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Created page with "'''Home * Evaluation * Space''' FILE:HyperboloidOfOneSheet.svg|border|right|thumb|[https://en.wikipedia.org/wiki/Anti-de_Sitter_space Anti-de Sitter space..."
'''[[Main Page|Home]] * [[Evaluation]] * Space'''
[[FILE:HyperboloidOfOneSheet.svg|border|right|thumb|[https://en.wikipedia.org/wiki/Anti-de_Sitter_space Anti-de Sitter space] <ref>Image of (1 + 1)-dimensional [https://en.wikipedia.org/wiki/Anti-de_Sitter_space anti-de Sitter space] embedded in flat (1 + 2)-dimensional space. The t1- and t2-axes lie in the plane of [https://en.wikipedia.org/wiki/Rotational_symmetry rotational symmetry], and the x1-axis is [https://en.wikipedia.org/wiki/Normal_(geometry) normal] to that plane. The embedded surface contains closed timelike curves circling the x1 axis, though these can be eliminated by "unrolling" the embedding (more precisely, by taking the [https://en.wikipedia.org/wiki/Covering_space#Universal_covers universal cover]) - Description from [https://en.wikipedia.org/wiki/Anti-de_Sitter_space Anti-de Sitter space from Wikipedia] - [https://commons.wikimedia.org/wiki/File:HyperboloidOfOneSheet.svg Image] "[https://en.wikipedia.org/wiki/Hyperboloid Hyperboloid] of one Sheet" by [https://commons.wikimedia.org/wiki/User:Krishnavedala Krishnavedala], May 23, 2011, [https://creativecommons.org/licenses/by-sa/3.0/deed.en CC BY-SA 3.0], [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]</ref> ]]
'''Space''',<br/>
a loosely defined evaluation feature related to [[Square Control|square control]], in particular [[Center Control|center control]] considered by [[Piece-Square Tables|piece placement]] dependent on [[Pawn Structure|pawn structure]]. A player controlling more squares than the other is said to have a spatial advantage <ref>[https://en.wikipedia.org/wiki/Glossary_of_chess#Space Glossary of chess - Space]</ref>. [https://en.wikipedia.org/wiki/Siegbert_Tarrasch Tarrasch's] concept of force, space and time <ref>[https://en.wikipedia.org/wiki/Siegbert_Tarrasch Siegbert Tarrasch] ('''1931'''). ''[http://www.amazon.de/Das-Schachspiel-Originalfassung-Siegbert-Tarrasch/dp/3938484845 Das Schachspiel]''. Die Eröffnung I. Allgemeiner Teil Die Kräfte, Der Raum, Die Zeit (German)</ref> and their equivalence (to some extend) is considered by [[Material|material]] (force), piece placement and center control (space) and roughly by [[Mobility|mobility]] (space and time).
=Implementations=
Some programs have explicit evaluation terms concerning space. For instance, [[Stockfish|Stockfish]] defines a space area bonus by the number of safe squares for minor pieces on the central four files on ranks 2 to 4, counting twice if on a [[Pawn Spans|rearspan]] of an own pawn. The space area bonus is multiplied by a weight, determined by the number of own pieces minus number of open files <ref>[https://hxim.github.io/Stockfish-Evaluation-Guide/ Stockfish Evaluation Guide] Space area, Space</ref>. [[Toga|Toga II]] 3.0 gives a non-linear bonus for pieces on the opponent half of the board - the more the better <ref>[http://www.talkchess.com/forum/viewtopic.php?t=61064&start=4 Re: Calculating space] by [[Pawel Koziol]], [[CCC]], August 08, 2016</ref>. [[Senpai|Senpai 2.0]] considers space by the "glorified" [[Pawn chain|pawn chain]] [[Piece-Square Tables|piece-square tables]] <ref>[http://www.chessprogramming.net/senpai/ Senpai – Chess Programming]</ref>.
=See also=
* [[Center Control]]
* [[Development]]
* [[Distance]]
* [[Direction]]
* [[Mobility]]
* [[Pawn Chain]]
* [[Piece-Square Tables]]
* [[Search Space]]
* [[Space-Time Tradeoff]]
* [[Square Control]]
* [[Tempo]]
=Blog & Forum Posts=
* [https://www.chess.com/article/view/space-and-the-attack Space and the Attack] by [https://www.chess.com/member/bryansmith Bryan Smith], [https://en.wikipedia.org/wiki/Chess.com Chess.com], December 08, 2011,
* [http://chessskill.blogspot.com/2013/06/space.html Space] by [https://www.blogger.com/profile/13437334325501974461 James Stripes], [http://chessskill.blogspot.com/ ChessSkill Blog], June 22, 2013
* [http://www.talkchess.com/forum/viewtopic.php?t=61064 Calculating space] by [[Shawn Chidester]], [[CCC]], August 07, 2016
: [http://www.talkchess.com/forum/viewtopic.php?t=61064&start=4 Re: Calculating space] by [[Pawel Koziol]], [[CCC]], August 08, 2016
=External Links=
==Space in Chess==
* [https://en.wikipedia.org/wiki/Chess_strategy#Space Chess strategy - Space | Wikipedia]
* [https://en.wikipedia.org/wiki/Glossary_of_chess#Space Glossary of chess - Space | Wikipedia]
==Chess in Space==
* [https://sites.google.com/site/caroluschess/modern-history/chess-in-space Chess in Space - NASA 1970 First Chess Experiments] from [https://sites.google.com/site/caroluschess/home Carolus Chess] » [[Daly CP]]
* [https://en.chessbase.com/post/che-in-space-houston-we-have-a-checkmate Chess in Space: Houston, we have a checkmate], [[ChessBase|ChessBase News]], August 29, 2008
* [https://www.nasa.gov/mission_pages/station/expeditions/expedition17/earth_v_space_chess.html NASA - First Earth vs. Space Chess Match Ends – Earth Wins] by [https://en.wikipedia.org/wiki/Gregory_Chamitoff Greg Chamitoff], December 16, 2009
==Space elsewhere==
* [https://en.wiktionary.org/wiki/space space - Wiktionary]
* [https://en.wikipedia.org/wiki/Space Space from Wikipedia]
* [https://en.wikipedia.org/wiki/Space_(disambiguation) Space (disambiguation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Space_(mathematics) Space (mathematics) from Wikipedia]
* [https://en.wikipedia.org/wiki/Euclidean_space Euclidean space from Wikipedia]
: [https://en.wikipedia.org/wiki/Two-dimensional_space Two-dimensional space from Wikipedia]
: [https://en.wikipedia.org/wiki/Three-dimensional_space Three-dimensional space from Wikipedia]
* [https://en.wikipedia.org/wiki/Space_(punctuation) Space (punctuation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Kh%C3%B4ra Khôra from Wikipedia]
* [https://en.wikipedia.org/wiki/Space_rock Space rock from Wikipedia]
* [https://en.wikipedia.org/wiki/Spacetime Spacetime from Wikipedia]
* [https://en.wikipedia.org/wiki/Address_space Address space from Wikipedia]
* [https://en.wikipedia.org/wiki/Calculating_Space Calculating Space from Wikipedia] » [[Konrad Zuse]]
* [https://en.wikipedia.org/wiki/Memory_space Memory space from Wikipedia] » [[Memory]]
* [https://en.wikipedia.org/wiki/Mental_space Mental space from Wikipedia]
* [https://en.wikipedia.org/wiki/Outer_space Outer space from Wikipedia]
* [https://en.wikipedia.org/wiki/Search_space Search space from Wikipedia] » [[Search Space]]
* [https://en.wikipedia.org/wiki/State_space State space from Wikipedia]
=References=
<references />
'''[[Evaluation|Up one Level]]'''
[[FILE:HyperboloidOfOneSheet.svg|border|right|thumb|[https://en.wikipedia.org/wiki/Anti-de_Sitter_space Anti-de Sitter space] <ref>Image of (1 + 1)-dimensional [https://en.wikipedia.org/wiki/Anti-de_Sitter_space anti-de Sitter space] embedded in flat (1 + 2)-dimensional space. The t1- and t2-axes lie in the plane of [https://en.wikipedia.org/wiki/Rotational_symmetry rotational symmetry], and the x1-axis is [https://en.wikipedia.org/wiki/Normal_(geometry) normal] to that plane. The embedded surface contains closed timelike curves circling the x1 axis, though these can be eliminated by "unrolling" the embedding (more precisely, by taking the [https://en.wikipedia.org/wiki/Covering_space#Universal_covers universal cover]) - Description from [https://en.wikipedia.org/wiki/Anti-de_Sitter_space Anti-de Sitter space from Wikipedia] - [https://commons.wikimedia.org/wiki/File:HyperboloidOfOneSheet.svg Image] "[https://en.wikipedia.org/wiki/Hyperboloid Hyperboloid] of one Sheet" by [https://commons.wikimedia.org/wiki/User:Krishnavedala Krishnavedala], May 23, 2011, [https://creativecommons.org/licenses/by-sa/3.0/deed.en CC BY-SA 3.0], [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]</ref> ]]
'''Space''',<br/>
a loosely defined evaluation feature related to [[Square Control|square control]], in particular [[Center Control|center control]] considered by [[Piece-Square Tables|piece placement]] dependent on [[Pawn Structure|pawn structure]]. A player controlling more squares than the other is said to have a spatial advantage <ref>[https://en.wikipedia.org/wiki/Glossary_of_chess#Space Glossary of chess - Space]</ref>. [https://en.wikipedia.org/wiki/Siegbert_Tarrasch Tarrasch's] concept of force, space and time <ref>[https://en.wikipedia.org/wiki/Siegbert_Tarrasch Siegbert Tarrasch] ('''1931'''). ''[http://www.amazon.de/Das-Schachspiel-Originalfassung-Siegbert-Tarrasch/dp/3938484845 Das Schachspiel]''. Die Eröffnung I. Allgemeiner Teil Die Kräfte, Der Raum, Die Zeit (German)</ref> and their equivalence (to some extend) is considered by [[Material|material]] (force), piece placement and center control (space) and roughly by [[Mobility|mobility]] (space and time).
=Implementations=
Some programs have explicit evaluation terms concerning space. For instance, [[Stockfish|Stockfish]] defines a space area bonus by the number of safe squares for minor pieces on the central four files on ranks 2 to 4, counting twice if on a [[Pawn Spans|rearspan]] of an own pawn. The space area bonus is multiplied by a weight, determined by the number of own pieces minus number of open files <ref>[https://hxim.github.io/Stockfish-Evaluation-Guide/ Stockfish Evaluation Guide] Space area, Space</ref>. [[Toga|Toga II]] 3.0 gives a non-linear bonus for pieces on the opponent half of the board - the more the better <ref>[http://www.talkchess.com/forum/viewtopic.php?t=61064&start=4 Re: Calculating space] by [[Pawel Koziol]], [[CCC]], August 08, 2016</ref>. [[Senpai|Senpai 2.0]] considers space by the "glorified" [[Pawn chain|pawn chain]] [[Piece-Square Tables|piece-square tables]] <ref>[http://www.chessprogramming.net/senpai/ Senpai – Chess Programming]</ref>.
=See also=
* [[Center Control]]
* [[Development]]
* [[Distance]]
* [[Direction]]
* [[Mobility]]
* [[Pawn Chain]]
* [[Piece-Square Tables]]
* [[Search Space]]
* [[Space-Time Tradeoff]]
* [[Square Control]]
* [[Tempo]]
=Blog & Forum Posts=
* [https://www.chess.com/article/view/space-and-the-attack Space and the Attack] by [https://www.chess.com/member/bryansmith Bryan Smith], [https://en.wikipedia.org/wiki/Chess.com Chess.com], December 08, 2011,
* [http://chessskill.blogspot.com/2013/06/space.html Space] by [https://www.blogger.com/profile/13437334325501974461 James Stripes], [http://chessskill.blogspot.com/ ChessSkill Blog], June 22, 2013
* [http://www.talkchess.com/forum/viewtopic.php?t=61064 Calculating space] by [[Shawn Chidester]], [[CCC]], August 07, 2016
: [http://www.talkchess.com/forum/viewtopic.php?t=61064&start=4 Re: Calculating space] by [[Pawel Koziol]], [[CCC]], August 08, 2016
=External Links=
==Space in Chess==
* [https://en.wikipedia.org/wiki/Chess_strategy#Space Chess strategy - Space | Wikipedia]
* [https://en.wikipedia.org/wiki/Glossary_of_chess#Space Glossary of chess - Space | Wikipedia]
==Chess in Space==
* [https://sites.google.com/site/caroluschess/modern-history/chess-in-space Chess in Space - NASA 1970 First Chess Experiments] from [https://sites.google.com/site/caroluschess/home Carolus Chess] » [[Daly CP]]
* [https://en.chessbase.com/post/che-in-space-houston-we-have-a-checkmate Chess in Space: Houston, we have a checkmate], [[ChessBase|ChessBase News]], August 29, 2008
* [https://www.nasa.gov/mission_pages/station/expeditions/expedition17/earth_v_space_chess.html NASA - First Earth vs. Space Chess Match Ends – Earth Wins] by [https://en.wikipedia.org/wiki/Gregory_Chamitoff Greg Chamitoff], December 16, 2009
==Space elsewhere==
* [https://en.wiktionary.org/wiki/space space - Wiktionary]
* [https://en.wikipedia.org/wiki/Space Space from Wikipedia]
* [https://en.wikipedia.org/wiki/Space_(disambiguation) Space (disambiguation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Space_(mathematics) Space (mathematics) from Wikipedia]
* [https://en.wikipedia.org/wiki/Euclidean_space Euclidean space from Wikipedia]
: [https://en.wikipedia.org/wiki/Two-dimensional_space Two-dimensional space from Wikipedia]
: [https://en.wikipedia.org/wiki/Three-dimensional_space Three-dimensional space from Wikipedia]
* [https://en.wikipedia.org/wiki/Space_(punctuation) Space (punctuation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Kh%C3%B4ra Khôra from Wikipedia]
* [https://en.wikipedia.org/wiki/Space_rock Space rock from Wikipedia]
* [https://en.wikipedia.org/wiki/Spacetime Spacetime from Wikipedia]
* [https://en.wikipedia.org/wiki/Address_space Address space from Wikipedia]
* [https://en.wikipedia.org/wiki/Calculating_Space Calculating Space from Wikipedia] » [[Konrad Zuse]]
* [https://en.wikipedia.org/wiki/Memory_space Memory space from Wikipedia] » [[Memory]]
* [https://en.wikipedia.org/wiki/Mental_space Mental space from Wikipedia]
* [https://en.wikipedia.org/wiki/Outer_space Outer space from Wikipedia]
* [https://en.wikipedia.org/wiki/Search_space Search space from Wikipedia] » [[Search Space]]
* [https://en.wikipedia.org/wiki/State_space State space from Wikipedia]
=References=
<references />
'''[[Evaluation|Up one Level]]'''
