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Questions tagged [analysis]

Questions related to determining the Truth behind positions. This includes who is winning, what the next move should be, and what happens when a certain move is played.

1
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0answers
9 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
18 views

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

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
371 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 ...
16
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
475 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?
2
votes
2answers
127 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 ...
2
votes
0answers
107 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 +---+
0
votes
1answer
94 views

Decent Playing Strength Chess Engine

I'd like to make a chess program to play decent strength chess (say around 2100 ELO). What are the factors in Eval & techniques in Search that one would consider to achieve that rating?
3
votes
2answers
148 views

Analyzing using Chess Engines - Giuoco Piano/Steinitz Variation

[FEN ""] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. bxc3 d5 10. Ba3 dxc4 11. Re1 Be6 12. Rxe4 Qd5 13. Re3 O-O-O 14. Ne5 Nxe5 15. Rxe5 Qxe5 16. dxe5 ...
5
votes
3answers
242 views

confused about a move played by a grandmaster

In this site : https://www.365chess.com/game.php?gid=2941895 I saw a game between two chess professional players : Efimenko, Zahar (2566) vs. Kaliuzhny, Andrey (2213) [fen ""] 1. e4 d6 2. d4 Nf6 3....
6
votes
2answers
114 views

Should aspiring chess players analyze all of their games?

Or is time better spent analyzing particular games (like a match between two masters)? In general, is it better to play more, and analyze a few of those games, or to play less, and analyze most of ...
1
vote
2answers
112 views

Why do engines run faster if you only have one line of analysis open?

When I load up an engine (like Stockfish), it reaches a higher depth quicker if I only leave one line of analysis open. If I leave multiple lines open, it runs slower. Why is this?
23
votes
1answer
7k views

Can a knight move through all squares from its original position?

I'm so confused about this. I googled it and read about knight's tours, however they all start from illegitimate positions. I want to know if a knight can move through all squares from its original ...
3
votes
1answer
245 views

What are the strategies of Alphazero? [closed]

Alphazero is an amazing chess engine, one of the best in the world. It also has a more "human" playing style than other engines. Furthermore, understanding this engine might be vital to improving the ...
3
votes
5answers
243 views

How can a human figure out best move in this position?

Why is 12. b4 played by a GM? Why doesn't he just capture the bishop? And how can he forsee so far in the future? Am I missing something?
1
vote
3answers
139 views

How to package PGN in Lichess analysis page format

I am trying to bundle together a couple of games on my own website. I would love to have an interface like Lichess's analysis page: You can turn on the Stockfish engine, try out different moves and ...
-3
votes
1answer
114 views

Can you check my games? [closed]

I play mostly blitz and stick to a particular style (as black- stonewall +variations and as white just an f-pawn attacking style). It's pretty wild but I manage to surprise higher ranking players on ...
1
vote
3answers
114 views

Analysis of my recent King's Indian Defense game

I'm looking for any feedback on positional ideas I've missed on a recent KID game I played (as black). We were both about 1900 Elo, although I was slightly higher rated. I've obviously already ...
-1
votes
2answers
100 views

Moving a pawn to attack a piece on the 5th or 4th rank

I have not been able to tell why my computer sometimes tell me that advancing a pawn from its original square in order to kick an opponent piece is right and other times wrong. Take for instance, this ...
0
votes
1answer
80 views

Doubt about defending piece

I just played a chess ga,e whose link is: https://lichess.org/mn8mcGT7/white#15 And I reached this position after the seventh move of Black. I want to know why it is wrong to defend the piece with ...
0
votes
1answer
68 views

Chess players and compicated positions [closed]

Who are the best chess players of the past and present who create complicated positions and emerge as winners?
1
vote
2answers
114 views

Why I can not improve in chess & why I can not see the things? [closed]

Why is it that I can not improve in chess? When I lose a game, I feel very angry. I am always trying to improve so I played a lot, but I can not see any improvement. Please suggest me something.
0
votes
2answers
114 views

French (white) loss to a master - where could I have improved?

[FEN ""] [Date "6/16/2018"] [Round "7"] [White "Me"] [Black "Opponent"] [Result "0-1"] [WhiteElo "1874"] [BlackElo "2286"] 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. ...
2
votes
2answers
153 views

Loss to a master, where did I go wrong? Two knights 4.d3 (black)

[FEN ""] [Date "6/15/2018"] [Round "6"] [White "Opponent"] [Black "Me"] [Result "1-0"] [WhiteElo "2248"] [BlackElo "1874"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Bb3 d6 7. c3 Bg4 8. ...
-4
votes
1answer
244 views

LICHESS analysis, why did it propose this outrageous move? [closed]

I was playing a game on lichess, and afterwards asked for a computer analysis, where instead of my perfectly fine move XX the computer insisted on another better move YY, why is that, how can I ...
2
votes
2answers
142 views

Is Bg5 a mistake or inaccuracy there?

[FEN ""] [STARTPLY "8"] 1. e4 e5 2. Nf3 d6 3. d4 Nc6 4. c3 Nf6 5. Bg5 h6 6. Bxf6 gxf6 7. Bb5 a6 8. Ba4 b5 9. Bb3 a5 10. O-O b4 11. a3 bxc3 12. Nxc3 exd4 13. Nxd4 Ne5 14. Re1 h5 15. h3 d5 16. Nxd5 f5 ...
10
votes
5answers
2k views

Why h4 is the best move here?

Is not bishop to e2 better? Why does the kingside has to be weakened like this? Thanks everyone for your answers. You all argue that the knight must remain on f4 so h4 prevents kicking it out. ...
2
votes
2answers
152 views

Why couldn't I win this Maroczy Bind (vs 2000)?

[FEN ""] [Date "6/10/2018"] [Round "5"] [White "Me"] [Black "Opponent"] [Result "1/2-1/2"] [WhiteElo "1874"] [BlackElo "2000"] 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. c4 Nf6 6. Nc3 Nc6 7. Be3 O-...
3
votes
2answers
72 views

Loss as black in 4.e3 English / rook ending

[FEN ""] [Date "6/10/2018"] [Round "4"] [White "Opponent"] [Black "Me"] [Result "1-0"] [WhiteElo "2383"] [BlackElo "1874"] 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. Qb3 O-O 6. Be2 d6 7. d3 Rb8 8. O-...
2
votes
3answers
152 views

Strange 16-move semi-slav loss (black)

[FEN ""] [Date "6/9/2018"] [White "Opponent"] [Black "Me"] [Result "1-0"] [WhiteElo "2217"] [BlackElo "1874"] 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 h6 6. Bxf6 Qxf6 7. e4 dxe4 8. Nxe4 Bb4+ 9. ...
2
votes
2answers
178 views

English/KID loss as white to a 2300+ player

[FEN ""] [Date "6/9/2018"] [Round "2"] [White "Me"] [Black "Opponent"] [Result "0-1"] [WhiteElo "1874"] [BlackElo "2332"] 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e4 d6 6. Nge2 c5 7. O-O Nc6 8. d3 ...
7
votes
1answer
1k views

Why would trading this bad bishop be a bad move?

When running a game I played through the analysis engines, I get that my 12th move, 12.Ba3, was an inaccuracy (-0.3 -> -1.3). Since my center pawns are on dark squares, I assumed my dark bishop was a ...
2
votes
4answers
145 views

Where did I go wrong? QGD loss as black

[fen ""] [Date "6/8/2018"] [White "Anonymous"] [Black "Me"] [Result "1-0"] [WhiteElo "2146"] [BlackElo "1874"] [Opening "Semi-Slav Defense"] 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. cxd5 exd5 6. ...
4
votes
2answers
193 views

Disappointing Drawn Game Analysis

I recently played a not-so-good tournament, my US rating is a little under 1900, and this is a game where I had a draw against a 1600 player that reminds me of how I played when I was 1700. My ...
4
votes
2answers
156 views

Why sacrificing a pawn was more preferable over more materialistic moves in Nakamura vs Ding in Altibox Norway Chess 2018?

Why sacrificing a pawn in this situation, 19... h5 is slightly more preferable by engine over more materialistic g6 or Kh8? This is in fact what Ding chose to play actually. Obviously, this is to ...
6
votes
1answer
202 views

Why does Caruana kick Aronian's bishop?

Why does Caruana push 11.h3 against Aronian? [fen ""] [startflipped "0"] [startply "20"] [title "F. Caruana v. L. Aronian, FIDE Candidates 2018"] 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 ...
0
votes
1answer
113 views

What's the best move by white in this game?

In this game white must win. Please help me.
1
vote
2answers
87 views

Way to Logically Predict Approximate Chess Rating in Pop-Culture Games [closed]

After seeing a video of an analysis on the chess game in A Game of Shadows between Sherlock Holmes and Moriarty, it made me wonder what their fictional ratings would be around. Other games like the ...
5
votes
3answers
308 views

How can minimax chess engines do alpha-beta pruning without reaching the final positions?

In order to calculate far ahead, minimax chess engines must perform alpha-beta pruning, where they don't calculate positions that are obviously winning or obviously losing. Without doing pruning, ...
7
votes
2answers
270 views

How do chess engines evaluate a position if the position is in the middle of an exchange?

In the minimax algorithm, chess engines do a depth-first search as far as they can calculate ahead, and then evaluate all these final positions. Then, using these evaluations they work backwards one ...
11
votes
2answers
2k views

Why is White's “25. Bh4” considered a great move in Karjakin vs Kramnik at FIDE Candidates Tournament 2018?

I was watching Karjakin vs Kramnik at the FIDE Candidates Tournament 2018, Round 9, and simultaneously observing the chat feed at chess24.com, where people unanimously glorified the move 25. Bh4. Why ...
2
votes
2answers
78 views

How can I continue in this situation?

I am stuck for a move as White. Is there any way to go for a check-mate? I would take the black rook with my rook at d1 but would that be a bad decision?
12
votes
3answers
4k views

How to objectively explain a positional advantage is worth a sacrifice (re: a specific example)

I was given the below position in the US chess magazine. Author said this position is "hopeless for black". Lichess engine says 1.5 advantage for white. Why? I understand "piece points" are only a ...
4
votes
2answers
92 views

What service can be used to save and replay/analyze a chess match?

I've been starting to write down my chess matches in a scorebook, but would like to find a site where I can transcribe the match and then replay move by move by game to help me analyze what I did well ...
7
votes
1answer
175 views

In the Dubois-Steinitz match (1862), at what point does the match become irreversibly lost for White? And why does the engine not pick it up early?

I am a beginner player (~1400 rating on lichess). I was studying a famous match between Dubois and Steinitz shown below (analysis done by Stockfish on lichess.org). My doubts are: 1) At what move ...
4
votes
2answers
579 views

The principal variation is always wrong!

I read in an internet blog that when analyzing my games with an engine, it is often useless to copy the principal variation to my annotations, because (they say) it is well known that the principal ...
4
votes
2answers
160 views

Endgame analysis : white to play and..?

R3nk21B1K4/4r3/4P3/3Pb3/8/3P4/8/1B1K4 w - - 0 1 White to play and ?, D.Antonini 09/2017 I wouldn't qualify this position as a study, at least according to modern canons for study composition, as ...
5
votes
4answers
255 views

Formulating a Precise Definition of “Space” in Chess

Premise I have always enjoyed playing recreational chess, so I know the basics and some general tactics / strategies. It was only recently though that I have gone more hardcore, so to speak, with my ...
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votes
1answer
97 views

What would be the estimate of the ratings of white and black in this game? Keep in mind, it's a rapid game [closed]

[Event "Rated Rapid game"] [Site "https://lichess.org/PuymBQf1"] [Date "2018.02.22"] [Round "-"] [White "chess_lover_2001"] [Black "potema"] [Result "1-0"] [FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/...
2
votes
6answers
266 views

Best practical chances after g5 forking knight and bishop

I am a beginner playing white and it's my turn to move. What is the best possible move in response to this fork? [title "Game position after fork:"] [fen "r1bqr1k1/ppp2p2/2n1pn1p/3p2p1/1b1P1N1B/...