Asymmetric+evaluation

toc =See also=
 * Home * Evaluation * Asymmetric evaluation**
 * [[image:HelmedHeadNo2HenryMoore.JPG link="https://commons.wikimedia.org/wiki/File:%27Helmet_Head_No._2%27,_bronze_sculpture_by_Henry_Moore,_1955,_Art_Gallery_of_New_South_Wales.JPG"]] ||~ || Some programs score certain terms **differently** for the side they are playing and for the opponent. Most often the big terms, like king safety, passed pawn evaluation or mobility are scaled in some way. Whilst it might be argued that this idea runs counter the definition of chess as a zero-sum game, it also allows greater freedom in shaping the program's playing style. Richard Lang's programs were famous for their asymmetry in evaluation and forward pruning, which emphasis safety (rules like 'do not start a wild attack, but worry a lot if the opponent does so') . ||
 * Henry Moore - Helmed Head N° 2 ||~ ||^ ||
 * Odd-Even Effect
 * Opponent Model Search
 * Parity Pruning
 * Tempo

=Publications=
 * Ingo Althöfer (**1992**). //On Asymmetries in Chess Programs.// ICCA Journal, Vol. 15, No. 1
 * Javier Ros Padilla (**1994**). //Estimating Asymmetry and Selectivity in Chess Programs//. ICCA Journal, Vol. 17, No. 1

=Forum Posts=

1997 ...

 * [|asymmetry] by Andrew Tridgell, rgcc, August 12, 1997 » KnightCap, Parity Pruning
 * [|Re: Junior's long lines: more data about this...] by Don Dailey, CCC, December 26, 1997
 * [|Genius' asymmetric-search by example: TRY yourself] by Thorsten Czub, rgcc, December 30, 1997
 * [|Asymetric king safety] by Tom King, rgcc, March 13, 1999

2000 ...

 * [|Parity of depth level and evaluation] by Claude Le Page, CCC, June 13, 2005

2010 ...

 * [|evaluating color agnostic terms] by Alvaro Cardoso, CCC, October 15, 2013
 * [|Different eval for white/black] by Matthew Lai, CCC, January 05, 2015
 * [|Asymmetrical evaluation] by Laurie Tunnicliffe, CCC, May 24, 2016 » Odd-Even Effect
 * [|Symmetrical evaluation and endgame] by Hamfer, OpenChess Forum, June 02, 2016 » Tempo

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