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- Lacny abstract "The Lacny or Lacny cycle is a chess problem theme named after Ľudovít Lačný, the first person to demonstrate the idea in 1949.It is an example of lines of play being cyclically related: in one phase of play, the Black defences a, b and c are answered by the White mates A, B and C respectively; in another phase, those same defences a, b and c are answered by the White mates B, C and A respectively.The theme can be understood by reference to the problem to the right: this is the first problem to demonstrate the idea, by Lacny himself (first prize at the Przepiorka Memorial, 1949); it has been much-reproduced. The set play is:1...Nh2 [a] 2.Qd4# [A]1...c1=Q [b] 2.Ng2# [B]1...c3 [c] 2.Qe4# [C]The key to the solution is 1.Nd2 (threatening 2.Nf1#), after which the mates are changed thus:1...Nh2 [a] 2.Ng2# [B]1...c1=Q [b] 2.Qe4# [C]1...c3 [c] 2.Qd4# [A]As well as in set play (as in this example) the theme can be shown in tries, more than one solution or twins.The scheme can be expanded to include more defences; in a fivefold Lacny, for example, the defences a, b, c, d and e are met with the mates A, B, C, D and E respectively in one phase and B, C, D, E and A respectively in another. The cycle can also be extended over three phases to make a complete Lacny cycle; here, the defences a, b and c are answered by the mates A, B and C respectively in one phase; by B, C and A respectively in another; and by C, A and B respectively in a third. This is considerably harder to achieve than the \"simple\" Lacny, and there are relatively few examples.In the related threat Lacny, short-cut Lacny or Dombro-Lacny, in one phase A is threatened, and defence b leads to mate B while defence c leads to mate C; in another phase B is threatened and defence b leads to mate C while defence c leads to mate A. Once, problems following this scheme were also called Lacnys, but now a distinction tends to be drawn between the two (Peter Gvozdjak in Cyclone suggests this scheme should be called the Shedey cycle after its originator, Sergei Shedey). There are a number of other themes featuring cyclic play in different phases, including the Kiss and Djurasevic cycles.".
- Lacny wikiPageExternalLink oldpages.htm.
- Lacny wikiPageID "1403295".
- Lacny wikiPageLength "2930".
- Lacny wikiPageOutDegree "12".
- Lacny wikiPageRevisionID "641781440".
- Lacny wikiPageWikiLink Category:1949_in_chess.
- Lacny wikiPageWikiLink Category:Chess_problems.
- Lacny wikiPageWikiLink Chess_problem.
- Lacny wikiPageWikiLink Dombro-Lacny.
- Lacny wikiPageWikiLink Kiss_(chess).
- Lacny wikiPageWikiLink Phase_of_play.
- Lacny wikiPageWikiLink Sergei_Shedey.
- Lacny wikiPageWikiLink Set_play.
- Lacny wikiPageWikiLink Try_(chess).
- Lacny wikiPageWikiLink Twin_(chess).
- Lacny wikiPageWikiLink Đurašević.
- Lacny wikiPageWikiLink Ľudovít_Lačný.
- Lacny wikiPageWikiLinkText "Lacny".
- Lacny wikiPageUsesTemplate Template:Chess_diagram.
- Lacny wikiPageUsesTemplate Template:Chess_notation.
- Lacny subject Category:1949_in_chess.
- Lacny subject Category:Chess_problems.
- Lacny hypernym Theme.
- Lacny type Single.
- Lacny comment "The Lacny or Lacny cycle is a chess problem theme named after Ľudovít Lačný, the first person to demonstrate the idea in 1949.It is an example of lines of play being cyclically related: in one phase of play, the Black defences a, b and c are answered by the White mates A, B and C respectively; in another phase, those same defences a, b and c are answered by the White mates B, C and A respectively.The theme can be understood by reference to the problem to the right: this is the first problem to demonstrate the idea, by Lacny himself (first prize at the Przepiorka Memorial, 1949); it has been much-reproduced. ".
- Lacny label "Lacny".
- Lacny sameAs Q6468764.
- Lacny sameAs Lačného_téma.
- Lacny sameAs m.04zsww.
- Lacny sameAs Q6468764.
- Lacny wasDerivedFrom Lacny?oldid=641781440.
- Lacny isPrimaryTopicOf Lacny.