19
votes
Where did ChatGPT get this game from?
If you've attempted to play chess against ChatGPT, you quickly learn it doesn't know how to play, and constantly makes illegal moves. So I'm puzzled how it came up with a plausible game of chess. I ...
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17
votes
Where did ChatGPT get this game from?
As this interesting video which explains how ChatGPT (and similar AIs) works, says about ChatGPT's problems when generating "answers":
Hallucinations: model might make up wrong facts
And ...
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16
votes
Accepted
What are the biggest free chess game databases? Is it legal to download games from them?
FICS database
Lichess database
Million base 2.2
PGNMentor
Is it possible to use this information for my own purposes
Absolutely! Nobody has the copyright. Enjoy your machine learning adventure!
- 22.4k
12
votes
How do people use chess software to improve their practical skills?
I know that I, for one, have used them to tell me why a line not mentioned in the books is bad. Most books show you all viable lines of play and maybe a few dubious ones, but a book can't mention all ...
- 441
12
votes
Where did ChatGPT get this game from?
ChatGPT is a language predictor - it doesn't "know" anything but what words are likely to come next.
What's interesting is that the Detector at https://openai-openai-detector.hf.space/ ...
- 383
11
votes
Accepted
How can I get a collection of chess games with a 'Greek gift' sacrifice?
Something which might help here is Chess Query Language. Just like SQL does for relational databases, CQL can search in a database of chess games for positions/games which match certain criteria.
I ...
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11
votes
Accepted
Is testing an opening by having a computer play against itself viable?
If you're concerned about whether an opening is objectively good, then using computer games is a good approach. Computers don't play perfectly, but they are by far our best option. You could also ...
- 19.8k
10
votes
Java Library for PGN parser
After reading a bunch of open source code, I just found out that most of them are relying on Chesspresso which is a solid Java Chess library that can handle move validation, PGN parser (what I was ...
- 311
10
votes
How can someone find their Morphy number?
You'd have to find a list of players Morphy has played. Then, you'd research as many players who played each of those players. This can all be done by searching by player in a large database. ...
- 19.8k
9
votes
Accepted
Are there any (free) games databases out there?
There is a pretty big one if you are willing to spend some 40 euro.
This (Million Base 2.2) is the biggest free database I know of.
- 19.2k
9
votes
Accepted
Generalise 'grandmaster games (...) castle opposite sides and the queenside players loses?' to finding games based on themes
Question: Is there a way I can search this up myself?
Yes. There is a tool called CQL (Chess Query Language) which allows you to search a PGN file database of games for games that match some set of ...
- 94.5k
8
votes
Accepted
What's the difference between SCID and SCID vs PC?
Shane's Chess Information Database (SCID) is a powerful Chess Toolkit, with which one can create huge databases, run chess engines, and play casual games against the computer or online with the Free ...
- 4,434
8
votes
Accepted
Is there a database of endgame positions with known perfect play?
Yes, it is call Lomonosov table : link
It is all the positions with 7 or less pieces and the whole answer is known.
- 441
8
votes
How can someone find their Morphy number?
I never heard of the 'Morphy number' until I read your post. I found that my Morphy number is 5. Here is how I did it.
I started with Wikipedia
After looking at the list I realized that my best ...
- 5,096
8
votes
Accepted
Find an opening based on the position of one player only
Using my free, open source pgn-extract program you can specify a grep-like FEN pattern to be searched for in a PGN file of games. The program comes with a file of opening lines (eco.pgn) so a search ...
- 1,761
8
votes
Find an opening based on the position of one player only
As kentdjb already noted, there is no variation with that exact position which has an ECO entry.
But it happened in sub lines of some ECO codes. I did a search on this database (only contains GM games ...
- 1,005
7
votes
Are there any (free) games databases out there?
These databases could be interesting for you:
The Week In Chess (=TWIC) (free): updated every week, PGN format
Mega Database of ChessBase (commercial): requires the ChessBase gui
Huge Database of ...
- 5,516
7
votes
Accepted
Personal chess database
SCID does everything you are looking for, it's great chess database software.
- 27.7k
7
votes
Accepted
What is a chess database used for?
what is that database, really?
A chess database is basically a collection of chess games, i.e. a collection of moves with metadata such as player names, date, Elo rating of players, place, opening ...
- 20.7k
7
votes
Game databases vs. various languages/character sets
You don't need good English to play chess...
https://tieba.baidu.com/p/5369964903
is Baidu (China's larger search engine) page on chess.
Do you see? The Chinese know Nxf2, Qxe3+, Bg3.
The ...
- 22.4k
7
votes
Accepted
Free opening name database?
There is an "eco" GitHub project available which I believe, based on the name, is based on the Encyclopedia of Chess Openings.
This project used to provide a JSON file with all openings, but now ...
- 10.5k
7
votes
Accepted
What are the percentage rates for each promotion type?
Here are the percentages for each promotion type according to different sources:
|Promotion type | ChessBase | TWIC | ICCF |
--------------------------------------------
| Queen | 96.9 |...
- 3,333
7
votes
Accepted
FIDE database used for calculating current ELO
Is there somewhere the database FIDE use for calculating ELO rating of players?
Yes and No.
FIDE have such a database and they let us see some of the data but not in an easily downloadable form. For ...
- 94.5k
6
votes
What is the average length of a game of chess?
We can make a small analysis from a theoretical point of view:
Let us call 'n' the number of pieces on the board.
In a match between players of similar strength, it is expected to find ~n/2 pieces ...
- 429
6
votes
Is there an online database for the endgame KRPPKRP?
All of the Syzygy tablebases are available here: https://syzygy-tables.info/
These cover all endgames up to 7-man, and provide WDL (win-draw-loss) and DTZ (distance to zeroing move) data. Syzygy ...
- 1,679
6
votes
What are examples of grandmaster games where both Black and White castle opposite sides and the queenside players loses?
That's a pretty typical scenario, you'll find a lot of examples if you search for games in the sicilian opening.
[Event "Sarajevo"]
[Site "Sarajevo BIH"]
[Date "2000.05.29"]
[EventDate "2000.05.17"]
[...
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6
votes
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 even know Latin letters?
If they play FIDE rated ...
- 94.5k
6
votes
Recommended software for ICCF play?
The best engine to use for analysis is most likely stockfish. Works with multiple procs, probably the strongest tactically. And as a bonus, it's free (but you should get a good UCI. I use Fritz UCI ...
- 376
6
votes
Chess Problem Database with PGN or FEN
http://gorgonian.weebly.com/pgn.html
https://exeterchessclub.org.uk/downloads (in chessbase format)
Exeter chess club has many other valuable resources.
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