{"id":592,"date":"2021-03-25T07:18:41","date_gmt":"2021-03-25T07:18:41","guid":{"rendered":"https:\/\/problemista.eu\/en\/?p=592"},"modified":"2021-11-19T08:01:26","modified_gmt":"2021-11-19T08:01:26","slug":"iwanow-theme","status":"publish","type":"post","link":"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/","title":{"rendered":"Iwanow theme"},"content":{"rendered":"<p>Dual avoidance in a selfmate. Black in defense opens the line for the long-distance white piece, which forces White to choose from at least two such continuations that will neutralize the opening of the line.<\/p>\n<p><a href=\"http:\/\/problemista.eu\/wp-content\/uploads\/2021\/11\/iwanow-theme.pdf\" rel=\"noopener\" target=\"_blank\">An article about the Iwanow theme in PDF format<\/a><br \/>\n(<a href=\"http:\/\/www.konikowski.net\/teoria.php\" rel=\"noopener\" target=\"_blank\">source<\/a>).<\/p>\n<p style=\"text-align: center;\">Iwanow, Eugeniusz<br \/>Problemista, 1966<br \/>1st Prize<\/p>\n\n\n<p class=\"rpbchessboard-spacerBefore\"><\/p>\n\n<div id=\"rpbchessboard-6aa99c5670695-1\" class=\"rpbchessboard-chessboard rpbchessboard-diagramAlignment-center\">\n\t<noscript>\n\t\t<div class=\"rpbchessboard-javascriptWarning\">\n\t\t\tYou must activate JavaScript to enhance chess diagram visualization.\t\t<\/div>\n\t<\/noscript>\n\t<div class=\"rpbchessboard-chessboardAnchor\"><\/div>\n\t<script type=\"text\/javascript\">\n\t\tjQuery(document).ready(function($) {\n\t\t\tvar selector = '#' + \"rpbchessboard-6aa99c5670695-1\" + ' .rpbchessboard-chessboardAnchor';\n\t\t\tRPBChessboard.renderFEN($(selector), {\"position\":\"1B2B2Q\\\/6nN\\\/4R3\\\/5R1P\\\/8\\\/4PPPk\\\/p7\\\/rn5K w - - 0 1\",\"squareSize\":32,\"coordinateVisible\":true,\"colorset\":\"original\",\"pieceset\":\"cburnett\"});\n\t\t});\n\t<\/script>\n<\/div>\n\n<p class=\"rpbchessboard-spacerAfter\"><\/p>\n\n<p style=\"text-align: center;\">selfmate in 2 moves<\/p>\n<p><!--nextpage--><\/p>\n<p style=\"text-align: center;\">Iwanow, Eugeniusz<br \/>Problemista, 1966<br \/>1st Prize<\/p>\n\n\n<p class=\"rpbchessboard-spacerBefore\"><\/p>\n\n<div id=\"rpbchessboard-6aa99c5670695-2\" class=\"rpbchessboard-chessboard rpbchessboard-diagramAlignment-center\">\n\t<noscript>\n\t\t<div class=\"rpbchessboard-javascriptWarning\">\n\t\t\tYou must activate JavaScript to enhance chess diagram visualization.\t\t<\/div>\n\t<\/noscript>\n\t<div class=\"rpbchessboard-chessboardAnchor\"><\/div>\n\t<script type=\"text\/javascript\">\n\t\tjQuery(document).ready(function($) {\n\t\t\tvar selector = '#' + \"rpbchessboard-6aa99c5670695-2\" + ' .rpbchessboard-chessboardAnchor';\n\t\t\tRPBChessboard.renderFEN($(selector), {\"position\":\"1B2B2Q\\\/6nN\\\/4R3\\\/5R1P\\\/8\\\/4PPPk\\\/p7\\\/rn5K w - - 0 1\",\"squareSize\":32,\"coordinateVisible\":true,\"colorset\":\"original\",\"pieceset\":\"cburnett\"});\n\t\t});\n\t<\/script>\n<\/div>\n\n<p class=\"rpbchessboard-spacerAfter\"><\/p>\n\n<p style=\"text-align: center;\">selfmate in 2 moves<\/p>\n\n\n<p class=\"rpbchessboard-spacerBefore\"><\/p>\n\n<div id=\"rpbchessboard-6aa99c5670695-3\" class=\"rpbchessboard-chessgame\">\n\t<noscript>\n\t\t<div class=\"rpbchessboard-javascriptWarning\">\n\t\t\tYou must activate JavaScript to enhance chess game visualization.\t\t<\/div>\n\t<\/noscript>\n\t<div class=\"rpbchessboard-chessgameAnchor\"><\/div>\n\t<script type=\"text\/javascript\">\n\t\tjQuery(document).ready(function($) {\n\t\t\tvar selector = '#' + \"rpbchessboard-6aa99c5670695-3\" + ' .rpbchessboard-chessgameAnchor';\n\t\t\tRPBChessboard.renderPGN($(selector), {\"pgn\":\"[FEN \\\"1B2B2Q\\\/6nN\\\/4R3\\\/5R1P\\\/8\\\/4PPPk\\\/p7\\\/rn5K w - - 0 1\\\"]\\r\\n\\r\\n1. Bd7! Nxf5 \\r\\n\\r\\n(1... Nxe6 2. Rf6 {(R~??)} Nd2#) \\r\\n\\r\\n(1... Ne8 2. Qxe8 {(Bxe8??)} Nd2#) \\r\\n\\r\\n(1... Nxh5 2. Nf6 {(Nf8??)} Nd2#) \\r\\n\\r\\n2. Rf6 {(R~??)} Nd2# *\",\"nboSquareSize\":32,\"idoSquareSize\":32,\"nboCoordinateVisible\":true,\"idoCoordinateVisible\":true,\"nboColorset\":\"original\",\"idoColorset\":\"original\",\"nboPieceset\":\"cburnett\",\"idoPieceset\":\"cburnett\",\"nboAnimated\":true,\"nboMoveArrowVisible\":true,\"nboMoveArrowColor\":\"b\",\"pieceSymbols\":\"native\",\"navigationBoard\":\"frame\",\"withFlipButton\":false,\"withDownloadButton\":false});\n\t\t});\n\t<\/script>\n<\/div>\n\n<p class=\"rpbchessboard-spacerAfter\"><\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>Dual avoidance in a selfmate. Black in defense opens the line for the long-distance white piece, which forces White to choose from at least two such continuations that will neutralize the opening of the line. An article about the Iwanow theme in PDF format (source). Iwanow, EugeniuszProblemista, 19661st Prize selfmate in 2 moves<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[9,10,17],"class_list":["post-592","post","type-post","status-publish","format-standard","hentry","category-glossary","tag-chess-composition","tag-chess-problems","tag-theme"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v16.6.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Iwanow theme - Problemista<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/\" \/>\n<link rel=\"next\" href=\"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/2\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Iwanow theme - Problemista\" \/>\n<meta property=\"og:description\" content=\"Dual avoidance in a selfmate. Black in defense opens the line for the long-distance white piece, which forces White to choose from at least two such continuations that will neutralize the opening of the line. An article about the Iwanow theme in PDF format (source). Iwanow, EugeniuszProblemista, 19661st Prize selfmate in 2 moves\" \/>\n<meta property=\"og:url\" content=\"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/\" \/>\n<meta property=\"og:site_name\" content=\"Problemista\" \/>\n<meta property=\"article:published_time\" content=\"2021-03-25T07:18:41+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-11-19T08:01:26+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/problemista.eu\/en\/#website\",\"url\":\"https:\/\/problemista.eu\/en\/\",\"name\":\"Problemista\",\"description\":\"Blog about chess problems\",\"publisher\":{\"@id\":\"https:\/\/problemista.eu\/en\/#\/schema\/person\/a232ae49fa90d44f7d423812f6d31678\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/problemista.eu\/en\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-GB\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/#webpage\",\"url\":\"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/\",\"name\":\"Iwanow theme - Problemista\",\"isPartOf\":{\"@id\":\"https:\/\/problemista.eu\/en\/#website\"},\"datePublished\":\"2021-03-25T07:18:41+00:00\",\"dateModified\":\"2021-11-19T08:01:26+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\"}]},{\"@type\":\"Article\",\"@id\":\"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/#webpage\"},\"author\":{\"@id\":\"https:\/\/problemista.eu\/en\/#\/schema\/person\/a232ae49fa90d44f7d423812f6d31678\"},\"headline\":\"Iwanow theme\",\"datePublished\":\"2021-03-25T07:18:41+00:00\",\"dateModified\":\"2021-11-19T08:01:26+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/#webpage\"},\"wordCount\":127,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/problemista.eu\/en\/#\/schema\/person\/a232ae49fa90d44f7d423812f6d31678\"},\"keywords\":[\"chess composition\",\"chess problems\",\"theme\"],\"articleSection\":[\"Glossary\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/problemista.eu\/en\/2021\/03\/25\/iwanow-theme\/#respond\"]}]},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\/\/problemista.eu\/en\/#\/schema\/person\/a232ae49fa90d44f7d423812f6d31678\",\"name\":\"bogusz\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/problemista.eu\/en\/#personlogo\",\"inLanguage\":\"en-GB\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/dcc33d8ca47ed65ac501362ccffe8b7d?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/dcc33d8ca47ed65ac501362ccffe8b7d?s=96&d=mm&r=g\",\"caption\":\"bogusz\"},\"logo\":{\"@id\":\"https:\/\/problemista.eu\/en\/#personlogo\"},\"sameAs\":[\"http:\/\/problemista.eu\/en\"],\"url\":\"https:\/\/problemista.eu\/en\/author\/bogusz\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","_links":{"self":[{"href":"https:\/\/problemista.eu\/en\/wp-json\/wp\/v2\/posts\/592"}],"collection":[{"href":"https:\/\/problemista.eu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/problemista.eu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/problemista.eu\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/problemista.eu\/en\/wp-json\/wp\/v2\/comments?post=592"}],"version-history":[{"count":5,"href":"https:\/\/problemista.eu\/en\/wp-json\/wp\/v2\/posts\/592\/revisions"}],"predecessor-version":[{"id":1250,"href":"https:\/\/problemista.eu\/en\/wp-json\/wp\/v2\/posts\/592\/revisions\/1250"}],"wp:attachment":[{"href":"https:\/\/problemista.eu\/en\/wp-json\/wp\/v2\/media?parent=592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/problemista.eu\/en\/wp-json\/wp\/v2\/categories?post=592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/problemista.eu\/en\/wp-json\/wp\/v2\/tags?post=592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}