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Created page with "'''Home * Chess * Tactics * Overloading''' '''Overloading''' is a chess tactic where a piece has more than one exclusive defending obligation. For insta..."
'''[[Main Page|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 [[Attack and Defend Maps|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|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 [[Checkmate|mate]] threatening squares around the king or the backrank.
Despite tactics is the domain of [[Search|search]], and static [[Evaluation|evaluation]] of overloading pieces seems complicated considering tactical interactions and issues like pieces [[En prise|en prise]] or [[Hanging Piece|hanging]], [[Discovered Attack|discovered attacks]], [[Check|checks]], [[Pin|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|search]], [[Quiescence Search|quiescence search]] and their [[Selectivity|selectivity]].
=Sample=
{|
|-
| <fentt border="double" style="font-size:28pt">8/1b1r1pkp/6p1/8/8/3n2NP/4BPP1/1R4K1</fentt>
!
| <fentt border="double" style="font-size:28pt">8/1b1r1pkp/6p1/8/8/3n1N1P/4BPP1/1R4K1</fentt>
|-
| 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 Bxd3, since the black d7 rook is overloaded defending d3 and b7.
However in the right position it does not work as intended <ref>[http://www.chesscorner.com/tutorial/tactics/overloading/overload.htm Chess Corner - Chess Tutorial - Overloading]</ref>, since Black has the [[Zwischenzug]] 1... Bxf3, which also demonstrates the difficulty to evaluate chess tactics statically.
=See also=
* [[Attack and Defend Maps]]
* [[Deflection]]
* [[SEE - The Swap Algorithm]]
* [[Square Attacked By]]
* [[Static Exchange Evaluation]]
* [[Undermining]]
=External Links=
* [https://en.wikipedia.org/wiki/Overloading_%28chess%29 Overloading (chess) from Wikipedia]
* [http://www.chesscorner.com/tutorial/tactics/overloading/overload.htm Chess Corner - Chess Tutorial - Overloading]
* [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
: 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]
: {{#evu:https://www.youtube.com/watch?v=4pLbselkeSw|alignment=left|valignment=top}}
=References=
<references />
'''[[Tactics|Up one Level]]'''
[[Category:Passport]]
[[Category:Klaus Doldinger]]
[[Category:Wolfgang Schmid]]
'''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 [[Attack and Defend Maps|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|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 [[Checkmate|mate]] threatening squares around the king or the backrank.
Despite tactics is the domain of [[Search|search]], and static [[Evaluation|evaluation]] of overloading pieces seems complicated considering tactical interactions and issues like pieces [[En prise|en prise]] or [[Hanging Piece|hanging]], [[Discovered Attack|discovered attacks]], [[Check|checks]], [[Pin|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|search]], [[Quiescence Search|quiescence search]] and their [[Selectivity|selectivity]].
=Sample=
{|
|-
| <fentt border="double" style="font-size:28pt">8/1b1r1pkp/6p1/8/8/3n2NP/4BPP1/1R4K1</fentt>
!
| <fentt border="double" style="font-size:28pt">8/1b1r1pkp/6p1/8/8/3n1N1P/4BPP1/1R4K1</fentt>
|-
| 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 Bxd3, since the black d7 rook is overloaded defending d3 and b7.
However in the right position it does not work as intended <ref>[http://www.chesscorner.com/tutorial/tactics/overloading/overload.htm Chess Corner - Chess Tutorial - Overloading]</ref>, since Black has the [[Zwischenzug]] 1... Bxf3, which also demonstrates the difficulty to evaluate chess tactics statically.
=See also=
* [[Attack and Defend Maps]]
* [[Deflection]]
* [[SEE - The Swap Algorithm]]
* [[Square Attacked By]]
* [[Static Exchange Evaluation]]
* [[Undermining]]
=External Links=
* [https://en.wikipedia.org/wiki/Overloading_%28chess%29 Overloading (chess) from Wikipedia]
* [http://www.chesscorner.com/tutorial/tactics/overloading/overload.htm Chess Corner - Chess Tutorial - Overloading]
* [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
: 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]
: {{#evu:https://www.youtube.com/watch?v=4pLbselkeSw|alignment=left|valignment=top}}
=References=
<references />
'''[[Tactics|Up one Level]]'''
[[Category:Passport]]
[[Category:Klaus Doldinger]]
[[Category:Wolfgang Schmid]]
