Battery

toc =Evaluation Considerations= Like other X-ray related tactics, considering batteries may be subject of king safety terms and static exchange evaluation. A standard pattern in mate at a glance is a battery of bishop / queen or rooks / queen, where the queen attacks a square or opponent piece adjacent to the opponent king, exclusively defended.
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 * [[image:320px-Youghal_Battery.JPG link="https://en.wikipedia.org/wiki/File:Youghal_Battery.JPG"]] ||~ || A **Battery** in chess is a formation of two or more sliding pieces with common attacking directions along the same rank, file, or diagonal. Their attacks conjoin on one or more target squares in one ray-direction, attacked at least once directly, and one or more times indirectly. A battery is a chess tactics related term, often motivated by strategic pawn structure related considerations. In the middlegame, a (rook) battery attacking a weak opponent pawn on a half-open file is a common motive. The German chess term //Drucksäule// (tower of strength) refers to own, apparently weak pawn support from its rearspan, to force a lever and pawn exchange to (half-) open a file. ||
 * Battery of [|English cannon] ||~ ||^ ||

Whether a (rook-) battery deserves a general bonus in evaluation is debatable, assuming there are already singular bonuses for occupying open- or half-open files or the seventh rank respectively. Larry Kaufman even proposed a rook-pair penalty with respect to a bishop pair :

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=See also=
 * Discovered Attack
 * Discovered Check
 * Pin
 * Sliding Piece Attacks
 * SEE - The Swap Algorithm
 * Skewer
 * Static Exchange Evaluation
 * X-ray
 * X-ray Attacks (Bitboards)

=External Links= > feat. [|Mieczysław Górka], [|Janusz Grzywacz], [|Jarosław Śmietana], [|Zbigniew Wegehaupt] > media type="youtube" key="6kbO9pqxCUc" width="480" > feat. Miroslav Vitouš, Jack DeJohnette, Chick Corea > media type="custom" key="24759320"
 * [|Battery (chess) from Wikipedia]
 * [|Alekhine's gun from Wikipedia]
 * [|Battery from Wikipedia]
 * Zbigniew Seifert - [|Impressions] (John Coltrane), from [|Kilimanjaro], live at [|Club Pod Jaszczurami], [|Kraków], November, 14, 1978, [|YouTube] Video
 * Anthony Braxton - [|Impressions] (John Coltrane), [|Woodstock Jazz Festival],1981, [|YouTube] Video

=References= =What links here?= include page="Battery" component="backlinks" limit="40"
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