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Created page with "'''Home * Chess * Squares * Control''' FILE:Piet_Program.jpg|border|right|thumb| Piet <ref>Program in the [https://en.wikipedia.org/wiki/Esoteric_prog..."
'''[[Main Page|Home]] * [[Chess]] * [[Squares]] * Control'''
[[FILE:Piet_Program.jpg|border|right|thumb| Piet <ref>Program in the [https://en.wikipedia.org/wiki/Esoteric_programming_language#Piet Piet programming language], printing "Piet", by [https://commons.wikimedia.org/wiki/User:Mosmas Thomas Schoch], February 26, 2006, see [http://www.retas.de/thomas/computer/programs/useless/piet/Piet/index.html Obfuscated Programming – Piet], Piet was named after the Dutch painter [[Arts#Mondrian|Piet Mondrian]], [http://www.dangermouse.net/esoteric/piet.html DM's Esoteric Programming Languages - Piet]</ref> ]]
'''Square Control''',<br/>
refers to which and how many pieces [[Attacks|attack]] or defend a particular square, independently from its [[Occupancy|occupancy]] state. Squares diagonally [[Pawn Attacks (Bitboards)|controlled]] by a pawn are usually taboo for opponent pieces, but the [[Stop Square|stop]] and possible [[Pawn Push|pawn push]] [[Target Square|target square]] is not controlled by the pawn itself, and could be [[Blockade|blocked]]. If the square under investigation is occupied, the question arises whether the piece is [[Hanging Piece|hanging]] (if controlled exclusively by the opponent side) or [[En prise|en prise]], which is topic of [[Static Exchange Evaluation|SEE]] and [[Quiescence Search|quiescence search]].
=In Evaluation=
Square control is considered in [[Evaluation|evaluating]] piece [[Mobility|mobility]] and [[Connectivity|connectivity]], [[King Safety#SquareControl|controls of squares around the king]] are matter of [[King Safety|king safety]] evaluation, and [[Center Control|center control]] might be considered as evaluation term in the [[Opening|opening]] or [[Middlegame|middlegame]]. Control of [[Pawn Spans#StopandDistantStop|stop and telestop]] squares of [[Passed Pawn|passers]] is another evaluation topic. Some programs calculate a square control balance as difference of the sums of [[Point Value#Reciprocal|reciprocal piece values]] of both sides, and further aggregate the controls over all squares, possibly already considering [[Center|center]], king areas and passed pawn [[Pawn Spans|front spans]] by a weight matrix.
=See also=
* [[Attack and Defend Maps]]
* [[Attacks]]
* [[Center Control]]
* [[Color Weakness]]
* [[Connectivity]]
* [[Control of Stop and Telestop]]
* [[En prise]]
* [[Guard Heuristic]]
* [[Hanging Piece]]
* [[Mobility]]
* [[Piece-Square Tables]]
* [[Quiescence Search]]
* [[Square Attacked By]]
* [[King Safety#SquareControl|Square Control in King Safety]]
* [[SOMA#SquareControl|Square Control in SOMA]]
* [[Static Exchange Evaluation]]
=Forum Posts=
* [http://www.talkchess.com/forum/viewtopic.php?t=55214 Binders] by [[Lyudmil Tsvetkov]], [[CCC]], February 04, 2015 » [[Pawn Structure]]
* [http://www.talkchess.com/forum/viewtopic.php?t=55342 Empty!] by [[Lyudmil Tsvetkov]], [[CCC]], February 14, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=55380 Pawn defence] by [[Lyudmil Tsvetkov]], [[CCC]], February 18, 2015
=External Links=
* [https://en.wikipedia.org/wiki/Chess_strategy#Control_of_the_center Control of the center | Chess strategy from Wikipedia]
* [http://www.janklare.de/klare/wordpress/?page_id=1078 RKeTZ] - Ground Control, [http://www.lokal-harmonie.de/ Lokal Harmonie], [https://en.wikipedia.org/wiki/Ruhrort Duisburg Ruhrort], April 2016, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: [[Videos#JanKlare|Jan Klare]], [https://nl.wikipedia.org/wiki/Luc_Ex Luc Ex], [https://de.wikipedia.org/wiki/Michael_Vatcher Michael Vatcher], [[Videos#AchimZepezauer|Achim Zepezauer]]
: {{#evu:https://www.youtube.com/watch?v=ByzGLlp9sJU|alignment=left|valignment=top}}
=References=
<references />
'''[[Squares|Up one Level]]'''
[[FILE:Piet_Program.jpg|border|right|thumb| Piet <ref>Program in the [https://en.wikipedia.org/wiki/Esoteric_programming_language#Piet Piet programming language], printing "Piet", by [https://commons.wikimedia.org/wiki/User:Mosmas Thomas Schoch], February 26, 2006, see [http://www.retas.de/thomas/computer/programs/useless/piet/Piet/index.html Obfuscated Programming – Piet], Piet was named after the Dutch painter [[Arts#Mondrian|Piet Mondrian]], [http://www.dangermouse.net/esoteric/piet.html DM's Esoteric Programming Languages - Piet]</ref> ]]
'''Square Control''',<br/>
refers to which and how many pieces [[Attacks|attack]] or defend a particular square, independently from its [[Occupancy|occupancy]] state. Squares diagonally [[Pawn Attacks (Bitboards)|controlled]] by a pawn are usually taboo for opponent pieces, but the [[Stop Square|stop]] and possible [[Pawn Push|pawn push]] [[Target Square|target square]] is not controlled by the pawn itself, and could be [[Blockade|blocked]]. If the square under investigation is occupied, the question arises whether the piece is [[Hanging Piece|hanging]] (if controlled exclusively by the opponent side) or [[En prise|en prise]], which is topic of [[Static Exchange Evaluation|SEE]] and [[Quiescence Search|quiescence search]].
=In Evaluation=
Square control is considered in [[Evaluation|evaluating]] piece [[Mobility|mobility]] and [[Connectivity|connectivity]], [[King Safety#SquareControl|controls of squares around the king]] are matter of [[King Safety|king safety]] evaluation, and [[Center Control|center control]] might be considered as evaluation term in the [[Opening|opening]] or [[Middlegame|middlegame]]. Control of [[Pawn Spans#StopandDistantStop|stop and telestop]] squares of [[Passed Pawn|passers]] is another evaluation topic. Some programs calculate a square control balance as difference of the sums of [[Point Value#Reciprocal|reciprocal piece values]] of both sides, and further aggregate the controls over all squares, possibly already considering [[Center|center]], king areas and passed pawn [[Pawn Spans|front spans]] by a weight matrix.
=See also=
* [[Attack and Defend Maps]]
* [[Attacks]]
* [[Center Control]]
* [[Color Weakness]]
* [[Connectivity]]
* [[Control of Stop and Telestop]]
* [[En prise]]
* [[Guard Heuristic]]
* [[Hanging Piece]]
* [[Mobility]]
* [[Piece-Square Tables]]
* [[Quiescence Search]]
* [[Square Attacked By]]
* [[King Safety#SquareControl|Square Control in King Safety]]
* [[SOMA#SquareControl|Square Control in SOMA]]
* [[Static Exchange Evaluation]]
=Forum Posts=
* [http://www.talkchess.com/forum/viewtopic.php?t=55214 Binders] by [[Lyudmil Tsvetkov]], [[CCC]], February 04, 2015 » [[Pawn Structure]]
* [http://www.talkchess.com/forum/viewtopic.php?t=55342 Empty!] by [[Lyudmil Tsvetkov]], [[CCC]], February 14, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=55380 Pawn defence] by [[Lyudmil Tsvetkov]], [[CCC]], February 18, 2015
=External Links=
* [https://en.wikipedia.org/wiki/Chess_strategy#Control_of_the_center Control of the center | Chess strategy from Wikipedia]
* [http://www.janklare.de/klare/wordpress/?page_id=1078 RKeTZ] - Ground Control, [http://www.lokal-harmonie.de/ Lokal Harmonie], [https://en.wikipedia.org/wiki/Ruhrort Duisburg Ruhrort], April 2016, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: [[Videos#JanKlare|Jan Klare]], [https://nl.wikipedia.org/wiki/Luc_Ex Luc Ex], [https://de.wikipedia.org/wiki/Michael_Vatcher Michael Vatcher], [[Videos#AchimZepezauer|Achim Zepezauer]]
: {{#evu:https://www.youtube.com/watch?v=ByzGLlp9sJU|alignment=left|valignment=top}}
=References=
<references />
'''[[Squares|Up one Level]]'''
