Difference between revisions of "Bad Bishop"

From Chessprogramming wiki
Jump to: navigation, search
(Created page with "'''Home * Evaluation * Evaluation of Pieces * Bad bishop''' '''Bad bishop''',<br/> a bishop whose mobility is restricted by own pawns. As o...")
 
 
Line 21: Line 21:
 
=External Links=
 
=External Links=
 
* [https://en.wikipedia.org/wiki/Bishop_%28chess%29#Good_bishop_and_bad_bishop Good bishop and bad bishop from Wikipedia]
 
* [https://en.wikipedia.org/wiki/Bishop_%28chess%29#Good_bishop_and_bad_bishop Good bishop and bad bishop from Wikipedia]
* [http://www.chess.com/article/view/how-bad-is-a-bad-bishop How Bad is a Bad Bishop?] by [http://www.chess.com/members/view/energia Iryna Zenyuk], February 27, 2019, [http://www.chess.com/ Chess.com]
+
* [http://www.chess.com/article/view/how-bad-is-a-bad-bishop How Bad is a Bad Bishop?] by [http://www.chess.com/members/view/energia Iryna Zenyuk], [[Chess.com]], February 27, 2019
* [http://www.chess.com/article/view/the-bishows-show-bad-bishop The Bishow's Show: Bad Bishop] by [http://www.chess.com/members/view/energia Iryna Zenyuk], March 09, 2012, [http://www.chess.com/ Chess.com]
+
* [http://www.chess.com/article/view/the-bishows-show-bad-bishop The Bishow's Show: Bad Bishop] by [http://www.chess.com/members/view/energia Iryna Zenyuk], [[Chess.com]], March 09, 2012
  
 
'''[[Evaluation of Pieces|Up one Level]]'''
 
'''[[Evaluation of Pieces|Up one Level]]'''

Latest revision as of 17:51, 25 February 2021

Home * Evaluation * Evaluation of Pieces * Bad bishop

Bad bishop,
a bishop whose mobility is restricted by own pawns. As opposed to normal mobility problems, this situation is semi-permanent (more so if the position is blocked), which fact justifies singling it out as another evaluation term. Bad bishop is not such a liability if it is placed outside the pawn chain (Bf5 in the Slav). For that reason some programs, like Crafty, score a bishop as bad only if its forward mobility is impaired.

For a bitboard-based program a feasible approach would be to create an array of 64 bitboards, indexed by a Bishop's position, and marking the pawn positions which would make our bishop bad.

See also

Publications

Forum Posts

External Links

Up one Level