25,161
edits
Changes
Created page with "'''Home * Evaluation * Pawn Structure * Passed Pawn''' FILE:LOGO_SC_Freibauer_Schoneberg.jpg|border|right|thumb|link=http://www.freibauer-schoeneberg...."
'''[[Main Page|Home]] * [[Evaluation]] * [[Pawn Structure]] * Passed Pawn'''
[[FILE:LOGO_SC_Freibauer_Schoneberg.jpg|border|right|thumb|link=http://www.freibauer-schoeneberg.de/| Schachclub [http://de.wikipedia.org/wiki/Freibauer_%28Schach%29 Freibauer] [https://en.wikipedia.org/wiki/Sch%C3%B6neberg Schöneberg] <ref>[http://www.freibauer-schoeneberg.de/ Schachclub Freibauer Schöneberg e.V]</ref> ]]
A '''passed pawn,''' also called '''free pawn''' or '''passer''', is a [[Pawn|pawn]] with no opponent pawns in front on the same or adjacent files. In case of [[Doubled Pawn|doubled pawns]], it is wrong to score the back twin as passed, even if it meets the above conditions. Therefor, the passer requires his [[Pawn Spans|front span]] [[General Setwise Operations#DisjointSets|disjoint]] from all other pawns, as well as the [[Pawn Fills|front fill]] disjoint from opponent pawn attacks, which also excludes [[Pawn Levers (Bitboards)|pawn levers]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=48823 passed pawn question] by [[Alberto Sanjuan]], [[CCC]], August 02, 2013</ref>.
=Considerations=
In its simplest form, passed pawn evaluation assigns a bonus which increases as the pawn advances, often by dedicated [[Piece-Square Tables|piece-square tables]]. There are, however, different considerations to be taken into account, some of which are listed below.
* [[Blockade of Stop]]
* [[Control of Stop and Telestop]]
* [[Connected Passed Pawns]]
* [[King Pawn Tropism]]
* [[Outside Passed Pawn]]
* [[Pawn Race]]
* [[Protected Passed Pawn]]
* [[Rule of the Square]]
* [[Tarrasch Rule]]
* [[Unstoppable Passer]]
=See also=
* [[Candidate Passed Pawn]]
* [[Hidden Passed Pawn]]
* [[Passed Pawns (Bitboards)]]
* [[Passed Pawn Extensions]]
* [[Pawns Breakthrough]]
* [[Promotions]]
* [[Réti Endgame Study]]
* [[King Pattern#SetwiseRuleoftheSquare|Set-wise Rule of the Square]]
=Forum Posts=
==1998 ...==
* [https://www.stmintz.com/ccc/index.php?id=17661 Passed Pawn Evaluation] by [[Stuart Cracraft]], [[CCC]], April 27, 1998
* [https://www.stmintz.com/ccc/index.php?id=75113 Passed pawn values] by [[James Robertson]], [[CCC]], October 27, 1999
==2000 ...==
* [https://www.stmintz.com/ccc/index.php?id=98943 Passed Pawn Suite] by [[Howard Exner]], [[CCC]], February 24, 2000 » [[Test-Positions]]
* [https://www.stmintz.com/ccc/index.php?id=290374 Intersting testposition: multiple passed pawns] by [[Alex Kure|Alexander Kure]], [[CCC]], March 23, 2003
* [https://www.stmintz.com/ccc/index.php?id=341706 passed pawn evaluation] by macaroni, [[CCC]], January 11, 2004
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=34198 Passed Pawns (endgame)] by [[Marek Kwiatkowski]], [[CCC]], May 07, 2010
* [http://www.talkchess.com/forum/viewtopic.php?t=34879 An unstoppable passed pawn] by [[Marek Kwiatkowski]], [[CCC]], June 11, 2010
* [http://www.talkchess.com/forum/viewtopic.php?t=37748 Improving evaluation of passed pawns] by [[Ben-Hur Carlos Vieira Langoni Junior]], [[CCC]], January 22, 2011 » [[Candidate Passed Pawn]]
* [http://www.talkchess.com/forum/viewtopic.php?t=48823 passed pawn question] by [[Alberto Sanjuan]], [[CCC]], August 02, 2013
==2015 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=55392 The strongest passer] by [[Lyudmil Tsvetkov]], [[CCC]], February 19, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=55433 bad eval for passers ?] by [[Daniel Anulliero]], [[CCC]], February 23, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=56682 passed but doubled pawns] by [[Jon Dart]], [[CCC]], June 15, 2015 » [[Doubled Pawn]]
* [http://www.talkchess.com/forum/viewtopic.php?t=57708 Passed pawn detection in array based board representations] by [[Shawn Chidester]], [[CCC]], September 20, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=58583 Passed pawn evaluation] by [[Daniel Mehrmann]], [[CCC]], December 13, 2015
=External Links=
* [https://en.wikipedia.org/wiki/Passed_pawn Passed pawn from Wikipedia]
* [http://www.top10chess.com/2008/09/tactical-motif-iv-passed-pawns.html Top 10 chess: Tactical Motif IV: Passed pawns & Promotions]
* [https://webspace.utexas.edu/zzw57/rtc/eval/passed_pawns.html Passed Pawn Evaluation] from [https://webspace.utexas.edu/zzw57/rtc/eval/eval.html Rybka 1.0 beta vs. Fruit Evaluation] by [[Zach Wegner]] » [[Rybka Controversy]]
=References=
<references />
'''[[Pawn Structure|Up one Level]]'''
[[FILE:LOGO_SC_Freibauer_Schoneberg.jpg|border|right|thumb|link=http://www.freibauer-schoeneberg.de/| Schachclub [http://de.wikipedia.org/wiki/Freibauer_%28Schach%29 Freibauer] [https://en.wikipedia.org/wiki/Sch%C3%B6neberg Schöneberg] <ref>[http://www.freibauer-schoeneberg.de/ Schachclub Freibauer Schöneberg e.V]</ref> ]]
A '''passed pawn,''' also called '''free pawn''' or '''passer''', is a [[Pawn|pawn]] with no opponent pawns in front on the same or adjacent files. In case of [[Doubled Pawn|doubled pawns]], it is wrong to score the back twin as passed, even if it meets the above conditions. Therefor, the passer requires his [[Pawn Spans|front span]] [[General Setwise Operations#DisjointSets|disjoint]] from all other pawns, as well as the [[Pawn Fills|front fill]] disjoint from opponent pawn attacks, which also excludes [[Pawn Levers (Bitboards)|pawn levers]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=48823 passed pawn question] by [[Alberto Sanjuan]], [[CCC]], August 02, 2013</ref>.
=Considerations=
In its simplest form, passed pawn evaluation assigns a bonus which increases as the pawn advances, often by dedicated [[Piece-Square Tables|piece-square tables]]. There are, however, different considerations to be taken into account, some of which are listed below.
* [[Blockade of Stop]]
* [[Control of Stop and Telestop]]
* [[Connected Passed Pawns]]
* [[King Pawn Tropism]]
* [[Outside Passed Pawn]]
* [[Pawn Race]]
* [[Protected Passed Pawn]]
* [[Rule of the Square]]
* [[Tarrasch Rule]]
* [[Unstoppable Passer]]
=See also=
* [[Candidate Passed Pawn]]
* [[Hidden Passed Pawn]]
* [[Passed Pawns (Bitboards)]]
* [[Passed Pawn Extensions]]
* [[Pawns Breakthrough]]
* [[Promotions]]
* [[Réti Endgame Study]]
* [[King Pattern#SetwiseRuleoftheSquare|Set-wise Rule of the Square]]
=Forum Posts=
==1998 ...==
* [https://www.stmintz.com/ccc/index.php?id=17661 Passed Pawn Evaluation] by [[Stuart Cracraft]], [[CCC]], April 27, 1998
* [https://www.stmintz.com/ccc/index.php?id=75113 Passed pawn values] by [[James Robertson]], [[CCC]], October 27, 1999
==2000 ...==
* [https://www.stmintz.com/ccc/index.php?id=98943 Passed Pawn Suite] by [[Howard Exner]], [[CCC]], February 24, 2000 » [[Test-Positions]]
* [https://www.stmintz.com/ccc/index.php?id=290374 Intersting testposition: multiple passed pawns] by [[Alex Kure|Alexander Kure]], [[CCC]], March 23, 2003
* [https://www.stmintz.com/ccc/index.php?id=341706 passed pawn evaluation] by macaroni, [[CCC]], January 11, 2004
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=34198 Passed Pawns (endgame)] by [[Marek Kwiatkowski]], [[CCC]], May 07, 2010
* [http://www.talkchess.com/forum/viewtopic.php?t=34879 An unstoppable passed pawn] by [[Marek Kwiatkowski]], [[CCC]], June 11, 2010
* [http://www.talkchess.com/forum/viewtopic.php?t=37748 Improving evaluation of passed pawns] by [[Ben-Hur Carlos Vieira Langoni Junior]], [[CCC]], January 22, 2011 » [[Candidate Passed Pawn]]
* [http://www.talkchess.com/forum/viewtopic.php?t=48823 passed pawn question] by [[Alberto Sanjuan]], [[CCC]], August 02, 2013
==2015 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=55392 The strongest passer] by [[Lyudmil Tsvetkov]], [[CCC]], February 19, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=55433 bad eval for passers ?] by [[Daniel Anulliero]], [[CCC]], February 23, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=56682 passed but doubled pawns] by [[Jon Dart]], [[CCC]], June 15, 2015 » [[Doubled Pawn]]
* [http://www.talkchess.com/forum/viewtopic.php?t=57708 Passed pawn detection in array based board representations] by [[Shawn Chidester]], [[CCC]], September 20, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=58583 Passed pawn evaluation] by [[Daniel Mehrmann]], [[CCC]], December 13, 2015
=External Links=
* [https://en.wikipedia.org/wiki/Passed_pawn Passed pawn from Wikipedia]
* [http://www.top10chess.com/2008/09/tactical-motif-iv-passed-pawns.html Top 10 chess: Tactical Motif IV: Passed pawns & Promotions]
* [https://webspace.utexas.edu/zzw57/rtc/eval/passed_pawns.html Passed Pawn Evaluation] from [https://webspace.utexas.edu/zzw57/rtc/eval/eval.html Rybka 1.0 beta vs. Fruit Evaluation] by [[Zach Wegner]] » [[Rybka Controversy]]
=References=
<references />
'''[[Pawn Structure|Up one Level]]'''
