k views

When and why should I move the pawns in front of a castled/non-castled King?

I have always struggled with this and I believe there is some rule that someone defined at some point, but I am not sure who (Maybe it was Steinitz). When and why should I move my pawns in front of ...
10
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2answers
296 views

Practical study for a former player?

I played quite often in the mid 80's to mid 90's. My highest rating OTB was low 1300's (Edited, I had thought I reached 1415, but not according to USCF site-although that doesn't include my high ...

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