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votes
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136 views

Games won by the stalemated player?

Here is a quote from Davidson, A short history of chess (Link), chapter 8, which I used in an answer to an earlier question. [...] In Italy, however, from the very beginning, players could not ...
7
votes
2answers
139 views

Does some GM or notable coach consistently employ “hand and brain” as a teaching tool?

I've seen some streamers do what they call "hand and brain", meaning that one person plays while the other chooses the kind of piece that they must move. All cases I've seen were intended for having ...
6
votes
0answers
41 views

Knowing when to play Nc6 vs Nbd7 in the Najdorf Sicilian as black?

I've been studying the Najdorf Sicilian for some time, and I generally have a good idea of where to develop my pieces to. My light and dark square bishops typically end up on e6 and e7, respectively. ...
6
votes
0answers
152 views

16 roses, 16x16 board; maximum double-attacked squares while all 256 squares are attacked at least once?

The rose is a piece that is best described as a "circular nightrider", able to reach up to 32 other squares from the center of a 13x13 area by making consecutive knight jumps in a rotating fashion in ...
5
votes
0answers
81 views

Move evaluation on armageddon games

I am wondering if there is a Stockfish-like evaluation of moves that could take in account armageddon rules, the rules being that you lose if you draw. I would imagine a strategy of just trading ...
5
votes
0answers
90 views

Full “reverse checkers” position in GM game with 12 or more pieces per player?

In yesterday's Tata Steel tournament in this game between Dubov and Artemiev this position was reached: [title "Dubov - Artemiev Tata Steel 2020"] [fen "r1r5/1p1q1pk1/2n1p1p1/2RpP2p/p2P3P/P1Q3P1/...
5
votes
1answer
146 views

Formal definition of corresponding squares

For (endgame) training purposes, I would like to write a python program (using python chess) that generates all pairs of corresponding squares in a pawn endgame. Following the definition from ...
4
votes
0answers
61 views

Infinite sequence of consecutive checks allowing more pieces (say 9+ queens)

This is a task related to this question: Theoretical limit for the number of consecutive checks?. By a sequence of consecutive check, what we mean is white giving check, black replying with a check, ...
4
votes
0answers
51 views

Mouse vs Touch performance for bullet chess

Though I have played chess for a long time, only picked up bullet chess very recently. And with better results than expected. However, as I play at random times I find myself playing in different ...
4
votes
0answers
57 views

Resources for annotated or commented games by level of audience

Similar questions have been asked before here or here. Still I think it would be more useful to have these resources listed by level. There is not much point for a beginner to listen to a GM ...
3
votes
0answers
88 views

How often do grandmasters fail to mate soon when mate in five or less is possible?

The recent question, How often do grandmasters miss checkmate? , turned out to be a bit broad. This question asks about a simple subset of that one, which I hope can be answered with some precision. ...
3
votes
0answers
46 views

Probability of given position/piece configuration

I'm currently working on an image based FEN generator. I found a paper doing the same and they have used Stockfish to calculate the most probable piece configurations. Now I wonder if Stockfish has ...
3
votes
0answers
31 views

Human assisted handicapped engine against engine, adjustable parameters

I am looking for software preferably local interface on windows, to play human+engine against engine with access to search parameters such as depth and "greed" or dismissal factor (controlling ...
3
votes
0answers
143 views

Online chess with full disclosure of name and FIDE ID

I would like to play online chess via an interface where name and FIDE number are disclosed, mainly because I believe that this discourages engine users. A few questions: I found the FIDE Arena ...
3
votes
0answers
158 views

Wrong perft result?

I'm writing a chess engine for fun. Currently I'm finishing writing the move generator. During the research I leaned about PERFT for debugging my software. Indeed, I found many bugs, some of them was "...
3
votes
0answers
210 views

Elo rating software with automatic random matchups

This question is not about chess per se, but I am looking for a software that could generate random matchups through a list of 200ish options/people, then I could choose the winner and it would rank ...
2
votes
0answers
81 views

Did Leela Zero miss a win in this position?

Did Leela Zero miss a win in this position from game 106 of the Computer Chess Championship, on move 83 with White to move? [FEN "8/2p1r3/2P4k/1P1pB2p/K2NbP1R/P5r1/8/8 w - - 0 1"] Here, ...
2
votes
0answers
38 views

Looking for an historic chess game

I'm looking for an historic chess game (don't remember if Capablanca or Kasparov) that both queens are face to face and either let pass the other one, almost for like 7 or 10 movements, in the middle ...
2
votes
0answers
32 views

Are there any cloud engine services solely 'pay per use'?

I'm looking for a chess cloud engine service where I only have to pay for the time I use. I thought chessbase.com provides that, but you have to get a premium membership first (as far as I understand)....
2
votes
0answers
23 views

Stockfish Transposition Table: 16 bit key equals 0 even if the key is found?

In Stockfish 11, they use the high 16 bits as key inside the cluster: const uint16_t key16 = key >> 48; // Use the high 16 bits as key inside the cluster This renders problem when key >> ...
2
votes
0answers
35 views

Multi-thread performance

I'm implementing multi-thread in my engine but I think I'm not getting the expected performance boost. Below are the results from the initial position to depth 10. The single thread version takes ...
2
votes
0answers
39 views

One board tournament

I work at a public library and we used to offer a monthly chess night, which is on hold right now due to lockdown regulations. We are planning to offer a small garden chess tournament outside the ...
2
votes
0answers
33 views

Will FIDE extend time limits on certain qualifications given the suspension of chess during Covid-19?

We already know that there has been very little FIDE rated chess played in April. There are a number of areas where FIDE has time limits. For example: Unrated players have 26 months to get results ...
2
votes
0answers
41 views

Where to find cross table for 1956 Thanksgiving weekend Eastern Open?

Berliner won this tournament. Chess life/review reported it. Newspapers reported it. The Eastern Open in 1956 was Thanksgiving weekend in the YMCA in DC. Berliner won it. Rossolimo, Lombardy, ...
2
votes
0answers
53 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....
2
votes
0answers
31 views

Where to find a list of the computer stored in the FICS Games Database?

According to the FICS Games Database there are currently 1,525 "computers stored". Such accounts are indicated by a "(C)" after the username. However, this suffix does not seem to be recorded in the ...
1
vote
0answers
47 views

Magic bitboards: My indexing doesn't seem to work!

I am beginning to understand magic bitboards. I have successfully implemented them with Rooks, and I am currently working with Bishops. The method is very similar though. Problem I have a bishop on g7 ...
1
vote
0answers
12 views

How to open .atbw files which has endgame tablebase?

I have downloaded a .atbw file from the archive of endgame tables for the atomic variant of chess from lichess tablebase I have downloaded this file, but have no way of reading it or accessing it as I ...
1
vote
0answers
17 views

Script for finding undefended pieces

I am looking for a script/code/CQL that searches for undefended pieces in a given position. I know that is possible to do it in the python chess library, but that is too complicated for me. Is there ...
1
vote
0answers
45 views

UCI protocol recent “official” specifications

I am looking for the most recent specification (offical would be perfect) of the UCI protocol. I found http://wbec-ridderkerk.nl/html/UCIProtocol.html but it is from 2004. The most recent I could ...
1
vote
0answers
29 views

ICC - How to Create/Custom Board and Pieces?

I wanted to be able to customize my board and pieces on possible blitzin from the ICC and ICC for Windows. Can anyone show me how?
1
vote
0answers
43 views

How can I set up xboard with an engine in Linux?

I'm trying to use xboard in Fedora and have only been able to get it to work under very specific circumstances. I installed it through my package manager and installed Stockfish as well. Without ...
1
vote
0answers
31 views

Arena Question-Can more than one match be played at same time in a tournament?

I am using Arena 3.5.1 version. Is it possible that more than one game can be played parallelly in the tournament? I want to start a Round-Robin tournament between a number of chess engines including ...
1
vote
0answers
23 views

ChessBase 15 Alternative Annotation Language

I am still investigating potential causes of the problem I have spotted at Comments from (commented !) games lost in "ChessBase to Scid on the go" conversion process So, in ChessBase 15, ...
1
vote
0answers
47 views

Comments from (commented !) games lost in “ChessBase to Scid on the go” conversion process

EDIT 1, 20/04/2020 In my question, I focused on the game Vachier-Lagrave vs Carlsen, Sinquefield Cup 7th, Saint Louis, 28/08/2019. It has annotations in english in my ChessBase database, and it has ...
1
vote
0answers
30 views

ChessBase15 “reference” search and behaviour regarding repetitions

Regarding this "classic": rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w - - 0 1 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bc1 Nf6 I wanted to see how many games were drawn ...
1
vote
0answers
126 views

Chessbase opening book (ctg) created from Chessbase database has slow access from Fritz or DroidFish

I want to build a Sicilian defense ChessBase (ct* format) opening book. I have the up-to-date Mega Database 2020 and I filter all games with an B20-B99 ECO, which gave me roughly 1.2M games. Then I ...
1
vote
0answers
121 views

Chess Problem: Reset The 50-Move Rule!

While chess problems and such are usually meant for Puzzling Stack Exchange, I thought that this one should be an exception since it’s more relevant IMHO. Reseting the 50-move rule, i.e. restart the ...
1
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0answers
88 views

What Sicilian Defence variation has the most similarity to the Dutch?

Given that in GM Simon William's book The Killer Dutch, Williams says that the Sicilian and the Dutch are mirror images of each other, as Williams states "If you look at the first move, you can see ...
1
vote
0answers
70 views

Bela Berger and Blindfold Chess: What do players “see” on the board?

I was looking at the interesting career of Bela Berger. On this oral history site, Bela Berger talks in an interview. Here is a quote from the site: "Berger, international chess master, speaks ...
1
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0answers
56 views

Are there studies showing that descriptive notation is easier to use for blindfold than algebraic notation?

What studies have compared effectiveness for thinking by chess players using descriptive vs algebraic notation?
1
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0answers
78 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:...
1
vote
0answers
32 views

Using Arena (Linux version) with unequal time limits

I use Arena with different engines to study different positions. One thing I haven't figured out is whether it's possible to use Arena to play against an engine where, for instance, I give the engine ...
1
vote
0answers
79 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.
1
vote
0answers
82 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 ...
1
vote
1answer
27 views

CCRL games in Chessbase's reference search : not enough grand master games

I downloaded a PGN of CCRL 40/15 games from http://www.computerchess.org.uk/ccrl/4040/CCRL-4040-commented.[1138203].pgn.7z and opened it in ChessBase, and converted it into a cbh. (I can even put ...
1
vote
1answer
169 views

Why did Puzzle Rush stop at the second fail?

I was playing the popular Puzzle Rush game on chess.com (3-minute version), and the game stopped when I missed the second puzzle (I had 8 seconds left on the clock). The statement is "Three strikes ...
0
votes
0answers
24 views

Xboard 4.9 installation

I have been trying to install XBoard4.9.1, but I have run into two problems. I have versiom 16 of Ubuntu. 1) I am trying to do it using the Ubuntu Sofware, but it only installs only version 4.8 of ...
0
votes
3answers
249 views

Chess Problem: White to play and mate in two

White's turn, checkmate in two moves [FEN "r1b2k1r/1p2bppp/p1B2q2/8/8/8/PPPQ1P1P/2KRR3 w - - 0 1"] How does White deliver checkmate in 2 moves?
0
votes
0answers
48 views

Are there any others sponsoring postal chess after FIDE USCF ICCF CCLA?

Is there a list of all the people sponsoring 'postal' chess? USCF and ICCF seem to be the two main ones. Does FIDE do it? Does CCLA still exist? I would guess that some web sites could be doing it ...

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