Answers.Body: <p>Chess engines use centi-pawns.</p>
  
  <p><a href="https://chessprogramming.wikispaces.com/Centipawns" rel="nofollow">https://chessprogramming.wikispaces.com/Centipawns</a></p>
  
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Answers.CreationDate: 2014-11-08T13:49:14.777Z
Answers.Text: Worth noting that all engines (at least those supporting the UCI protocol or similar) report their scores in centipawns in order to comply, but that doesn't _necessarily_ mean that they don't compute lines internally with greater precision.
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Answers.Text: It's pointless to compute with greater precision. All engines use integer. Look at the Stockfish source code and you will see that I'm correct.
Answers.UserDisplayName: SmallChess
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Answers.CreationDate: 2014-11-09T09:50:39.480Z
Answers.Text: I agree that Stockfish does, but it's not inconceivable that some other engine could find a use for that precision. As mentioned above, an earlier version of Stockfish used 1/256.
Answers.UserDisplayName: DTR
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Answers.Text: Which engine uses that? Houdini? Komodo?
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Body: <p>I've heard that the most common evaluation unit is 1/100 of a Pawn. But some engines use 1/1000 of a Pawn as their evaluation unit.</p>
  
  <p>I've also heard that Stockfish used 1/256 of a Pawn as its evaluation unit (although it was 5 years ago, maybe it has changed today).</p>
  
  <p>So what about the strongest and best-know chess engines: Komodo, Houdini, Fritz, Hiarcs, Gull, etc... what evaluation unit do they use?</p>
  
Tags: <engines><stockfish><programming><point-value><fritz>
Title: What fraction of a Pawn do the most powerful chess engines (Komodo, Stockfish, Houdini, Fritz, Hiarcs, Gull, ...) use as their evaluation unit?
ThreadText: # What fraction of a Pawn do the most powerful chess engines (Komodo, Stockfish, Houdini, Fritz, Hiarcs, Gull, ...) use as their evaluation unit?
  
  (Asked by: username_0 on 2014-10-09)
  
  I've heard that the most common evaluation unit is 1/100 of a Pawn. But some engines use 1/1000 of a Pawn as their evaluation unit.
  
  I've also heard that Stockfish used 1/256 of a Pawn as its evaluation unit (although it was 5 years ago, maybe it has changed today).
  
  So what about the strongest and best-know chess engines: Komodo, Houdini, Fritz, Hiarcs, Gull, etc... what evaluation unit do they use?
  
  **Tags:** engines, stockfish, programming, point-value, fritz
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2014-10-09. Score: 2
  
  Chess engines use centi-pawns.
  
  <https://chessprogramming.wikispaces.com/Centipawns>
  
  > **Comments:**
  > **username_2**: Worth noting that all engines (at least those supporting the UCI protocol or similar) report their scores in centipawns in order to comply, but that doesn't _necessarily_ mean that they don't compute lines internally with greater precision.  
  > **username_1**: It's pointless to compute with greater precision. All engines use integer. Look at the Stockfish source code and you will see that I'm correct.  
  > **username_2**: I agree that Stockfish does, but it's not inconceivable that some other engine could find a use for that precision. As mentioned above, an earlier version of Stockfish used 1/256.  
  > **username_1**: Which engine uses that? Houdini? Komodo?  
  
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