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'''[[Main Page|Home]] * [[Evaluation]] * [[Evaluation of Pieces|of Pieces]] * Bishop Pair'''
Since in the [[Initial Position|initial position]] [[Bishop|bishops]] stand on the [[Squares|squares]] of different [[Color|color]], throughout the game they control a disjoint sets of squares. This means that their power will never be wasted for carrying out the same tasks. On the other hand, lack of one bishop may introduce a [[Color Weakness|color weakness]]. Taking all those considerations into account, one might conclude that possessing both bishops is a desirable thing. The question is, however, how much they are worth.
[[Larry Kaufman]] proposed the value of half a pawn <ref>[[Larry Kaufman]] ('''1999'''). ''[https://www.chess.com/article/view/the-evaluation-of-material-imbalances-by-im-larry-kaufman The Evaluation of Material Imbalances]''. (first published in [https://en.wikipedia.org/wiki/Chess_Life Chess Life] March 1999, online version edited by [[Dan Heisman]])</ref>. It must be stressed, however, that this number is a part of a broader system, in which knights are stronger with many pawns on the board.
* [http://www.talkchess.com/forum/viewtopic.php?t=27616 Testing of Kaufman Material Values] by [[Mark Lefler]], [[CCC]], April 25, 2009 » [[Material]]
* [http://www.talkchess.com/forum/viewtopic.php?t=27842 Rook Pair Penalty, Knight Pair Penalty, Having a Pawn Bonus] by [[Mark Lefler]], [[CCC]], May 11, 2009
* [http://blog.abrok.eu/bishop-vs-knight/ Bishop vs. Knight | abrok.eu] by [[Roman Korba]], September 1, 2019
* [https://groups.google.com/d/msg/fishcooking/XzZX8CBgNtY/OJBqUYgXAQAJ A more generic Bishop evaluation] by apospa..., [[Computer Chess Forums|FishCooking]], May 25, 2020
=External Links=
* [https://en.wikipedia.org/wiki/Bishop_pair#Bishop_pair Bishop pair from Wikipedia]
* [https://blogs.kent.ac.uk/djb/2018/10/14/data-mining-with-pgn-extract/ Chess game data mining: exploring the advantage of the bishop pair with pgn-extract] by [[David J. Barnes]], [https://blogs.kent.ac.uk/djb/ kentdjb], October 14, 2018 » [[pgn-extract]]
=References=
<references />
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