Answers.Body: <p>Endgame table base is a huge tree of information, which solves the game of chess, with minimum number of pieces. We have reached up to 7 pieces up till now and the best quality tablebase is maintained by Ronald de Man at <a href="https://syzygy-tables.info/" rel="nofollow noreferrer">syzygy endgame tables</a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-06-23T11:32:03.257Z
Answers.LastActivityDate: 2020-06-23T11:32:03.257Z
Answers.UserDisplayName: abunickabhi
Answers.Body: <p>All the previous answers are correct. One interesting fact is the file size of tablebases grows enormously with each piece added.</p>
  <ul>
  <li>5-Piece TB = 939 MB</li>
  <li>6-Piece TB = 150.2 GB</li>
  <li>7-Piece TB = 140 TB</li>
  <li>8-Piece TB = &gt;5 PB (estimated).</li>
  </ul>
  <p>Chess will be &quot;solved&quot; when we have a 32-piece TB. :)</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-23T12:53:13.887Z
Answers.Text: How will we store the 32-piece "opening database", though?
Answers.UserDisplayName: TwilightSparkle
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Answers.CreationDate: 2020-08-24T13:30:57.107Z
Answers.Text: Easy, turn all matter in the universe into computronium. :)
Answers.UserDisplayName: digitalgravity
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-24T13:39:42.447Z
Answers.Text: I suppose that's not enough
Answers.UserDisplayName: TwilightSparkle
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Answers.CreationDate: 2020-08-20T01:51:40.767Z
Answers.LastActivityDate: 2020-08-20T01:51:40.767Z
Answers.UserDisplayName: digitalgravity
Answers.Body: <p><a href="https://en.wikipedia.org/wiki/Endgame_tablebase">Endgame tablebases</a> are essentially databases containing known endgame positions that have been “solved”, so to speak. That is, every position in an endgame tablebase will have a corresponding result which will either be a win for white, a win for black, or a draw (assuming perfect play). They are used by chess engines because it is much more efficient for the computer to look up an endgame position in a database to get the result of the endgame rather than exhausting all the possible variations to determine the result. </p>
  
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Answers.CreationDate: 2015-01-23T15:46:51.403Z
Answers.Text: Are there any sites you could recommend?  TIA
Answers.UserDisplayName: paul delasaux
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-01-24T01:04:34.217Z
Answers.Text: @pauldelasaux I don't know of any sites but I do know that [Stockfish](http://stockfishchess.org/) comes with one (that's how it evaluates many simple endgames). If you don't have an engine on your computer yet then I highly recommend getting Stockfish because it is excellent (and free!).
Answers.UserDisplayName: sardoj
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Answers.CreationDate: 2024-02-23T00:43:07.880Z
Answers.Text: Are you sure it is only known endgame position that have been solve?  It actually is constructed from logically confirmable checkmates positions (i don't know the extent of that set of FEN or EPD), and using retrograde scheme or some computational theorem to find all the mobility rule compatible positions backward that can lead as best play to such mate.  I am missing things here. but they might not know which of those mates are even legal continuations other than those impossible ever placements.
Answers.UserDisplayName: dbdb
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Answers.CreationDate: 2015-01-23T03:09:38.440Z
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Answers.UserDisplayName: sardoj
Body: <p>I've been reading and enjoying the site immensely.</p>
  <p>What is the &quot;Endgame Tablebase&quot;?  I see it referenced frequently.</p>
  
Tags: <terminology><tablebases>
Title: Endgame Tablebases-What are they?
ThreadText: # Endgame Tablebases-What are they?
  
  (Asked by: username_0 on 2015-01-23)
  
  I've been reading and enjoying the site immensely.
  
  What is the "Endgame Tablebase"? I see it referenced frequently.
  
  **Tags:** terminology, tablebases
  
  
  ---
  
  ## 3 answers
  
  ### Answer by username_4 on 2015-01-23. Score: 9 | Accepted answer
  
  [Endgame tablebases](https://en.wikipedia.org/wiki/Endgame_tablebase) are essentially databases containing known endgame positions that have been “solved”, so to speak. That is, every position in an endgame tablebase will have a corresponding result which will either be a win for white, a win for black, or a draw (assuming perfect play). They are used by chess engines because it is much more efficient for the computer to look up an endgame position in a database to get the result of the endgame rather than exhausting all the possible variations to determine the result.
  
  > **Comments:**
  > **username_0**: Are there any sites you could recommend?  TIA  
  > **username_4**: @pauldelasaux I don't know of any sites but I do know that [Stockfish](http://stockfishchess.org/) comes with one (that's how it evaluates many simple endgames). If you don't have an engine on your computer yet then I highly recommend getting Stockfish because it is excellent (and free!).  
  > **username_5**: Are you sure it is only known endgame position that have been solve?  It actually is constructed from logically confirmable checkmates positions (i don't know the extent of that set of FEN or EPD), and using retrograde scheme or some computational theorem to find all the mobility rule compatible positions backward that can lead as best play to such mate.  I am missing things here. but they might not know which of those mates are even legal continuations other than those impossible ever placements.  
  
  ---
  
  ### Answer by username_1 on 2020-06-23. Score: 3
  
  Endgame table base is a huge tree of information, which solves the game of chess, with minimum number of pieces. We have reached up to 7 pieces up till now and the best quality tablebase is maintained by Ronald de Man at [syzygy endgame tables](https://syzygy-tables.info/)
  
  
  ---
  
  ### Answer by username_2 on 2020-08-20. Score: 2
  
  All the previous answers are correct. One interesting fact is the file size of tablebases grows enormously with each piece added.
  
  * 5-Piece TB = 939 MB
  * 6-Piece TB = 150.2 GB
  * 7-Piece TB = 140 TB
  * 8-Piece TB = >5 PB (estimated).
  
  Chess will be "solved" when we have a 32-piece TB. :)
  
  > **Comments:**
  > **username_3**: How will we store the 32-piece "opening database", though?  
  > **username_2**: Easy, turn all matter in the universe into computronium. :)  
  > **username_3**: I suppose that's not enough  
  
  ---
  
  