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14
votes
2answers
3k views

Can a player be forced to adjust a piece?

If one of my pieces is knocked off the board unintentionally, do I need to place it back on the board? Can I continue to play with one or more pieces not on the board (but still have it in effect - ...
0
votes
2answers
60 views

How is this a “draw by three-fold repetition”?

How is this a draw by three-fold repetition? Following my last move, the app notified me of a draw by three-fold repetition. [FEN "..."] 1.Nf3 Nc6 2.Nc3 h6 3.d3 Nd4 4.Qd2 a6 5.Qe3 Nf6 6.Qxd4 Rb8 7....
3
votes
2answers
453 views

chess.com Analysis “Accuracy” - What score is computer like for a given rating?

I have a few questions about engine use detection at online games on chess.com: Let's say both players are rated 1800 on chess.com online play and they make n number of moves in a game. White has 90%...
-2
votes
1answer
81 views

How to force Stockfish to make mistake [closed]

I developed a bot. It had a 100% win rate and my account was banned. I need to get it to make mistakes but can't force Stockfish to do it. How can I modify Stockfish to make mistakes?
6
votes
3answers
279 views

How important is playing chess games while you are working on to improve your chess?

I am trying to improve my chess and I spend about one hour in morning doing tactics and around one and half hour in evening studying endgames. I am following this schedule for about 2 months now and ...
7
votes
2answers
1k views

FIDE rules when opponent accidentally promotes to your Queen

This happened to someone else recently in a time scramble during an OTB game. His opponent promoted a pawn and placed a Queen of the wrong color on the board. He was corrected by the player and the ...
27
votes
3answers
4k views

Should a player be forced to move a piece that he has picked up after a spectator knocked it off the board?

While anyone can answer this, I do have official FIDE arbiters in mind. I am following a discussion on chess.com about the worst way you have lost a game. Someone related this story: This didn't ...
11
votes
7answers
5k views

Losing to low rated players

I’ve been having this problem for a while and every answer on the Internet I see is "Oh just dont be too confident.” But that’s not the issue I have as I try my hardest in all my chess games. I’m ...
11
votes
3answers
652 views

Why 4… Nxb4 is not played in Evans gambit?

4... Nxb4 is never played on chesstempo database for +2200 players games, being Bxb4 the most popular move. I don't find any significant change after capturing the pawn with the knight unless after 5....
3
votes
1answer
37 views

Chessbase Nalimov tablebases

I'm using Nalimov tablebases with Fritz14 and it basically works. Just one strange problems occurs: The engine doesn't mate because the final mating move isn't sorted correctly. It look like this: +- ...
8
votes
1answer
199 views

Difference between 7. Qc2 vs 7. Qa4 in the Catalan

This is a position from the main tabia of Catalan Opening: rnbq1rk1/ppp1bppp/4pn2/8/2pP4/5NP1/PP2PPBP/RNBQ1RK1 w - - 0 7 d4 Nf6 2. c4 e6 3.g3 d5 4. Nf3 Be7 5. Bg2 O-O 6. O-O dxc4 The main move for ...
8
votes
2answers
829 views

B pawn sacrifice

I have just played a game in which there was a thematic sacrifice of the b pawn. I cannot understand why this is useful. The opening of the file cannot be attacked by White as apart from Black bishop, ...
2
votes
1answer
79 views

What is the advantage in knowing the fastest winning sequence if I can win with few more moves than fastest sequence?

I am studying from Lazlo Polgar's "Chess: 5334 Problems, Combinations, and Games", there are positions with heavy material imbalance for example like a lone King against Queen, 2 Knights and King ...
9
votes
2answers
131 views

Nationality of the Azerbaijan Shakhriyar Mamedyarov and Teimour Radjabov

I hope this kind of question is allowed. In any case, I want to clarify that there is no intention for racism or political arguments, etc. It is just a sincere wonder from the anthropological point of ...
14
votes
3answers
5k views

Did Fischer really have a 180 IQ?

I have read many times that Bobby Fischer had an IQ of 180. Did he really have that high an IQ? Does anyone have proof that he was ever even tested (like a citation from an early book about him)? ...
11
votes
3answers
547 views

Why is Bf5 good in this position?

I would like to know why playing Bf5, allowing White to exchange the white-squared bishops, doubling Black's pawns is good for Black. In such situation, castling on either side seems quite unsafe for ...
2
votes
0answers
47 views

How to reduce the number of playouts on LeelaChessZero?

So after checking the wiki it seems the parameter "--playouts" allows to chose the number of playouts. But when I try it on my laptop it just fails: $ ./lc0 -w meangirl-7.pb.gz --playouts 5 v0.23....
7
votes
2answers
467 views

Is there a reason for MC's second move?

In this game, Magnus Carlsen made an unusual poor first move Nh3. Presumably, it was to throw off his opponent, especially since the game was under fast time controls, so that is understandable. But I ...
3
votes
2answers
67 views

Creating program for finding top players with respect to elo and age

I want to create a program for personal use but also maybe for publishing it on the web, in order to detect the top players with respect to elo and age. There will be two cases: A) In this case, ...
20
votes
3answers
3k views

Why is Leela so good at beating Stockfish in the French/Caro-Kann?

I notice Lc0 is especially good against Stockfish in French / Caro-Kann pawn structures. However, I don't understand why. Here're a couple of games where Leela smoothly outplays Stockfish. Can anyone ...
3
votes
1answer
70 views

How many matches have there been at the top level which have ended up with a tied score and a winner?

In the current FIDE Grand Prix tournament in Jerusalem the first round match between Pentala Harikrishna and Sergey Karjakin ended in a tied score, 4.5-4.5, but Karjakin won because the last game was ...
14
votes
4answers
3k views

How bad is 1. e4 c5 2. Nf3 d6 3. a3?

Is this move clearly losing for white? Chessgames.com shows 1 win and 2 losses for white only, and I could not find any other reference for this move.
23
votes
5answers
4k views

What does it mean to play “positionally”, and how do you train that?

I often hear this term thrown around when people are analyzing chess, but I don't really know what it means. I assume it's a generic term that means to play defensively, or to set up for the future. ...
7
votes
6answers
4k views

Moving into check for a draw as black, why is it illegal? Comparison to Racing Kings

I am confused why you cannot move into a check when it can force your opponent to capture your king and expose theirs. In such a case why is there no extra move to result in a draw? In the "Racing ...
5
votes
1answer
45 views

Recommendations for kids sites

I am a teacher, and don’t really play much. My students like chess and I want to send them to some safe chess sites for kids. Recommendations?
6
votes
3answers
151 views

Is it a good habit for an amateur to always try to play the best move (according to his best calculation and knowledge)?

Is it a good habit for an amateur to always try to play the best move (according to his best calculation), instead of sometimes purporsely play an inferior move hoping that his opponent does not know ...
2
votes
1answer
39 views

Analysis of a position in order to find the best move

I am trying to learn to play chess, but it is not an easy task. I am playing as much as possible and try to watch games an reading in order to learn. I am playng on Chess.com, and a lot of times I ...
2
votes
3answers
218 views

Analysis of a position of a low rated player in order to improve

I am a beginner in chess, and I am trying to learn how to play well. I am rated 800 in Chess.com, so I have a really low rating, and I am trying to improve it. I was playing a game and I have been in ...
5
votes
5answers
182 views

If elite players prefer to play short draws in knockout competitions, why not skip them and go straight to tiebreaks?

From the Chessbase article covering the Jerusalem GP: After day one of the quarter-finals finished with disappointingly short draws on all boards, FIDE Press Officer Anastasiya Karlovich made a ...
16
votes
4answers
8k views

Carlsen beat a high ranking GM with 1 Nh3. Conclusions?

In 2018, Magnus Carlsen played a rapid game on chess.com agaisnt Grandmaster Aleksey Dreev in which his opening move was 1. Nh3. [Title "Magnus Carlsen-Alexey Dreev, Pro Chess League, chess.com INT, ...
2
votes
3answers
99 views

Books for beginners who have hard time understanding positions of pieces?

I'm new here and I found a book called Logical Chess by Chernev. Is this a great book to start if you are a beginner and you only know how to move pieces but not how to develop them? I'm having a hard ...
3
votes
2answers
141 views

Is it inadvisable to analyze or play long chess games on a smartphone?

I play a lot of online chess, but I am a federated player whose objective is to play well over-the-board games with 3D pieces. During my hourly tactics exercises I turn on the computer and do it in ...
7
votes
10answers
7k views

Is a Finite State Machine a good way to model chess?

A very common model in programming is the Finite State Machine (FSM) (see here for a great worked example.) Is a FSM a good way to model chess? What are the best ways to go about it? What chess ...
2
votes
2answers
3k views

Why doesn't Stockfish (DroidFish) try to flag me?

Imagine the following position: [FEN "3k4/7p/7K/3B4/8/8/8/8 w - - 0 1"] White is played by Stockfish in DroidFish and black by human (me). We both have 15 seconds. After a few moves, white bishop ...
10
votes
5answers
2k views

What are some games I can watch to become better in playing chess?

I have just started learning to play chess and I find it really interesting to learn. I would like to learn as much as possible in order to become a good player. I looked on Youtube, trying to find ...
7
votes
1answer
343 views

Finding New York City tournaments as a visitor from Moscow

I am visiting New York City from Moscow. How can I find tournaments there?
1
vote
0answers
31 views

Winning when the other player is in stalemate? [duplicate]

Do I win if the other player has only their king left and cannot move it because any move will result in its being captured?
2
votes
3answers
153 views

Penalty for violating FIDE rule 8.1.2 - writing moves in advance

At one of the chess league fixtures recently, one of the players was writing moves in advance of moving the pieces on the board. As per the FIDE rule 8.1.2 it's forbidden to do so, but in practice ...
4
votes
2answers
104 views

Improving my skills is getting harder

I am new to chess and I am playng mostly online at sites like chess.com. Now I have a rate around 800, so it is still low, but my problem is that improving my skills is getting hard. The arrival to ...
2
votes
1answer
192 views

Hans Berliner and computers. Did he win the world ICCF championship using computer help?

Way back when, Hans worked for IBM. I met him at an IBM data center one time, but he worked in the Federal division and just used the center for a demo. I had known him from the Washington Chess ...
5
votes
2answers
730 views

What is a winning position in chess?

I am new to chess, so I have some difficulties on understanding some concepts. For example, by watching games usually I hear that a player has a winning position, or a better position respect to the ...
4
votes
3answers
208 views

How to play vs the 1…e6 and 2…d6 Pawn structure?

I've noticed that sometimes beginners play 1. e4 e6 2. d4 d6 as Black. [FEN ""] 1. e4 e6 2. d4 d6 As strange as it may seem, I find it difficult to play vs this neglected defense. Is it better to ...
2
votes
2answers
59 views

Is a wasted tempo with an early …a6 or …h6 by Black in the opening really compromising?

Is a wasted tempo in the opening for Black with an early ...a6 or ...h6 really dangerous? For example, in the following opening: [FEN ""] 1.e4 e5 2.Nf3 Nc6 3.Bc4 a6 (or 3...h6) Or in the following: ...
5
votes
6answers
273 views

What was the first “Opening Repertoire” book?

As title above states, what was/were the first "Opening Repertoire" book/s? I remember that opening books of the 1970s and early 1980s weren't actually repertoires for White or Black, but treatises on ...
1
vote
3answers
99 views

Winning as white is a struggle!

[Title "White to move"] [FEN "5r2/5q1k/6pp/1p2P3/1P2p2P/6RK/3Q1P2/8 w KQkq - 0 1"] I can’t seem to win here, no matter what I do. Is the position really that bad for me as White?
6
votes
1answer
139 views

Portisch-Radulov, Moscow 1977. Doesn't 16.c5 lose a pawn?

[title "Portisch-Radulov, Moscow 1977"] [fen "2r2rk1/pb1n1ppp/1ppqp3/8/2PPQ3/1P3NP1/P4PBP/R2R2K1 w KQkq - 0 1"] Doesn't 16.c5 just lose a pawn?
4
votes
1answer
133 views

Symmetrical opening

In Capablanca's "Chess Fundamentals" this symmetrical oppening is considerd. [fen ""] 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 The author then claims that a long analysis shows ...
3
votes
1answer
50 views

Are there any sources of massive transposition tables?

Do transposition databases exist the way tablebases do? Would an engine be able to take advantage of a pre-calculated TD? Is there a benefit to players when studying if they had access to pre-...
4
votes
1answer
100 views

What are the merits of Anand's exchange sacrifice in game 9 of 1995 World Chess Championship?

From various sources (some of which I have mentioned below) I have heard Vishy Anand's 27th move in game 9 of 1995 world chess championship match against Gary Kasparov , which was an exchange ...
4
votes
4answers
107 views

Ideas for giving chess lessons at school for differing levels of playing strength?

I have been running the chess club at the local high school, which I graduated from 40 years ago. As part of it, I have been giving free lessons. I have had several problems, and I am looking for ...

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