Difference between revisions of "Overloading"

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* [http://www.chessguru.net/tactic/overloading/ Chess overloading] from [http://www.chessguru.net/ chessguru.net]
 
* [http://www.chessguru.net/tactic/overloading/ Chess overloading] from [http://www.chessguru.net/ chessguru.net]
 
* [[:Category:Passport|Passport]] - [https://en.wikipedia.org/wiki/Passport_%28band%29#Discography Cross-Collateral (1975)] <ref>[https://en.wikipedia.org/wiki/Cross-collateralization Cross-collateralization from Wikipedia]</ref>, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
 
* [[:Category:Passport|Passport]] - [https://en.wikipedia.org/wiki/Passport_%28band%29#Discography Cross-Collateral (1975)] <ref>[https://en.wikipedia.org/wiki/Cross-collateralization Cross-collateralization from Wikipedia]</ref>, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: lineup: [[:Category:Klaus Doldinger|Klaus Doldinger]], [https://en.wikipedia.org/wiki/Curt_Cress Curt Cress], [[:Category:Wolfgang Schmid|Wolfgang Schmid]], [https://en.wikipedia.org/wiki/Kristian_Schultze Kristian Schultze]
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: lineup: [[:Category:Klaus Doldinger|Klaus Doldinger]], [[:Category:Curt Cress|Curt Cress]], [[:Category:Wolfgang Schmid|Wolfgang Schmid]], [https://en.wikipedia.org/wiki/Kristian_Schultze Kristian Schultze]
 
: {{#evu:https://www.youtube.com/watch?v=4pLbselkeSw|alignment=left|valignment=top}}
 
: {{#evu:https://www.youtube.com/watch?v=4pLbselkeSw|alignment=left|valignment=top}}
  
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'''[[Tactics|Up one Level]]'''
 
'''[[Tactics|Up one Level]]'''
 
[[Category:Passport]]
 
[[Category:Passport]]
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[[Category:Curt Cress]]
 
[[Category:Klaus Doldinger]]
 
[[Category:Klaus Doldinger]]
 
[[Category:Wolfgang Schmid]]
 
[[Category:Wolfgang Schmid]]

Latest revision as of 21:59, 20 January 2020

Home * Chess * Tactics * Overloading

Overloading is a chess tactic where a piece has more than one exclusive defending obligation. For instance, if the defending piece is member of two or more balanced defend and attack sets (equal number of attacks and defends) of their respective critical squares, the piece is likely overloaded, except for defending sliding pieces with both squares connected by a single move. Critical squares, attacked by the opponent, are either occupied by pieces from the defenders side, and/or otherwise mate threatening squares around the king or the backrank.

Despite tactics is the domain of search, and static evaluation of overloading pieces seems complicated considering tactical interactions and issues like pieces en prise or hanging, discovered attacks, checks, pins, Zwischenzug and counter attacks, some programs statically determine overloading pieces and other tactical motives for counting all kinds of obligations to consider their balance in nonlinear evaluation terms and/or controlling the search, quiescence search and their selectivity.

Sample

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8/1b1r1pkp/6p1/8/8/3n2NP/4BPP1/1R4K1 w - - 8/1b1r1pkp/6p1/8/8/3n1N1P/4BPP1/1R4K1 w - -

Here, in the left diagram, White to move wins a piece with 1.Bxd3, since the black d7 rook is overloaded defending d3 and b7. However, in the right position it does not work as intended [1], since Black has the Zwischenzug 1... Bxf3, which also demonstrates the difficulty to evaluate chess tactics statically. White can exchange rook versus two minors with 1.Rxb7, but that seems not that simple winning either.

See also

External Links

lineup: Klaus Doldinger, Curt Cress, Wolfgang Schmid, Kristian Schultze

References

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