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.

Filter by
Sorted by
Tagged with
2
votes
2answers
46 views

Why is this position a forced mate?

I was playing a game against one of the chess.com bots, as shown below (I was playing as white). On analysing the game afterwards, I'm aware I made a lot of mistakes, but the one I'm really confused ...
-1
votes
0answers
70 views

Why so much fuss about a possible 20 c4 by Nepomniatchi vs Carlsen in Game 5? [closed]

Was there too much fuss about a possibile 20 c4 by Nepomniatchi in Game 5? After all , even after c4 , Stockfish 14 dev depth = 62 evaluates the position as +0.47 , that means a nearly certain draw. ...
4
votes
1answer
312 views

Why this exchange

I’m reading a book saying that now black Knight at b4 is under attack so need move away. However Stockfish app suggests take the white c3 Knight first using f6 Bishop , then black will Rcxc3 take the ...
0
votes
0answers
102 views

Did Geller resign in a drawn position vs Spassky in a 1959 game

Did Geller resign in a drawn position vs Spassky in 1959 ? Or could White win ? The famous controversial position is the following : [FEN "6k1/6p1/7p/7P/2q1B1P1/Kp3P2/1B6/2N5 b - - 0 1"] ...
7
votes
2answers
504 views

Why don't engines show explicitly that a certain move takes to a threefold repetition (instead of just showing 0.00)?

I get that from the point of view of the engine there's no difference; equal is equal. But for a human analyzing with an engine, I find quite important to note that a move takes to a balanced position ...
1
vote
1answer
61 views

Erenburg vs Nakamura 2004

Did Erenburg operated a winning exchange sacrifice vs Nakamura in the Reykjavik 2004 game , Sicilian Najdorf opening ? Or could Nakamura have defended the position ? I analyzed the following position ...
6
votes
1answer
100 views

In French Defense Advance Variation, why does white play an early f4?

Game. First five moves: [FEN ""] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. f4 Why did white play f4? My guesses: To defend e5 in the case d4 falls. Pawn pointing theory seems to indicate ...
4
votes
2answers
362 views

Engine's 2nd best move

Especially for checking studies (maybe also for teaching), it would be helpful to have an engine finding the second best move and assess it (or even give refutations of all alternatives). For a ...
7
votes
1answer
214 views

Why is the immediate ...d5 in the 4. d3 Italian not played?

The line may seem suspicious at first, but after a few precise moves (some may say artificial moves) by Black an interesting middlegame position is reached. I did some analysis on my own and probably ...
3
votes
1answer
276 views

How is c4 the best move in this position?

[FEN "rn2r1k1/pp2qpp1/3b1nbp/2pp4/6PP/1B1PBP2/PPPQNK2/RN2R3 b KQkq - 0 14"] 14... c4 15. dxc4 Nxg4+ I set up the above position in Stockfish and the initial analysis was that c4 was the ...
13
votes
2answers
4k views

Why does Stockfish suggest h4 here?

Analyzing my latest game on chess.com, Stockfish says that h4 is the best move here: I followed the line, but I failed to understand the reasoning of this move. Is it for some long-term advantage? ...
3
votes
1answer
52 views

Where can Botvinnik's analysis of Botvinnik - Gligoric, Tel Aviv 1964 be found?

I have seen an old post in a chess forum referring to Botvinnik's own analysis of the game presented below. I have searched, but did not find it. Where can the analysis be found? If you can provide a ...
7
votes
2answers
2k views

How does white stop the three pawns and win this?

I arrived to this position, black, me, to play, in a tournament game, with plenty of time to think on both sides. Stockfish gives initially +55 and finally mate in 27 for white. Fortunately for me, my ...
5
votes
4answers
268 views

Why does Stockfish give an evaluation of +7.42 here?

[fen "r3k1nr/pppqn2p/5p2/b5p1/3PP3/1BP2QBP/PP1N2P1/R3K2R w KQkq - 3 14"] This game was played by me on chess.com recently. (I am white). The material balance is +1 (for white). Then why is ...
-5
votes
1answer
64 views

Jobava vs Milton 2005 Skandemborg game

In the following position, from the above game, the book ROOK vs Minor pieces endgame give AN almost easy win for White. Yet I tried on my Houdini 6.02 and got a draw instead. The position is WHITE ...
21
votes
2answers
3k views

Why is ..Kh8 so much worse than ..Kg7 after Nf6?

I just "failed" this Lichess exercise. Main line is Stockfish's, secondary is mine's. [FEN "r5k1/3N1p1p/2p1p1pb/3pP3/p2P3q/5P2/PP2QP1P/R4RK1 b - - 2 19"] 1...Bf4 2. Nf6 Kg7 {-5.4 ...
2
votes
1answer
104 views

Rook vs Bishop endgame

In the following endgame position, from Dautov vs Heinemann, from the book FUNDAMENTAL CHESS ENDING, what happens with perfect play? [FEN "R7/5pkp/4b1p1/3p4/8/5P2/5KPP/8 b - - 0 1"] The ...
2
votes
1answer
140 views

A suggestive opposite color Bishop ending

The following position appeared to drive even modern engines crazy! [FEN "8/8/b1kP2p1/P5P1/8/BK6/8/8 b - - 0 1"] BLACK to move will get the following results: Komodo 24.1 64-bit depth 61= 3....
8
votes
1answer
168 views

Reanalyzing old chess books

Computers were demolishing analyses way before they became God (see e.g. here), but latest at ELO 3000 or so it became humiliating. Do you know instances of chess books explicitly rewritten years ...
-1
votes
1answer
144 views

A rook endgame from a classical book

From the game Kozul-Kurajica, Sarajevo 1998: [FEN "2r3k1/5pp1/1p5p/3p4/8/P5P1/1P3PKP/4R3 w - - 0 0"] In the above position; Stockfish 12 at a depth of 42 evaluates the position the position ...
0
votes
1answer
96 views

Position Analysis - Win or Draw - Efimeko v Rublevsky 2009

Is the current position winning or equal , and with the perfect play what would be the resulting position. [Event "Karpov Poikovsky"] [Site "Poikovsky RUS"] [Date "2009"] ...
0
votes
0answers
120 views

Is the following position a win for White or a draw?

The deceptively simple 11 piece position is hard to decifrate. In a Sicilian Defense, Paulsen variation, the following position appeared on the board: Grandellius vs Andreikin, Black to move. What ...
-2
votes
1answer
67 views

King's Indian Attack position analysis

So, after some 20 moves, we have reached this position. Who is better ? What should be the ideal plan/threat for both white and black ?
23
votes
2answers
9k views

Why does chess.com consider this promotion a blunder?

I've just played a game on Chess.com, and I'm surprised that the engine considers a promotion that I made a huge blunder. Like, my position was rated -62.8 (basically a won game), and after I promoted ...
2
votes
1answer
121 views

Is it possible to measure play strength by analysing games of a player?

I am thinking on a way, most ideally on a software tool, what could get one of more games of a player, analise them, and gives an estimate on his play strength (as Elo/Glicko rating). Is it possible? ...
6
votes
4answers
236 views

Why exchange the knight for the bad light-squared bishop?

Here is a recent game in the King's Indian I had as Black: [Event "Rated Rapid game"] [Site "https://lichess.org/za0zcaTi"] [Date "2021.08.23"] [White "tomx2"] [...
1
vote
1answer
113 views

How do I convert a move from coordinate notation to algebraic notation?

The following Python code gives the best move in coordinate notation: import chess import chess.engine sfEngineTxt = "E:\Chess\Stockfish\stockfish_14_x64_modern" sfEngine = chess.engine....
5
votes
3answers
186 views

Tiniest readable board and pieces design

Has anyone developed a graphic design format for representing boards within a very tiny amount of space? I'm thinking along the lines of how sparklines were developed to allow a line chart to be ...
4
votes
1answer
112 views

Karkops,M vs Dautov R. Is this a win really?

Karsten Müller analyses this position as win for black. 8/R4p2/6p1/4k2p/p6P/r5P1/5PK1/8 b - - 0 44 He thinks 44.. Kd5! is the only move to win. I tried to follow his suggestions whilst playing ...
1
vote
1answer
46 views

Python-chess : How to make infinite analysis in multiPV mode?

I need to run infinite analysis in multiPV mode. How to do it right? My code doesn't work. original_fen = "7k/1b1r1pp1/3Bp1np/1p2P1q1/8/1PQB2P1/2R2P1P/6K1 b - - 3 23" original_board = chess....
3
votes
1answer
99 views

Pattern Recognition - Chess Tactics

I have a collection of ten thousand games of a player. Is there a way to look which kind of tactics does the player miss on most often? Which tactics does he need to focus on?
4
votes
1answer
286 views

I can't understand this puzzle

I came across this puzzle and even after I learned the answer I couldn't quite understand what's going on. I understand that we amaterial advantage by capturing the knight with a pawn, but I can't ...
4
votes
1answer
151 views

Why don't masters play 7...e5 against the Fianchetto Variation of the King's Indian?

In the Lichess database, this is the most popular way to play against the Fianchetto Variation of the KID: [FEN ""] 1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nc6 7.O-O e5 But at ...
2
votes
1answer
181 views

Where was Stockfish's fatal mistake in this game against Leela?

This is a game from the TCEC Season 18 superfinal, which Leela won with a beautiful positional bind. [FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"] [Event "TCEC Season ...
4
votes
2answers
145 views

Is the Dunst Opening with 3. Nce2 unsound?

I am trying to find a line in the Dunst Opening where: White's guaranteed to develop his bishop to an active square such as c4 or b5. Black doesn't get to suffocate White by playing d3. So far I ...
14
votes
2answers
4k views

Which methods can be used to prove that a position is illegal?

Given a board position, there are programs that try to find a series of legal moves that lead to it. Are there algorithms that can do the opposite - prove that the position is not reachable by a ...
2
votes
1answer
140 views

How do I get Stockfish to write its analysis to a file using a batch file on Windows?

I can get this to work in a Windows Command Prompt window as follows: stockfish_14_x64_modern.exe uci ucinewgame position fen rnb1kbnr/ppp1pppp/8/3q4/8/8/PPPP1PPP/RNBQKBNR w KQkq - 0 1 go depth 17 ...
-1
votes
1answer
101 views

Why are these sequence of steps played to solve this puzzle?

[FEN "rnbqkb1r/pp4pp/2p1pn2/3p1p2/3P4/BP4PN/P1P1PPBP/RN1QK2R b KQkq - 0 1"] [StartFlipped "0"] 1... Bxa3 2.Nxa3 Qa5+ 3.Kf1 Qxa3 FEN: rnbqkb1r/pp4pp/2p1pn2/3p1p2/3P4/BP4PN/...
3
votes
1answer
202 views

Why does Stockfish evaluate this position as equal?

After solving the puzzle while I was analyzing this endgame, I was just surprised to see stockfish evaluates this position as equal. After Ke4, Ke6 (Opposition); Kf4, and f5 -- I can't find out any ...
2
votes
0answers
48 views

Online tool for chess analysis: comment, add variations, insert diagrams, print

Sometimes I like to analyze and annotate my own games and print them on paper. This would usually include commenting some moves, adding variations, inserting diagrams for certain positions, etc. I ...
3
votes
3answers
194 views

Why does Stockfish evaluate this Lichess puzzle position as so advantageous for Black?

[Event "Rated Rapid game"] [Site "https://lichess.org/tZI4OlZ3"] [Date "2021.04.20"] [White "Paulinos"] [Black "Qedesh76"] [FEN "r3qrk1/2pbbppp/...
7
votes
5answers
639 views

What is the point of c3 in the Sicilian Alapin?

In the Alapin variation of the Sicilian, the game goes 1. e4 c5 2. c3. However, this sequence just blocks the b1 knight from its best square, and it doesn't develop anything. Both squares attacked by ...
8
votes
3answers
1k views

Why did Lichess annotate this as a blunder?

Lichess analysis annotated 4. Nf3?? as a blunder preferring (4. Nc3) (see on Lichess). I am trying to understand the ideas that make this a blunder. At depth 23 with Stockfish 13+ NNEU, both were ...
21
votes
2answers
4k views

Are there any moves that humans agree are best which engines cannot see?

Are there any moves from real, preferably reasonably well known games which humans agree are great moves, but which engines cannot see, or, at least, think are weak/average? Here is an example that I ...
8
votes
1answer
2k views

How does black proceed in the following position?

Shown below is a game I have been trying to solve, Black has been better for the whole game but resigns at the end. On checking the analysis stockfish says black is still better [Event "Hourly ...
4
votes
2answers
244 views

Who is actually winning here?

I came across this interesting position: [Title "Black to move (with full castling rights)"] [FEN "r2qkb1r/pp1nn1p1/7p/5N2/3p4/2P2N2/PP2QPPP/R1B3K1 b kq - 0 1"] On first glance, ...
1
vote
0answers
143 views

ChessBase and Scid vs Pc Annotation

Before posting, I searched all around the board to find if anyone else had asked the same question, but no luck. So I am legally blind, but I love to play chess, and I like to annotate games. Chess....
8
votes
2answers
3k views

Why is g3 a bad move here?

Why is the last move by white, g3 on the board below, considered a bad move? It was in a game that I played recently and my idea was to protect the bishop in f4 and give the other bishop more space to ...
5
votes
1answer
295 views

Why is the King's Indian often used to play for a win against 1. d4 when it allows an early queen trade?

Lichess's opening explorer database shows a 49% win rate for White wins compared to Black's 41% in the King's Indian, Exchange Variation. Meanwhile, the Master's database shows a whopping 64% draw ...
4
votes
4answers
816 views

How to realize this +2 evaluation in the Ruy Lopez, Steinitz defense

I played a game as White using the Ruy Lopez: Steinitz defense against a lower-rated player (1594 vs. 1500 on chess.com). While I won the game due to a blunder by my opponent in a drawn endgame, the ...

1
2 3 4 5
17