I have collected over 540 000 fresh tournament chess games (pgn downloads) from the last five years for you (till June 2016) and show you how to build your personal database using a free database software program called SCID vs PC (free). Read more about SCID vs PC
Shane's Chess Information Database (SCID) was originally written by Shane Hudson, but has received strong contribution from others.
The author of the book is the Grandmaster and honored Russian coach who headed the All-Russian chess school. At his lessons Alexander Panchenko, following the advice of world champions J.R.Capablanka and V.V.Smislov, placed the highest emphasis on endgame (without neglecting the other stages of a chess game, for sure). The endings are a small selection from a series of thirty books on chess players as endgame. Endgame.pgn search, download with torrent files free full cracked downloads. Endgame.pgn torrent download, endgame.pgn free download with pass keys. Endgame.pgn rar. Philidor played the first recorded endgame. Lasker used endgame technique as a weapon. Nick Pert Killer Endings - Part 2: Intermediate to Advanced Chess players have a tendency to focus mainly on improving their opening play but one must not forget that many games are actually decided in the endgame. Ginger GM has released two new endgame DVDs that will enhance a player's performance in this particular area of the game. Using his wealth of knowledge and expertise, Grandmaster.
With SCID vs PC you can create huge databases without having to buy expensive chess database software like ChessBase Mega Package.
You can also run chess engines and play games against the computer. However in the beginning SCID seems to be complicated to use it, so I will explain some important features that you must know to be able to build your database.
I have to charge you $35 for the pgn downloads, because it has been a lot of work to build the pgn file with over 540 000 chess games, as you can surely imagine.
You can use my pgn database with SCID vs PC and build your personal database with it.
How to use Modern Database?
To open the pgn file Modern Database to see the chess games in it, you need a chess database like SCID vs PC (free, see this page below), or, for example,
ChessBase Mega Package or as alternative the Russian database Chess Assistant PRO with Houdini PRO (DVD) or the interface of a commercially available chess program like Fritz Chess Software that has a database included to which you can add my Modern Database.
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Install Chess Database
Download SCID vs PC (free)
Make sure you download the right version. If you have a Windows 64 bit PC, then download the 64 bit version.
SCID vs PC creates an icon on your desktop. See below.
Find, open and install SCID on your computer. It will create an icon on your PC as shown below.
Create NEW Database Name
You have to start from scratch and create a new database. Click on FILE/NEW and give your database a name that you like. (example: ModernDatabase) See image below.
You need this new database to import (copy) your pgn games into it later on. If you would simply open any pgn file instead that contains chess games then you will not be able to delete or edit any games because your pgn files are classified read-only and cannot be changed. This means that you will not be able to change anything in the pgn files you have, but only in the database. For that reason you have to create first a new database that has three different file endings to be able to handle complex editing procedures and it does not have the file ending pgn.
This newly created database structure is necessary to be able to edit or delete any games in the future and import new pgn games into it from other pgn files.
So your newly created database will have no games in it in the very beginning.
Open any of your created Databases
You can create different databases. For example, you might create a database where you will import only old chess games played by old chess masters and call it, OldBase.
To open any Database click on FILE/OPEN. See below.
Copy PGN Games into your Database
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To fill your database with chess games go to TOOLS/IMPORT PGN FILES. Then find your PGN files on your computer and import (load) them into your database. See image below.
Loading PGN Files
When PGN files are loaded in the database then you will see this small window below which shows the loading procedure.
When all games of the PGN File are loaded, then this window will show the games that have technical errors in it. See image below.
You should find and delete or repair these games in your database (not in PGN File as this is read-only).
Just lookup the number of a game that has errors in it, then find the number of this game in the database and rightclick mouse and click delete.
This will NOT delete the game immediately, but simply will mark (flag) it. After this, click on COMPACT. This will fix those 'deleted' games in the database for later deletion in the MAINTENANCE Window.
As you can see above there are some games that have errors and should be deleted or repaired.
List of Games
To see your listed games in your database OR in your PGN files click on LIST OF GAMES. Before you do this you have to go to FILE/OPEN and open up a database or a PGN file. See image below.
How to Search for Positions
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Congratulations to Bojun Guo (aka noobpwnftw) and Ronald de Man (aka syzygy) for completing the first free 7-piece tablebase and generously sharing it with the world! Lichess now provides online access on the analysis board and in studies, practice against tablebases, a public API and a mirror for downloading the full tablebase files.
How to use tablebases on Lichess?
In endgame positions the opening explorer is replaced by a tablebase explorer. During analysis, click the book icon on the right side of the board to open it. It will show objective evaluations for every move in the position, giving you the best lines.
Tablebases are also used in applicable lessons and when practising against the computer.
Can you finish this endgame as precisely as the World Champion?
What is DTZ?
DTZ means distance to zeroing of the counter for the 50-move drawing rule. Syzygy tablebases do not aim for the fastest way to mate, but rather for the fastest way to make a winning capture or pawn move or give mate. This can be a bit unintuitive, but it allows perfect play (with regard to outcome) even under the 50-move rule.
What did it take to generate the tables?
Bojun Guo (also one of the top contributors of computing power for Stockfish testing) started generating the first tables in May, expertly managing two machines, one of them with 384 threads (8x Intel Xeon Platinum 8168) and more than 1 TB of RAM (later distributed differently).
Effectively using a huge number of threads is difficult. You can read up on the technical discussion here and here. Half-way into the process, Ronald de Man (the original author of the Syzygy tablebase generator) managed to significantly speed up generation of pawnless tables by making it NUMA-aware. He also fixed any other issues that occured while generating 7-piece tables.
The project was completed today, after exactly 5 months.
What is the longest 7-piece endgame?
In this position (already discovered 2012 by the Lomonosov team) Black can hold on for 1034 half-moves until White manages to make a winning capture.
This requires a small extension to the Syzygy table format: With 6-piece endgames 8 bits were sufficient for the largest entry in the DTZ map. Now wider DTZ values are required.
Surprisingly this extension is even required for endgames with pawns. Here it takes 656 half-moves to arrange a winning pawn advance.
There is also a list of longest endgames with basic stats for each material configuration.
How large is the tablebase?
The number of unique legal 7-piece positions is 423,836,835,667,331. Syzygy tablebases store all their information in 18.4 TB, so at around 0.35 bits per position. This is much more compact than the proprietary 100 TB Lomonosov tablebases.
How to use Syzygy tablebases offline with Stockfish?
The tablebase comes in seperate tables, 2 files per material configuration.
WDL tables (*.rtbw) store the outcome of positions, e.g. if a position is winning. An engine will use this very frequently to decide which endgames to aim for. WDL tables should be stored on the fastest disk (preferably SSD) you have.
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DTZ tables (*.rtbz) tell the engine how to finish the endgame once it is on the board. They are optional, but required to reliably convert complicated endings.
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Pieces | Endgames | WDL | DTZ | Total |
---|---|---|---|---|
3-5 | 145 | 378.1 MiB | 560.9 MiB | 939.0 MiB |
6 | 365 | 67.8 GiB | 81.4 GiB | 149.2 GiB |
7 | 1001 | 8.5 TiB | 8.3 TiB | 16.7 TiB |
Then download the tables from one of the mirrors.
- http://oics.olympuschess.com/tracker/index.php (BitTorrent tracker, only 6 pieces)
- http://tablebase.sesse.net/ (fastest mirror, EU)
- https://tablebase.lichess.ovh/tables/ (mirror hosted by Lichess, EU)
- ftp://ftp.chessdb.cn/pub/syzygy (original source of 7-piece tables, China)
Finally set the SyzygyPath option in Stockfish. You can separate multiple paths with ; on Windows or : on Unix-based systems. Currently the development version of Stockfish is required for 7-piece tablebase support.
How to use Syzygy tablebases programmatically?
As a developer you may be interested in probing tablebases via a public HTTP API (feel free to suggest improvements), in C with the original probing code or a library (currently 6 piece only), in C++ by adjusting Stockfish, in Python or in Rust.
Why generate tables for 6v1 endgames?
While the outcome of such positions is rather obvious the exact distribution of the DTZ values may still be of theoretical interest. These tables were also a good warm up: Relatively fast to generate, no need for wide DTZ values, and making up only 1% of the entire set (trivial endgames compress very well). Finally, since Lomonosov skipped these endgames, and while we are splitting hairs, this makes Syzygy the first truly complete 7-piece tablebase.