All Questions

0
votes
0answers
4 views

Strange Chess Book from World War Two

In about 2000 I was at a chess club in Sydney, Australia. I won't name it. As a chess history aficionado I got chatting to an old person. We discussed chess masters from the second world war era. ...
0
votes
0answers
6 views

Extracting “D” in SCID vs PC Analysis

Adding to this question, Scid PGN analysis using Stockfish, I ran a batch analysis using scid. Now, I want to extract only the "D" diagrams. How can I do this? Thank you for your advice.
4
votes
2answers
848 views

Losing queen and then winning the game

Many years ago, I was on a mountain with some people. I was very young then, between 15 and 17 years old, I think. Some older people came and one of them started to play chess with me. I cannot ...
3
votes
1answer
59 views

Chess principles for beginner [on hold]

I'm trying to put together a flyer of the golden rules in chess for kids that are absolute beginners. I noticed that they ran into the same trivial mistake that could be easy to fix with a simple ...
2
votes
1answer
68 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 ...
0
votes
2answers
489 views

Most possible movement by the losing side in a zugzwang position

Usually, in a zugzwang, the idea is to limit the number of moves that the opponent can make so that they will have to make a bad move. But what if we decided to give them lots of freedom, given that ...
5
votes
3answers
1k views

The difference between Rad1 and Rfd1

I've always wondered, what are the main tactical and strategic differences between Rad1 and Rfd1 (or Rad8 and Rfd8 as black)? I know it's a subtlety, but my guess is there are some common principles ...
3
votes
2answers
851 views

I played my first (rapid) tournament recently and I wanted to calculate my ELO

According to FIDE regulations I should calculate the average of my opponents and just plug it here: https://ratings.fide.com/calculator_rp.phtml. I scored 5/9 but a couple of players didn't have ...
3
votes
2answers
793 views

What is this opening trap called, and how should I play afterwards? How can I refute the gambit, and play if I accept it?

I played a short and funky game as Black on Lichess not too long ago, in which I fell victim to a gambit trap that caught me totally off guard. Due to the mental blow that I received, I didn't play ...
3
votes
1answer
161 views

Short and long term plans in a closed game in the Sicilian Defense

Today, I have played a game as Black. I reached this position, with Black to play: The position, as you can see, is closed. The truth is that I had difficulty finding a plan here, considering the ...
1
vote
1answer
55 views

Leela chess zero weight files

I'm using Leela chess zero for a couple of days and found a couple of weight files here. But what is the place to be for weight files? I can imagine that lc0's strength is determined by the weight ...
0
votes
1answer
99 views

Games that illustrate attacking themes

I have recently made an agreement with a bunch of highly interested but still inexperienced players and I will become their trainer. My plan is to have 1-2 meetings per week with them to talk about ...
3
votes
1answer
87 views

How does Allie's search algorithm work?

Allie is a strong engine that's looking competitive with the top ones (Leela Chess Zero and Stockfish). It's supposedly based off AlphaZero, but works differently. As far as I understand it, the most ...
1
vote
1answer
54 views

Enable pondering with Leela chess zero

I just got Leela Chess Zero up and running inside docker using this guide. Added a couple of weights from here Now, when I run leela $> lczero -w path/to/weight/file go info depth 16 nodes 435 ...
4
votes
3answers
184 views

Maximum number of ways to get out of check

What is the maximum number of legal moves in a legal position, given that the player is in check? It's easy to see that 43 is an upper bound. Let's suppose the white K is in check along a diagonal by ...
2
votes
1answer
83 views

How to use opening books on mac/linux

I would like to use opening books for my stockfish chess engine, but I'm not sure how to do this. As far as I understand stockfish doesn't support these, so I though I setup a system next to stockfish,...
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
68 views

Fairy endgame statistics for KDDDDvKN (D=dabbaba; '2,0' leaper)?

The dabbaba is a '2,0' leaper fairy piece, only able to ever reach a quarter of the squares on the board. According to the linked Wikipedia page, a quartet of them can apparently "easily" force mate ...
28
votes
7answers
9k views

King or Queen-Which piece is which?

I recently bought a set of wooden chess pieces, which I liked for its simplicity. I'm not sure, however, which one is supposed to be the king and which one is supposed to be the queen. I would say ...
1
vote
0answers
43 views

How to search for exact position (FEN) in CQL 5?

I am using CQL 5 port in SCIDvsPC 4.19, my basic working query in CQL search window currently looks like this: cql () initial {player white "Anand" result 1-0} How would one include FEN string ...
2
votes
1answer
55 views

How to use the Ponder option in stockfish / UCI

I'm trying to understand stockfish Ponder functionality. I'm very interested to let stockfish think when the opponent is thinking. From what I understand you can do it as follows $> uci $> ...
2
votes
0answers
88 views

Draw rates in classical chess between elite players?

I'm looking for detailed statistics exhibiting draw rate for elite players. I did find this and this publications, however, they only contain aggregated data for 2600+ players, and arrive at a figure ...
5
votes
2answers
155 views

Looking for an iPhone app for working out chess problems

I'm looking for an iPhone app that will allow me to set up a chess problem and work out its solution. I've seen apps that present me with a battery of chess problems but don't allow me to set up my ...
1
vote
1answer
51 views

Chessbase: how to efficiently use two reference database simultaneously

In Chessbase I use the Mega Database as my reference database when in a board. However, I recently downloaded a Correspondence database and would like to look up positions in it as well. Is there a ...
10
votes
2answers
954 views

Why is Na5 not played in this line of the French Defense, Advance Variation?

I find Na5 a good resource for black in this line of the french, profiting from the fact that white's b-pawn is binned to the bishop. As far as I can understand this position with my limited chess, I ...
2
votes
3answers
157 views

Ruy Lopez, Exchange Variation

[FEN ""] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 f6 Theory recommends 5. ... f6. Why? What is the specific reason behind this move? How this move helps Black? Other than 5. ... f6, are ...
8
votes
5answers
252 views

Why does Fishtesting test Stockfish against itself, not other engines?

As I understand the so-called Fishtesting, people write patches, then try the patches against the current version of Stockfish. If the new version performs better, it's promoted to be the main version;...
1
vote
2answers
77 views

Options for following the Norway Chess tournament live

I've heard a new tournament format is being adopted in the new series of Norway Chess, where each drawn classical game is followed by an Armageddon game in order to conclude with a decisive result for ...
8
votes
0answers
102 views

Historical origin of the queen as a chess piece

As far as I know, chess was introduced at Europe from Arabia by a Spanish king: Alfonso X. I recently read an article in Spanish press saying the queen was also introduced as a piece in Spain. The ...
3
votes
3answers
205 views

Sicilian Defence, Dragon Variation

[FEN ""] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. O-O-O d5 10. exd5 Nxd5 11. Nxc6 bxc6 12. Bd4 What is White's plan & idea behind 12. Bd4 move?
10
votes
4answers
4k views

Is White controlling this game?

Which side is in a better position here : white or black ? Is White controlling this game as all rook, knight, bishop, queen are in open position now ? What are the chances for black to come back ? [...
5
votes
0answers
80 views

Chess database software for variants

For regular chess, I use SCID and it works well. Database searches, position searches, player stats, and a nice compact file format (i.e. not PGN, which is inefficient and big.) Is there any similar ...
4
votes
2answers
139 views

What should I do when the announcement of a tournament is violated by the… chief arbiter?

Some months before an official national tournament is held, there is an announcement of it which contains who can participate, some rules (e.g. no draw offers until the 30th move), etc. Since I was ...
16
votes
2answers
2k views

What should the arbiter and what should have I done in this case?

Recently, an official (FIDE-rated), tournament was held, where I participated, too. At the last round, the most critical one, I was black and my opponent white. Suddenly, in the middle of the game, ...
-5
votes
3answers
184 views

What are the rules of chess in a nutshell?

I believe the question How to start learning chess? is actually two questions only one of which is a duplicate. This question is a fixed up version of it which asks only the other one of those ...
21
votes
5answers
6k views

Should an arbiter claim draw at a K+R vs K+R endgame?

I was asked for first time to help at a non federated tournament for kids to arbitrate their games, played at 30 minutes with no increment time. It was a scholar tournament and they made mistakes as ...
9
votes
3answers
766 views

Why is c4 bad when playing the London against a King's Indian?

Recently I (rated ~1900 "classical" on Lichess) played the following opening: 1.d4 Nf6 2.Bf4 g6 3.e3 Bg7 4.Nf3 O-O 5.Nbd2 d6 6.c4 [FEN "rnbq1rk1/ppp1ppbp/3p1np1/8/2PP1B2/4PN2/PP1N1PPP/R2QKB1R w KQ - ...
8
votes
2answers
190 views

Openings in King of the hill

As you probably know, "King of the hill" (KOTH) is a variant of chess where one can win either like in classical chess or by putting the king in the central squares, namely d4, e4, d5 and e5, by a ...
-3
votes
1answer
60 views

What is the realistic depth in chess we can set in graphical user interface when we have hardware with 16 core processor with 32 threads? [closed]

I want know the depth we can set in 16 core processor and 32 threads time can be maximum set to 15 seconds. Please share your thoughts and ideas.
1
vote
1answer
120 views

Which opening requires the longest amount of chess moves? [closed]

For most openings that I play (e4 and d4 openings) I have observed that they take exactly 4 moves (e.g. Giuoco Piano Game without variation). C50: Giuoco Pianissimo, Italian four knights variation ...
4
votes
1answer
180 views

Are there any attempts at writing Stockfish MCTS?

As of time of writing, there is one major traditional engine using Monte Carlo Tree Search for its search algorithm - Komodo. The MCTS version of Komodo started out weak but gained strength quickly, ...
4
votes
3answers
275 views

Can I reply to an illegal move with checkmate?

I was playing with my brother, and we both had equal number of pieces. He carelessly moved his king in the direction of my queen. I was about to checkmate my brother, but he told that my mating move ...
7
votes
2answers
331 views

What to do if opponent has poor hygiene?

Are there regulations on what to do when your opponent has poor hygiene and it negatively influences your performance? I do not want to be disrespectful or shame anyone, but bad breath or body odor ...
2
votes
6answers
254 views

What is the reason (if any) for 1.e4 c5 2.Nf3 d6 3.Nc3?

As title above, what is the point of playing 3.Nc3 (before d2-d4) after 1.e4 c5 2.Nf3 d6? Compared to the “normal” 1.e4 c5 2.Nf3 d6 3.d4? [fen ""] [Variant "Standard"] [ECO "B50"] [Opening "Sicilian ...
15
votes
3answers
4k views

Term for checking piece whose opponent daren't capture it

What if any, is the term for a piece whose owner gets a draw by keeping up a relentless series of checks with it -- a paradox being that even if this player puts it en prise, the opponent daren't ...
1
vote
1answer
156 views

What’s the point of early …a6 move in Queen’s Gambit Declined?

As title above, what is the point or the main idea of a very early ...a6 Pawn move in Queen’s Gambit Declined? I see that the move is fairly popular at GM and even top level.
0
votes
1answer
96 views

Could Ding win this endgame vs Carlsen?

Could Ding win this endgame vs. Carlsen (at this point in the diagram), in the game played yesterday at Lindores Abbey? Without using engines, it seems logical to me to play 41.Re3 or 41.Rd3 (instead ...
0
votes
1answer
91 views

Which chess courses should I start with? [closed]

I know the rules and played with my friends but without any knowledge of opening tactics etc. And all material I could find online was not in an ordered manner . So can you suggest some courses I can ...
-6
votes
2answers
169 views

Is it racist that white pieces move first in a chess game? [closed]

There is a movement in chess endorsed by several grandmasters called “MoveForEquality”, which revolves around the idea that the black pieces should start first instead of the white pieces. The ...
26
votes
2answers
7k views

How many chess players are over 2500 Elo?

They say that there are currently about 1500 grandmasters. I was wondering how many chess players currently have "grandmaster strength".

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