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- Babson_task abstract "The Babson task is a kind of chess problem of the form \"White to move and mate Black in n moves against any defence\" (a directmate) with the following play:White makes his first move.Black defends by promoting a pawn to a queen, rook, bishop or knight.White responds by also promoting a pawn to queen, rook, bishop or knight respectively. That is, if Black promoted to rook, so does White, if Black promoted to knight, so does White and so on. No other promotion (or any other move) leads to a forced mate in the stipulated number of moves.The task is named after the first person to speculate about the possibility of such a problem, Joseph Ney Babson. It is regarded as one of the greatest challenges for a composer of chess problems to devise a satisfying Babson task problem, and for around half a century the task was considered to be near-impossible in directmate form.Technically, the task can be regarded as a form of Allumwandlung with corresponding promotions by Black and White. An Allumwandlung is a problem which contains, at some point in the solution, promotions to each of the four possible pieces—such problems had already been composed before Babson devised his task.".
- Babson_task wikiPageExternalLink babso.
- Babson_task wikiPageExternalLink Babson_docu.pdf.
- Babson_task wikiPageExternalLink puzz13a.htm.
- Babson_task wikiPageExternalLink viewtopic.php?f=19&t=560.
- Babson_task wikiPageExternalLink ~yarosh.
- Babson_task wikiPageExternalLink babsonsons.htm.
- Babson_task wikiPageExternalLink babson1.htm.
- Babson_task wikiPageExternalLink kazan.htm.
- Babson_task wikiPageExternalLink babs.html.
- Babson_task wikiPageID "213522".
- Babson_task wikiPageLength "12628".
- Babson_task wikiPageOutDegree "36".
- Babson_task wikiPageRevisionID "665299207".
- Babson_task wikiPageWikiLink 64_(magazine).
- Babson_task wikiPageWikiLink Allumwandlung.
- Babson_task wikiPageWikiLink Association_football.
- Babson_task wikiPageWikiLink Bishop_(chess).
- Babson_task wikiPageWikiLink Category:Chess_problems.
- Babson_task wikiPageWikiLink Chess_problem.
- Babson_task wikiPageWikiLink De_man_die_de_Babson_task_wilde_maken.
- Babson_task wikiPageWikiLink Die_Schwalbe.
- Babson_task wikiPageWikiLink Fairy_chess_piece.
- Babson_task wikiPageWikiLink Glossary_of_chess_problems.
- Babson_task wikiPageWikiLink Henry_Wald_Bettmann.
- Babson_task wikiPageWikiLink Jeremy_Morse.
- Babson_task wikiPageWikiLink Joseph_Ney_Babson.
- Babson_task wikiPageWikiLink Kazan.
- Babson_task wikiPageWikiLink Knight_(chess).
- Babson_task wikiPageWikiLink Leonid_Yarosh.
- Babson_task wikiPageWikiLink Pawn_(chess).
- Babson_task wikiPageWikiLink Peter_Hoffmann_(chess_composer).
- Babson_task wikiPageWikiLink Pierre_Drumare.
- Babson_task wikiPageWikiLink Promotion_(chess).
- Babson_task wikiPageWikiLink Queen_(chess).
- Babson_task wikiPageWikiLink Rook_(chess).
- Babson_task wikiPageWikiLink Selfmate.
- Babson_task wikiPageWikiLink Shakhmaty_v_SSSR.
- Babson_task wikiPageWikiLink Stalemate.
- Babson_task wikiPageWikiLink The_Oxford_Companion_to_Chess.
- Babson_task wikiPageWikiLink Tim_Krabbé.
- Babson_task wikiPageWikiLink Wolfgang_Pauly.
- Babson_task wikiPageWikiLinkText "Babson task".
- Babson_task wikiPageUsesTemplate Template:=.
- Babson_task wikiPageUsesTemplate Template:Chess_diagram.
- Babson_task wikiPageUsesTemplate Template:Chess_notation.
- Babson_task wikiPageUsesTemplate Template:Cite_book.
- Babson_task wikiPageUsesTemplate Template:Language_icon.
- Babson_task wikiPageUsesTemplate Template:Refbegin.
- Babson_task wikiPageUsesTemplate Template:Refend.
- Babson_task wikiPageUsesTemplate Template:Reflist.
- Babson_task wikiPageUsesTemplate Template:Unordered_list.
- Babson_task subject Category:Chess_problems.
- Babson_task hypernym Kind.
- Babson_task comment "The Babson task is a kind of chess problem of the form \"White to move and mate Black in n moves against any defence\" (a directmate) with the following play:White makes his first move.Black defends by promoting a pawn to a queen, rook, bishop or knight.White responds by also promoting a pawn to queen, rook, bishop or knight respectively. That is, if Black promoted to rook, so does White, if Black promoted to knight, so does White and so on.".
- Babson_task label "Babson task".
- Babson_task sameAs Q797773.
- Babson_task sameAs Babsonova_úloha.
- Babson_task sameAs Babson-opgaven.
- Babson_task sameAs Babson-Task.
- Babson_task sameAs m.01f8rq.
- Babson_task sameAs Бэбсон-таск.
- Babson_task sameAs Babson_task.
- Babson_task sameAs Бебсон-таск.
- Babson_task sameAs Q797773.
- Babson_task wasDerivedFrom Babson_task?oldid=665299207.
- Babson_task isPrimaryTopicOf Babson_task.