Questions tagged [analysis]

Questions relating to the objective assessment of a position. The assessment may entail which side has the advantage, or what the best move might be.

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4
votes
3answers
151 views

Potential exchange sacrifice in a King's Indian Defence middlegame

[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Be3 f5 11. f3 f4 12. Bf2 g5 13. b4 Nf6 ...
5
votes
3answers
8k views

Average centipawn loss

I had no incurracies,blunders or mistakes then also my centipawn loss was 48. What is the problem here or I have misunderstood average centipawn loss. You can have a look at that game at lichess. ...
1
vote
1answer
195 views

What move did I miss?

I played b4. According to computer, it is a "missed win" move by me. But what move did I miss? What move should I have played? (I am white. And played b4 but I got "missed win")
4
votes
2answers
580 views

Why is 6. Nge2 better, and 7. d5 a necessary push in this game?

I have two questions about a recent game that I played on Lichess. Question 1: Why is it necessary for White to push d5 now in the game, in this position, and why is Be3 a blunder? I did play d5 ...
-1
votes
3answers
256 views

How is the threat Qxh7 relevant here?

According to chess.com, "White threatens both Qxh7 and Qxf8 checkmate-Black cannot defend against both threats." Would the threat the white Queen has towards h7 be enough to have a checkmate? How is ...
3
votes
1answer
433 views

Why can Stockfish give different evaluations at the same depth?

When I let Stockfish get to a certain depth (say depth 33), it gives some evaluation. Then I refresh the position (while leaving Stockfish on) and when it gets to the same depth it gives a different ...
7
votes
2answers
240 views

First known computer-found error in expert chess analysis

What is the first known example of published expert chess analysis that was disproven by a computer search, with the winning player completely opposite? That is to say, a widely known published ...
4
votes
1answer
152 views

The move Bg4 in the Pirc defense

I am having trouble understanding a move studied in an opening book. The move is Bg4 in the Pirc defence in this position. What is the point of aiming to exchange the bishop on f3? The point d4 does ...
13
votes
8answers
5k views

Chess software to analyze games

My son is into chess and plays chess tournaments. I would like to know what good chess software is available to analyze his games. The software should analyze move-by-move and should point out weak/...
0
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2answers
138 views

Guarding my seventh rank and a king walk assualt

A few weeks ago I won a game as Black on Lichess. [FEN ""] [startply "48"] 1. e4 c5 2. Nf3 d5 3. Bd3 c4 4. Be2 e6 5. d4 cxd3 6. Qxd3 Nc6 7. exd5 Qxd5 8. a3 Nf6 9. c4 Qxd3 10. Bxd3 Bc5 11. O-O O-O 12....
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2answers
173 views

Weakening the kingside with g5

I am having trouble deciding whether a move such like g5 (g4 in case it is White) is worth it or not. I am looking for advice on my particular position and if possible, a general explanation for any ...
3
votes
1answer
311 views

Python-chess : Are the move scores enough to rank moves from the most to least likely moves played by an engine?

My goal is to make a script to finding the most and least likely move an engine will play, and then make a list it. I tried using the scores to make such a list, with the best score equalling the most ...
4
votes
1answer
224 views

Leaving the score aside, what are the criteria allowing Stockfish to choose its “best move”?

I'm trying to understand how a chess engine like Stockfish works. I use Stockfish 10 directly, without an UI. For example, for this position (white to move)... r3n1k1/1bpp2pp/pp2p3/2P1P3/R2P4/3B1rPq/...
21
votes
2answers
4k views

The Game of the Century - why didn't Byrne take the rook after he forked Fischer?

I'm guessing that there's a pretty simple explanation for this, but I can't seem to see it. [White "Donald Byrne"] [Black "Robert James Fischer"] [fen ""] 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 O-O 5....
1
vote
0answers
82 views

SCID vs. PC: Multi-Engine Analysis

Is it possible to configure SCID to output the annotating engine in the variation itself? For example; Ne5 (Stockfish: -0.01 / +0.32 25. Bc4 ...) (Engine2: +0.20 / +0.48 25. 0-0 ...) (Engine3:...
2
votes
1answer
121 views

What are these chess.com figures from my English Opening game?

I am asking something that chess.com shows about the English Opening, based on a game that I recently played on chess.com Chess.com showed the following figures: 1.c4 e5 .. 2.g4 e4 9.6 5.8 -White:...
1
vote
1answer
97 views

How to stop Stockfish analysis?

I am using Chessbase 13. I would like Stockfish to stop analyzing until I make it start again. What happens now is that I make it stop, and as soon as I go on to the next move, it starts analyzing ...
4
votes
2answers
183 views

Strategy for next move in a crowded situation

White is in the presumably better position in the situation below. However, under such conditions (e.g. there are tight formations of many pieces on the board), I find it usually hard to 'breach' the ...
8
votes
2answers
2k views

What is the most suitable position for a bishop here?

Recently I played a game with White whose link is: https://lichess.org/pAoAUp4O/white#42 and reached this position: I am having a hard time finding why the moves I played next (22. Rxe8+? Rxe8 23. ...
2
votes
1answer
177 views

What is this opening/position called, and what is white’s best move?

[FEN "r1bqk2r/pppp1ppp/2n2n2/2b3B1/4P3/8/PPP2PPP/RN1QKBNR w KQkq - 0 1"] Do you know the name of this opening/position? Additionally, please tell me what white’s best move is in this position. I ask ...
2
votes
3answers
297 views

Is this KBPP vs. KR position a draw or a win with perfect play?

I played a game on Lichess today as white, and me and my opponent reached this interesting endgame position. [Title "Rewan Demontay-NN, Lichess, 5/14/19"] [StartFlipped "0"] [FEN "8/8/3r1kP1/5B2/4PK2/...
6
votes
2answers
597 views

How to evaluate and comment moves in PGN format?

I want, with Python-chess, to evaluate any movement of some game and generate the PGN with analysis, as Chess.com does in its analysis. For example, i played one game with fools mate and they ...
3
votes
3answers
744 views

Why was castling bad for white in this game, and engine strongly prefered trading queens?

I'm a novice player, trying to improve. In the following game I played as white recently on chess.com, I analysed afterwards and my worst move of the game was apparently when I castled. The engine ...
9
votes
5answers
3k views

Why not take the bishop with the knight (Guseinov vs. Bauer)?

In this game between Guseinov (2622) vs. Bauer (2634): Crete 2007 · French, Winawer, Alekhine (Maroczy) gambit (C15) · ½-½ [FEN ""] 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Nge2 Nc6 ...
0
votes
1answer
162 views

Why did the (Black) computer play 9. … Ke7 here?

Not having played chess in ~5 years, I started playing against the computer on my phone at ELO~800 (I've since reached ~900). I do not know what engine the app uses (Chess for iPhone by Mastersoft Ltd)...
5
votes
1answer
196 views

Why is 6. a3 a mistake compared to Qa4+?

I played a game on lichess recently. Afterwards, I used the analysis feature, including the "learn from your mistakes" feature, and it said that 6. a3 by white was a mistake, with 6. Qa4+ as best. I'd ...
2
votes
5answers
317 views

Why is it a mistake to trap this bishop?

In the below position, I played pawn from g7 to g5, trapping the white bishop. The computer didn't like that at all, and gives white a huge advantage. Instead, it wanted me to just simply develop my ...
8
votes
4answers
3k views

Reason why a kingside attack is not justified

Given my lead in development in this game, the presence of an advanced pawn on the 5th rank and the arrangement of the pieces toward Black king, I think that an immediate kingside attack is justified. ...
9
votes
2answers
2k views

Why is c4 a better move in this position?

The computer analysis on a game I played tells me that in the following position, White should have played c4 instead of e5: [fen "r3qrk1/pppb1ppp/1nn1p3/6B1/3PP3/P1P2N2/4BPPP/R2Q1RK1 w - - 0 1"] ...
6
votes
2answers
240 views

Poor gambit for white

I was white and played this against a 1589 rated player on Lichess. The gambit happens at move 10 and it is characterized as a blunder by stockfish analysis. However, black does some inaccuracies and ...
4
votes
2answers
584 views

What did I blunder at move 23?

I played a game recently on chess.com, where the most detailed analysis identified a single blunder in the game -- 23. d6 The analysis given by the computer suggested that 23 Qd1 was better, with the ...
4
votes
1answer
207 views

Why didn't Spassky play 26. g3 in game 5 of Fischer-Spassky (1972)?

Fischer's play was powerful in this Nimzo-Indian, achieving a strong knight against two bishops in a closed position. The knight became a monster on f4. But why did Spassky let the knight reach f4? ...
3
votes
2answers
244 views

Scotch 4 Knights with 4… d5

[FEN "r1bqkb1r/ppp2ppp/2n2n2/3pp3/3PP3/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 4 5"] If Black "mirrors" White's move 4. d4 in the Scotch 4 Knights, and White wants to play sharp, aggressive moves, what would ...
6
votes
5answers
2k views

What can I learn from my “80 average centipawn loss” game, which I thought I played well?

In a LiChess game (Vakeesh vs. becky82), during the game I thought I played well, and won as black without and real complications. Here's the game: [fen ""] [Event "Rated Classical game"] [Date "...
4
votes
1answer
378 views

Reason why Kasparov resigned in the “Enrage the Beast” game

[White "Garry Kasparov"] [Black " Vassily Ivanchuk"] [fen ""] [StartPly "62"] 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 b6 5. a3 Bf8 6. Nf3 Ne7 7. h4 h6 8. h5 a5 9. Bb5+ c6 10. Ba4 Nd7 11. Ne2 b5 12. ...
9
votes
3answers
307 views

Lichess Puzzle 82753: Can white win with a queen and two pawns vs. rook and four pawns?

Lichess puzzle 82753 involves a rook and pawn endgame where white sacrifices their rook to queen a pawn. The final position is the following (with black to move): [FEN "2Q5/6p1/1K3pkp/8/8/4p3/r5PP/8 ...
6
votes
3answers
585 views

Is there any software that will analyse games offline?

Usually I use Lichess to analyse games, but sometimes I am offline. Is there any software with the capability of providing offline computer analysis, giving the rate of inaccuracies/mistakes/blunders ...
1
vote
1answer
60 views

Questions about the beginning of this game

[Event "Live Chess"] [Site "Chess.com"] [Date "2018.12.29"] [White "Leon_Likes_Chess"] [Black "SmojLee"] [Result "0-1"] [ECO "B47"] [WhiteElo "1625"] [BlackElo "2310"] [TimeControl "600"] [EndTime "14:...
14
votes
3answers
1k views

Why do professional chess players point at the pieces with a middle finger?

I've recently heard and then actually started to notice more and more that professional chess players tend to use a middle finger when pointing at pieces on the board like in this Anand vs Caruana ...
5
votes
1answer
243 views

Which is better in the Rossolimo Sicilian, 3… e6 or 3… g6?

[FEN ""] [StartPly "5"] 1.e4 c5 2.Nf3 Nc6 3.Bb5 In this opening is it better to do e6 to activate the dark square bishop which will protect c5 pawn. If the opponent plays Bxc6, it will have a ...
2
votes
1answer
59 views

Bronstein vs Winter

In this game, http://www.chessgames.com/perl/chessgame?gid=1365631 The engine says that 20. Na5 is a blunder. However, I fail to understand why it is. Also, I am surprised at White's choice of moves ...
2
votes
2answers
175 views

Is this a smart draw offer?

[Event "Live Chess"] [Site "Chess.com"] [Date "2018.12.27"] [White "SergioRamos2"] [Black "SmojLee"] [Result "1/2-1/2"] [ECO "B57"] [WhiteElo "1640"] [BlackElo "2175"] [TimeControl "600"] [EndTime "10:...
29
votes
7answers
5k views

Would studying the games of old players hurt my progress?

I was watching a video last night by Ben Finegold on Paul Morphy and some of his games. He mentioned that some current GMs would discount Morphy's ability since all of his opponents were "terrible". ...
5
votes
2answers
205 views

Why doesn't white play Bd2 after this …Qa5+?

I was looking at an analysis which shows this position ( from Bacrot - McShane 2018). At this point Black just played ...Qa5+, and the only moves that are analyzed for white are Kf2, c3 and Qd2. This ...
0
votes
1answer
222 views

Is any tool which allow analyse EPD file and add evaluation score per I want specify depth/multi PVL?

I tested some tools which allow analysis EPD files but they not work like I want: I can use Arena but it will not annotate back EPD - it create protocol file. I can use SCID vs PC but it will not ...
6
votes
2answers
528 views

Question about the move h5

I recently played a chess game whose link is: https://lichess.org/pCFw1h2w/black#5 After running a computer analysis, I found that in this position: I know that even though Stockfish does not tell ...
17
votes
8answers
7k views

Why is Carlsen being praised for his tie-break play, when Caruana made several game-losing moves?

I followed the three games live on chess24.es (for live commentary from GMs) and chess.com (for actual real time computer analysis). As per my understanding: Game 13 was mostly balanced until 19... ...
4
votes
1answer
581 views

Is there any analysis of the Carlsen-Caruana World Championsip match by AlphaZero?

How cool would it be to have the world's most powerful computer analyzing games played in a match between the world's two strongest human players? Has it happened yet and is the analysis available?
3
votes
2answers
1k views

Website that decode chess moves?

I am a complete beginner and have started learning chess one month ago. I play online on lichess.com. I lose a lot of games which is understandable too. Many people advised me that I should analyze ...
3
votes
1answer
372 views

Is this a sound elephant offer?

In the following dobutsu shogi position, is Gc3xc2 a bad move? ABC +---+ 1| | g 2|lce| 3|E G| 4| L | *C +---+

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