{"id":6900,"date":"2019-07-30T12:26:55","date_gmt":"2019-07-30T11:26:55","guid":{"rendered":"https:\/\/vrsk.dk\/skak\/?p=6900"},"modified":"2019-07-30T19:52:54","modified_gmt":"2019-07-30T18:52:54","slug":"genveje-i-skak","status":"publish","type":"post","link":"https:\/\/vrsk.dk\/skak\/genveje-i-skak\/","title":{"rendered":"Genveje i skak"},"content":{"rendered":"<p><span style=\"font-size: 12px;\">af Peter Schleisner<\/span><\/p>\n<p>Som en slags opf\u00f8lgning p\u00e5 Eivinds udm\u00e6rkede indslag p\u00e5 hjemmesiden for nylig om genveje til gunstigt spil og Alechins kanon\u00a0 (<a href=\"https:\/\/vrsk.dk\/skak\/aljechins-kanon\/\">https:\/\/vrsk.dk\/skak\/aljechins-kanon\/<\/a>) vil jeg hermed gerne supplere med yderligere hj\u00e6lp til succes:<\/p>\n<p>Du kender sikkert situationen: Du overvejer at ofre en brik for at udf\u00f8re en snedig kombination. Gevinsten ved gunstigt udfald er stor, men stillingen er kompliceret, og det kan jo g\u00e5 galt. Her er s\u00e5 en hj\u00e6lp til hurtigt og sikkert at tr\u00e6ffe det rette valg. Man anvender simpelthen f\u00f8lgende formel udt\u00e6nkt af IM og tidligere engelsk mester William Hartston:<\/p>\n<p>V = G\/n<sup>2<\/sup> \u2013 O<\/p>\n<p>Formlen kan anvendes p\u00e5 alle kombinationer udf\u00f8rt af den gennemsnitlige klubspiller og bygger p\u00e5 den kendsgerning, at sandsynligheden for at en spiller regner galt er direkte proportional med kvadratet p\u00e5 det antal tr\u00e6k, han pr\u00f8ver at regne fremad.<\/p>\n<p>Der skal inds\u00e6ttes f\u00f8lgende v\u00e6rdier for at finde den \u00f8nskede v\u00e6rdi af V: G er v\u00e6rdien af en gevinst (udm\u00e5lt som svarende til det vundne antal b\u00f8nder), n er antallet af tr\u00e6k, der skal gennemregnes i den givne kombination og O (ogs\u00e5 udm\u00e5lt i b\u00f8nder) er v\u00e6rdien af det offer der kr\u00e6ves. Dersom v\u00e6rdien af V er positiv er kombinationen v\u00e6rd at give sig i kast med, hvorimod man nok b\u00f8r fors\u00f8ge at finde en anden plan, hvis V er negativ.<\/p>\n<p>Et eksempel: Du overvejer at ofre en bonde (O=1) for i en 2-tr\u00e6ks kombination at vinde en dronning (G=9). Hvis man inds\u00e6tter de relevante v\u00e6rdier f\u00e5s V =+ 1,25, (bare g\u00e5 i gang) hvorimod resultatet, hvis man satser p\u00e5 kun at vinde en l\u00f8ber, er -0,25 (om igen).<\/p>\n<p>Simpelt og effektivt!<\/p>\n<p>(NB: Evt. klager endsige erstatningskrav overfor undertegnede dersom resultatet ikke er som beregnet vil umiddelbart blive afvist)<\/p>\n<p>Fortsat god sommer<\/p>\n<p>Peter Schleisner<\/p>\n","protected":false},"excerpt":{"rendered":"<p>af Peter Schleisner Som en slags opf\u00f8lgning p\u00e5 Eivinds udm\u00e6rkede indslag p\u00e5 hjemmesiden for nylig om genveje til gunstigt spil og Alechins kanon\u00a0 (https:\/\/vrsk.dk\/skak\/aljechins-kanon\/) vil jeg hermed gerne supplere med &hellip; <a href=\"https:\/\/vrsk.dk\/skak\/genveje-i-skak\/\" class=\"more-link\">L\u00e6s videre <span class=\"screen-reader-text\">Genveje i skak<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[41],"tags":[],"class_list":["post-6900","post","type-post","status-publish","format-standard","hentry","category-diverse"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - 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