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Created page with "'''Home * Evaluation * Game Phases * Endgame * Rook Endgame''' FILE:Bk1517_FinalFaceToFace.jpg|border|right|thumb| [[:Category:Samuel Bak|Samuel B..."
'''[[Main Page|Home]] * [[Evaluation]] * [[Game Phases]] * [[Endgame]] * Rook Endgame'''
[[FILE:Bk1517_FinalFaceToFace.jpg|border|right|thumb| [[:Category:Samuel Bak|Samuel Bak]] - Final Face to Face <ref>[[:Category:Samuel Bak|Samuel Bak] - Final Face to Face, [https://static1.squarespace.com/static/594044bd3a041171e0426683/t/599cc406d482e9d332c699eb/1503446026088/2012+Your+Move+2012+Chess.FINAL.pdf- Your Move 2012 - New Paintings by Samuel Bak] (pdf), [https://www.puckergallery.com/samuel-bak/ Pucker Gallery]</ref> ]]
'''Rook Endgame''',<br/>
an endgame with [[Rook|rooks]] and [[Pawn|pawns]] only. They are a common type of endgame in practice, occurring in about 10 percent of all games, including ones that do not reach an endgame at all <ref>[https://en.wikipedia.org/wiki/Chess_endgame#Rook_and_pawn_endings Rook and pawn endings from Wikipedia]</ref>. Many rook endgames have the reputation of being drawish, even with one or sometimes two pawns ahead as noted by the remark ‘''All rook endgames are drawn''’ <ref>[http://www.chesshistory.com/winter/winter45.html#5495._Tarrasch_v_Alekhine Chess Note 5498. Rook endgames] by [https://en.wikipedia.org/wiki/Edward_Winter_%28chess_historian%29 Edward Winter]</ref> <ref>[http://www.chessbase.com/newsdetail.asp?newsid=7363 CBM Blog: 'Rook endings are always drawn?'] by [[Karsten Müller]], [[ChessBase|ChessBase News]], July 14, 2011</ref>, which might be considered in evaluation by scaling the material balance by a factor of less than one.
=KRPKR=
<span id="KRPKR"></span>While most programs rely on [[Endgame Tablebases|endgame tablebases]] , in [[https://en.wikipedia.org/wiki/Rook_and_pawn_versus_rook_endgame rook and pawn versus rook endgame], two type of positions are of particular interest whose basic features may be considered with some pattern matching to adjust the score accordantly. The [[Lucena Position|Lucena position]], finally "building the bridge" is a win for the pawn side, and the [[Philidor Position|Philidor position]] is a draw. Most rook and pawn versus rook endgames reach either the Lucena or the Philidor position if played accurately <ref>[https://en.wikipedia.org/wiki/Jes%C3%BAs_de_la_Villa Jesús de la Villa] ('''2008'''). ''100 Endgames You Must Know: Vital Lessons for Every Chess Player''. [https://en.wikipedia.org/wiki/New_in_Chess New in Chess]</ref>.
* [[Lucena Position]]
* [[Philidor Position]]
=KRPPKRP=
In 2013 <ref>[[John Nunn]] ('''2013'''). ''Discoveries in R+2P vs. R+P Endings''. [[ICGA Journal#36_3|ICGA Journal, Vol. 36, No. 3]]</ref>, [[John Nunn]] applied the 7-piece [[Lomonosov Tablebases]] to R+2P vs. R+P positions from the famous book ''Rook Endings'', 2nd edition, by [https://en.wikipedia.org/wiki/Grigory_Levenfish Levenfish] and [https://en.wikipedia.org/wiki/Vasily_Smyslov Smyslov] <ref>[https://en.wikipedia.org/wiki/Grigory_Levenfish Grigory Levenfish] and [https://en.wikipedia.org/wiki/Vasily_Smyslov Vasily Smyslov] ('''1971, 1989'''). ''[http://books.google.com/books/about/Rook_endings.html?id=IlgYAQAAMAAJ&redir_esc=y Rook Endings]''. [https://en.wikipedia.org/wiki/Anova_Books Batsford]</ref>, which was assumed to contain the truth and, owing to Nunn, this is no longer so.
=See also=
* [[Endgame Tablebases]]
* [[Pawn Endgame]]
* [[Queen Endgame]]
* [[Tarrasch Rule]]
=Selected Publications=
* [https://en.wikipedia.org/wiki/Grigory_Levenfish Grigory Levenfish], [https://en.wikipedia.org/wiki/Vasily_Smyslov Vasily Smyslov] ('''1971, 1989'''). ''[http://books.google.com/books/about/Rook_endings.html?id=IlgYAQAAMAAJ&redir_esc=y Rook Endings]''. [https://en.wikipedia.org/wiki/Anova_Books Batsford]
* [[Coen Zuidema]] ('''1974'''). ''Chess: How to Program the Exceptions?'' Technical Report IW21/74, Department of Informatics, [https://en.wikipedia.org/wiki/Centrum_Wiskunde_%26_Informatica Mathematical Center Amdsterdam]. [http://oai.cwi.nl/oai/asset/9480/9480A.pdf pdf]
* [[Ken Thompson]] ('''1990'''). ''KQPKQ and KRPKR Endings''. [[ICGA Journal#13_4|ICCA Journal, Vol. 13, No. 4]]
* [[John Nunn]] ('''1992'''). ''Secrets of Rook Endings''. [https://en.wikipedia.org/wiki/Anova_Books Batsford], [http://www.newinchess.com/Secrets_of_Rook_Endings-p-511.html 2nd edition] ('''1999'''). [https://en.wikipedia.org/wiki/Gambit_Publications Gambit] <ref>[[Jaap van den Herik]], [[Bob Herschberg]]. ('''1993'''). ''J. Nunn: Secrets of Rook Endings''. [[ICGA Journal#16_2|ICCA Journal, Vol. 16, No. 2]]</ref>
* [[John Nunn]] ('''2010'''). ''[http://www.newinchess.com/Nunn_s_Chess_Endings__Volume_2-p-5053.html Nunn's Chess Endings, volume 2]''. [https://en.wikipedia.org/wiki/Gambit_Publications Gambit]
* [[John Nunn]] ('''2013'''). ''Discoveries in R+2P vs. R+P Endings''. [[ICGA Journal#36_3|ICGA Journal, Vol. 36, No. 3]] » [[Lomonosov Tablebases]]
* [[Guy Haworth]] ('''2017'''). ''Understanding Rook Endgames''. [[ICGA Journal#39_2|ICGA Journal, Vol. 39, No. 2]]
=Postings=
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=37640 Rook endgame: Wojtaszek-Navara] by [[Albert Silver]], [[CCC]], January 16, 2011
* [http://support.stockfishchess.org/discussions/problems/4543-wrong-evaluation-of-rook-endings-with-an-extra-pawn-on-one-side Re: Wrong evaluation of Rook endings with an extra pawn on one side] by [[Tord Romstad]], [[Stockfish#Support|Stockfish Support]], June 21, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=52775 Obligatory scaling] by [[Lyudmil Tsvetkov]], [[CCC]], June 27, 2014
==2015 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=55954 What's Essential Rook & Pawn Endgame Knowledge?] by [[Steve Maughan]], [[CCC]], April 10, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=57539 7 men Rook endgames H4 vs SF in recent TCEC stage 1b] by Nay Lin Tun, [[CCC]], September 07, 2015 » [[Lomonosov Tablebases]], [[TCEC Season 8]]
* [http://www.talkchess.com/forum/viewtopic.php?t=63911 advanced krkp function] by [[Daniel José Queraltó]], [[CCC]], May 06, 2017
=External Links=
* [https://en.wikipedia.org/wiki/Chess_endgame#Rook_and_pawn_endings Rook and pawn endings from Wikipedia]
* [http://www.chessbase.com/newsdetail.asp?newsid=7363 CBM Blog: 'Rook endings are always drawn?'] by [[Karsten Müller]], [[ChessBase|ChessBase News]], July 14, 2011
* [https://en.wikipedia.org/wiki/Rook_and_pawn_versus_rook_endgame Rook and pawn versus rook endgame from Wikipedia]
: [https://en.wikipedia.org/wiki/Lucena_position Lucena position from Wikipedia]
: [https://en.wikipedia.org/wiki/Philidor_position#Philidor.27s_position.2C_rook_and_pawn_versus_rook Philidor position from Wikipedia]
=References=
<references />
'''[[Endgame|Up one Level]]'''
[[Category:Samuel Bak]]
[[FILE:Bk1517_FinalFaceToFace.jpg|border|right|thumb| [[:Category:Samuel Bak|Samuel Bak]] - Final Face to Face <ref>[[:Category:Samuel Bak|Samuel Bak] - Final Face to Face, [https://static1.squarespace.com/static/594044bd3a041171e0426683/t/599cc406d482e9d332c699eb/1503446026088/2012+Your+Move+2012+Chess.FINAL.pdf- Your Move 2012 - New Paintings by Samuel Bak] (pdf), [https://www.puckergallery.com/samuel-bak/ Pucker Gallery]</ref> ]]
'''Rook Endgame''',<br/>
an endgame with [[Rook|rooks]] and [[Pawn|pawns]] only. They are a common type of endgame in practice, occurring in about 10 percent of all games, including ones that do not reach an endgame at all <ref>[https://en.wikipedia.org/wiki/Chess_endgame#Rook_and_pawn_endings Rook and pawn endings from Wikipedia]</ref>. Many rook endgames have the reputation of being drawish, even with one or sometimes two pawns ahead as noted by the remark ‘''All rook endgames are drawn''’ <ref>[http://www.chesshistory.com/winter/winter45.html#5495._Tarrasch_v_Alekhine Chess Note 5498. Rook endgames] by [https://en.wikipedia.org/wiki/Edward_Winter_%28chess_historian%29 Edward Winter]</ref> <ref>[http://www.chessbase.com/newsdetail.asp?newsid=7363 CBM Blog: 'Rook endings are always drawn?'] by [[Karsten Müller]], [[ChessBase|ChessBase News]], July 14, 2011</ref>, which might be considered in evaluation by scaling the material balance by a factor of less than one.
=KRPKR=
<span id="KRPKR"></span>While most programs rely on [[Endgame Tablebases|endgame tablebases]] , in [[https://en.wikipedia.org/wiki/Rook_and_pawn_versus_rook_endgame rook and pawn versus rook endgame], two type of positions are of particular interest whose basic features may be considered with some pattern matching to adjust the score accordantly. The [[Lucena Position|Lucena position]], finally "building the bridge" is a win for the pawn side, and the [[Philidor Position|Philidor position]] is a draw. Most rook and pawn versus rook endgames reach either the Lucena or the Philidor position if played accurately <ref>[https://en.wikipedia.org/wiki/Jes%C3%BAs_de_la_Villa Jesús de la Villa] ('''2008'''). ''100 Endgames You Must Know: Vital Lessons for Every Chess Player''. [https://en.wikipedia.org/wiki/New_in_Chess New in Chess]</ref>.
* [[Lucena Position]]
* [[Philidor Position]]
=KRPPKRP=
In 2013 <ref>[[John Nunn]] ('''2013'''). ''Discoveries in R+2P vs. R+P Endings''. [[ICGA Journal#36_3|ICGA Journal, Vol. 36, No. 3]]</ref>, [[John Nunn]] applied the 7-piece [[Lomonosov Tablebases]] to R+2P vs. R+P positions from the famous book ''Rook Endings'', 2nd edition, by [https://en.wikipedia.org/wiki/Grigory_Levenfish Levenfish] and [https://en.wikipedia.org/wiki/Vasily_Smyslov Smyslov] <ref>[https://en.wikipedia.org/wiki/Grigory_Levenfish Grigory Levenfish] and [https://en.wikipedia.org/wiki/Vasily_Smyslov Vasily Smyslov] ('''1971, 1989'''). ''[http://books.google.com/books/about/Rook_endings.html?id=IlgYAQAAMAAJ&redir_esc=y Rook Endings]''. [https://en.wikipedia.org/wiki/Anova_Books Batsford]</ref>, which was assumed to contain the truth and, owing to Nunn, this is no longer so.
=See also=
* [[Endgame Tablebases]]
* [[Pawn Endgame]]
* [[Queen Endgame]]
* [[Tarrasch Rule]]
=Selected Publications=
* [https://en.wikipedia.org/wiki/Grigory_Levenfish Grigory Levenfish], [https://en.wikipedia.org/wiki/Vasily_Smyslov Vasily Smyslov] ('''1971, 1989'''). ''[http://books.google.com/books/about/Rook_endings.html?id=IlgYAQAAMAAJ&redir_esc=y Rook Endings]''. [https://en.wikipedia.org/wiki/Anova_Books Batsford]
* [[Coen Zuidema]] ('''1974'''). ''Chess: How to Program the Exceptions?'' Technical Report IW21/74, Department of Informatics, [https://en.wikipedia.org/wiki/Centrum_Wiskunde_%26_Informatica Mathematical Center Amdsterdam]. [http://oai.cwi.nl/oai/asset/9480/9480A.pdf pdf]
* [[Ken Thompson]] ('''1990'''). ''KQPKQ and KRPKR Endings''. [[ICGA Journal#13_4|ICCA Journal, Vol. 13, No. 4]]
* [[John Nunn]] ('''1992'''). ''Secrets of Rook Endings''. [https://en.wikipedia.org/wiki/Anova_Books Batsford], [http://www.newinchess.com/Secrets_of_Rook_Endings-p-511.html 2nd edition] ('''1999'''). [https://en.wikipedia.org/wiki/Gambit_Publications Gambit] <ref>[[Jaap van den Herik]], [[Bob Herschberg]]. ('''1993'''). ''J. Nunn: Secrets of Rook Endings''. [[ICGA Journal#16_2|ICCA Journal, Vol. 16, No. 2]]</ref>
* [[John Nunn]] ('''2010'''). ''[http://www.newinchess.com/Nunn_s_Chess_Endings__Volume_2-p-5053.html Nunn's Chess Endings, volume 2]''. [https://en.wikipedia.org/wiki/Gambit_Publications Gambit]
* [[John Nunn]] ('''2013'''). ''Discoveries in R+2P vs. R+P Endings''. [[ICGA Journal#36_3|ICGA Journal, Vol. 36, No. 3]] » [[Lomonosov Tablebases]]
* [[Guy Haworth]] ('''2017'''). ''Understanding Rook Endgames''. [[ICGA Journal#39_2|ICGA Journal, Vol. 39, No. 2]]
=Postings=
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=37640 Rook endgame: Wojtaszek-Navara] by [[Albert Silver]], [[CCC]], January 16, 2011
* [http://support.stockfishchess.org/discussions/problems/4543-wrong-evaluation-of-rook-endings-with-an-extra-pawn-on-one-side Re: Wrong evaluation of Rook endings with an extra pawn on one side] by [[Tord Romstad]], [[Stockfish#Support|Stockfish Support]], June 21, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=52775 Obligatory scaling] by [[Lyudmil Tsvetkov]], [[CCC]], June 27, 2014
==2015 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=55954 What's Essential Rook & Pawn Endgame Knowledge?] by [[Steve Maughan]], [[CCC]], April 10, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=57539 7 men Rook endgames H4 vs SF in recent TCEC stage 1b] by Nay Lin Tun, [[CCC]], September 07, 2015 » [[Lomonosov Tablebases]], [[TCEC Season 8]]
* [http://www.talkchess.com/forum/viewtopic.php?t=63911 advanced krkp function] by [[Daniel José Queraltó]], [[CCC]], May 06, 2017
=External Links=
* [https://en.wikipedia.org/wiki/Chess_endgame#Rook_and_pawn_endings Rook and pawn endings from Wikipedia]
* [http://www.chessbase.com/newsdetail.asp?newsid=7363 CBM Blog: 'Rook endings are always drawn?'] by [[Karsten Müller]], [[ChessBase|ChessBase News]], July 14, 2011
* [https://en.wikipedia.org/wiki/Rook_and_pawn_versus_rook_endgame Rook and pawn versus rook endgame from Wikipedia]
: [https://en.wikipedia.org/wiki/Lucena_position Lucena position from Wikipedia]
: [https://en.wikipedia.org/wiki/Philidor_position#Philidor.27s_position.2C_rook_and_pawn_versus_rook Philidor position from Wikipedia]
=References=
<references />
'''[[Endgame|Up one Level]]'''
[[Category:Samuel Bak]]
