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GerdIsenberg GerdIsenberg Jan 10, 2013

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**[[Home]] * [[Engines]] * TDChess**

**TDChess**
a chess program by [[Jonathan Baxter]] based on [[KnightCap]] and its [[Temporal Difference Learning|TD learning]]. As mentioned by Jonathan, TDChess is about 5-6 times faster in [[Nodes per second|nodes per second]] than KnightCap. KnightCap had a really complicated [[Evaluation|evaluation]] which he had "dumbed down" a lot to get more speed. He also changed the [[Search|search]] a fair bit, including how it does [[Move Ordering|move ordering]] now on the basis of a [[Static Exchange Evaluation|static exchange evaluation]], and how [[Quiescence Search|quiescence]] works. The sorting of moves has become lot faster due to sorting on demand. Also the [[Book Learning|book learning]] is very different from the original KnightCap <ref>[[http://www.stmintz.com/ccc/index.php?id=42099|Re: TDchess discussion]] by [[Jonathan Baxter]], [[CCC]], February 03, 1999</ref>. TDChess won the [[NC3 1999]] [[Australasian National Computer Chess Championship]] <ref>[[http://www.stmintz.com/ccc/index.php?id=87251|Re: Australian-ch, questions !]] by [[David Blackman]], [[CCC]], January 09, 2000</ref>.

=See also=
* [[Various Classifications#Acronym|Acronym]]
* [[KnightCap]]
* [[Temporal Difference Learning]]

=Forum Posts=
* [[http://www.stmintz.com/ccc/index.php?id=41952|Re: u2600 Rating List -- Feb 1]] by [[Jonathan Baxter]], [[CCC]], February 01, 1999
> [[http://www.stmintz.com/ccc/index.php?id=42099|Re: TDchess discussion]] by [[Jonathan Baxter]], [[CCC]], February 03, 1999

=References= 
<references />
=What links here?= 
[[include page="TDChess" component="backlinks" limit="20" ]]
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