Questions tagged [database]

A set of chess games, distributed as a stand-alone product or as part of a bundle of chess software. For endgame databases, use the [tablebases] tag instead.

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34
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5answers
44k views

What is the average length of a game of chess?

I hope this is an appropriate question for this site as I've been wanting a reputable answer. Of course the length of games can vary wildly, but what is the expected number of moves until either a ...
19
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8answers
3k views

How can someone find their Morphy number?

The Morphy number is a measure of how closely a chess player is connected to Paul Morphy (1837–1884) by way of playing chess games. It's analogous to the Erdős Number for mathematicians. People who ...
14
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8answers
7k views

Database of every possible move in chess

Imagine that there is a chess database of every possible move and position. This database contains all possible moves from opening to end game. If I played using my intuition against a chess engine, ...
12
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1answer
8k views

What is Syzygy tablebases?

I just want to know in simple language exactly, What the Syzygy tablebases are, Why they are used, What are their advantages, disadvantages?
11
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4answers
13k views

Chess Problem Database with PGN or FEN

Is there a database of chess probpems that have the game or positions PGN and or FEN?
11
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2answers
877 views

How can I get a collection of chess games with a 'Greek gift' sacrifice?

I would like to make a collection of chess games that feature the 'Greek gift' sacrifice. There are few games on chessgames.com annotated with this sacrifice. I could find blogs with individual ...
10
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9answers
5k views

Are there any (free) games databases out there?

I am searching for a broad and extensive games database (i.e. games played between real players.) I can hardly seem to find any (even paid ones.) - However all sorts of chess software has these built ...
10
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3answers
1k views

How do people use chess software to improve their practical skills?

I'm currently using chesstempo to get better at tactics, reading books on strategy, analyzing grandmasters' games, etc. My current rating is around 1800 and I am planning to gain 200-300 points ...
10
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2answers
2k views

software to analyze my own database of games with statistics

I've been playing on lichess.org for my online games, and is the primary way I enjoy chess. One of the big reasons why I started playing on lichess.org was that they offer a simple way to export your ...
10
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3answers
1k views

Is it legal to use a chess database in correspondence chess?

Someone told me that you can use a chess database for correspondence chess, but this seems a little like cheating. Does anyone has some information on this subject.
9
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6answers
4k views

Is the Grand Prix Attack a poor response to the Sicilian?

The Grand Prix Attack begins 1. e4 c5 2. Nc3 Nc6 3. f4. It is an anti-Sicilian for white that is popular among club players because playing it requires memorizing significantly less theory than the ...
9
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3answers
3k views

Java Library for PGN parser

I would like to find a Java library that will allow me to read a PGN file that could contain several chess games, probably with comments inserted also. But, it won't be used to generate moves or play ...
9
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3answers
967 views

Unit Testing a chess board representation

So this is a bit of outlier question. I am writing a chess library, essentially from scratch. You can find much of the code here, with the intention of using it for a GUI and/or an engine. (The game ...
8
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2answers
2k views

Where can I find databases of tactical problems, categorized and ranked by difficulty?

I'm toying with the idea of building a tactical training tool. For my idea to work, I need positions that are categorized by motif and difficulty. A lot of tools seem to have this, and I doubt they'...
8
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2answers
493 views

What is the approximate number of unique positions added by each practical game of chess?

The average number of moves in a game of chess is about 40. This would be an average of about 80 positions in each game, but many positions are shared between games. More sharing occurs at the ...
8
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5answers
1k views

In an opening tree on ChessBase, how can we fix the statistics so that transpositions are not taken into account in the total number of games?

In an opening tree (also called "opening explorer" or "openings book") on ChessBase 12, here are the statistics that we get after 1. Nf3 c5 : So it seems that after 1. Nf3 c5 White will play 2. e4 93%...
8
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1answer
686 views

Pawn Structure database

I wonder if there is any existing or a way to create a chess database organised only according to pawn structures, where the notion of a pawn structures is crudely defined by GM Andrew Soltis in his ...
8
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2answers
712 views

Is the advance Caro-Kann becoming less popular?

In my own games I have seen fewer advance Caro-Kann games (1. e4 c6 2. d4 d5 3. e5) than the semi-open games (3. Nc3 or 3. Nd2) or the Botvinnik systems (3. exd5 cxd5 4. c4 or 2. c4). My questions ...
7
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3answers
186 views

Is there ant database that will return the reversed position?

I recently started an online game as White that began as follows. [FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"] 1. Nf3 f5 2. d3 Nc6 3. e4 e5 Here I deliberately decided to lose ...
7
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4answers
1k views

What is a chess database used for?

I frequently see advice about how to learn chess that include links to databases, or how to set them up, or a question here about Analysis where the accepted answer says to just add some stuff to your ...
7
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1answer
209 views

Database without rapid and blitz games

Last years Mega Database is full of rapid and blitz games taken from live broadcast boards. Is it possible to filter them out? Are there other bases that have games only from long time controls? ...
7
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1answer
213 views

Chess database software for variants

For regular chess, I use SCID and it works well. It has database searches, position searches, player stats, and a nice compact file format (i.e. not PGN, which is inefficient and big). Is there any ...
7
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2answers
484 views

Chessbase products - difference

Since the ChessBase website is rather unclear, I would like help regarding a few issues: I have a few questions. What is the main differences between the Big Database and the Opening Encyclopedia? ...
6
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3answers
108 views

Free opening name database?

Is there a database available that the gives you the names of common openings? "Ruy Lopez", "Sicialian", "Queens Gambit", etc. Ideally it would just be a simple map of the opening PGN to the common ...
6
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3answers
2k views

Is it possible to download a big txt file containing many openings?

I am creating a small chess engine for a CS class, nothing serious, i need to read the openings from a txt file or any format, i can go to websites like chessgames.com and download individual games, ...
6
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1answer
94 views

How do OTB games end up in databases?

How do games of players that are not so well known, or not huge events end up in Chessbase and other databases? What are the different ways that games are cataloged? If they are not playing on an ...
6
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3answers
395 views

Meaning of winning percentage

I was wondering about the exact meaning of winning percentage (white/draw/black) in database systems and how to use them for studying. How are move order variations taken care of? For instance, if I ...
6
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4answers
3k views

Where can I find a big chess database?

I am searching for a big chess games database, in PGN or CBH or SCID format. ICOfY Base is no longer available, I think. I found nothing in torrent sites (I am searching for something that is legal).
5
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6answers
240 views

In the opening stage, can we determine that one move is better than another by looking at winning percentage?

After 1.c4 Nf6 2. Nc3 g6, thousands of games have been played with the following two moves of white: 3.g3 and 3.e4. It seems that the winning percentage suggested that 3.e4 is clearly better than 3....
5
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2answers
816 views

Recommended software for ICCF play?

I am interested in playing correspondence chess online through the ICCF. It is my understanding that using computers is not only allowed, but almost mandatory. My question is: What all kinds of ...
5
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1answer
4k views

What's the difference between SCID and SCID vs PC?

I've got two files installed on my site from SCID & SCID vs PC - Scid vs PC-4.16.x64 & Scid-4.6.2. How are they different ? Or are they just the same ? Which one should I delete if it is a ...
5
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1answer
3k views

How to create your own opening book for your own chess engine?

I am currently working on a chess engine in Java. I am using the minimax algorithm with alpha-beta pruning to select the best move. However, it is inefficient to use the algorithm for selecting ...
5
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1answer
299 views

Is it still possible to develop new openings?

I have been using this opening that I accidentally started using a lot and then got good results in Blitz games. I'm almost sure it won't last a chance in standard games but it made me curious about a ...
5
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1answer
2k views

Why is it so hard to find a free downloadable chess database with older/historical chess games?

The best free, downloadable chess database I've found is Kingbase (http://www.kingbase-chess.net). It only has games since 1990. I also have the Android Chessbase Online app, which also appears to ...
5
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2answers
1k views

In ChessBase 12, when viewing an Opening Tree, why do all the games always stop near move 26?

I have ChessBase 12 64Bit. To create an Opening Tree I do the following steps: I click on "Mega Database 2014". I filter all the 5.8 millions games like I want (for example, taking only the games ...
5
votes
1answer
410 views

How do TWIC, chessgames.com, chessbase, etc. keep up to date with new games?

Most players use these services to keep up to date on the latest chess results, but how do these services source their databases? It would seem like a prohibitive amount of work to scrape results from ...
5
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2answers
3k views

Additional openings that are Chess Position Trainer compatible

I just started playing with Chess Position Trainer and I really enjoy the experience of playing through the "Closed Sicilian” repetoir that comes pre-loaded. The manual mentions that you can build ...
5
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0answers
454 views

How to use masks in scid for opening training [closed]

I've been trying to understand how the "mask" feature works in scid and how to use it for training opening lines. So far I did the following: open a database of master games in scid open the tree ...
4
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2answers
1k views

Game databases vs. various languages/character sets

How do people use chess software in large countries like China, India or Russia, if they don't speak English, and more importantly, if they don't know Latin letters? With unicode there's not big ...
4
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3answers
427 views

Is there an online database for the endgame KRPPKRP?

It was stated at this forum that the 7-men-endgames are still not available online. What about the special endgame KRPPKRP (Rook and 2 pawns against Rook and 1 pawn) ? It would be nice if the ...
4
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4answers
2k views

What is the best way to get games for the multiple editions of The Week In Chess?

I am looking for getting all games played in 2013 as quickly and painlessly as possible. A batch file to download many ziped pgn files would be non-ideal, but ok. I prefer the Week in Chess as a ...
4
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1answer
136 views

Is there a database of endgame positions with known perfect play?

Perfect play as in, it leads to checkmate in the least moves possible. Not just forced mates.
4
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1answer
735 views

Making sense of Scid vs. PC tree score statistics

I can't seem to figure out how to interpret the score statistics when browsing a chess database with Scid vs. PC. To give an example, the following is a position from the ICOfY chess database tree ...
4
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3answers
142 views

Are there any online public chess databases I can upload my own games to?

Does there exist any online public chess database that I can upload my own games to (so that others can look at them)? I know that sites where you can play online will store games (that you played on ...
4
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1answer
2k views

How do you convert a scid database into a pgn database?

So I got a big scid database and ScidvsMac. I would like to convert the complete database into a pgn database. So far I have only found out how to convert single games into pgn, something I'm not keen ...
4
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1answer
280 views

How can I use Scid to figure how I should divide study time for each opening line?

I have a database (Scid) that is mostly made up of games downloaded from TWIC. I know my rating (low 2000s). As an example, I want to play the Classical Sicilian as black. It can be reached either as ...
4
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1answer
457 views

Generate Simple Mate In 1 From Tablebases (for kids)

I was trying to find a kid's app for chess that has some incredibly simple problems. However, all the apps I found had rather tricky problems. So I thought I would download 3 piece table bases and use ...
4
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2answers
780 views

Where can I download (or buy) a database of Chess960 games?

Where can I download (or buy) a database of Chess960 games? Or at least find games from the major Chess960 tournaments? edit: If some is interested here are games I managed to find in internet.
4
votes
1answer
156 views

Professional Databases and Historical Games

I have tried to look for historical chess games (i.e. 19th century to early 20th century). I usually use Chessbase online database and chessgames.com. I have never paid for a database or database ...
4
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1answer
853 views

Chessbase vs Hiarcs for DB management

I am a Mac user and ChessBase is not available. Instead I purchased Hiarcs. I would like advise as to whether there's added value to ChessBase that should motivate me to install ChessBase on Parallels ...