{"version":"1.0","provider_name":"365Chess","provider_url":"https:\/\/www.365chess.com\/view","author_name":"Eric AFM Briffoz","author_url":"https:\/\/www.365chess.com\/view\/author\/bitopar\/","title":"Calculation Masterclass with IM Erlend Mikalsen - 365Chess","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\"><a href=\"https:\/\/www.365chess.com\/view\/shop\/calculation-masterclass-with-im-erlend-mikalsen\/\">Calculation Masterclass with IM Erlend Mikalsen<\/a><\/blockquote>\n<script type='text\/javascript'>\n<!--\/\/--><![CDATA[\/\/><!--\n\t\t\/*! This file is auto-generated *\/\n\t\t!function(c,d){\"use strict\";var e=!1,n=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},!c.wp.receiveEmbedMessage)if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(t)if(t.secret||t.message||t.value)if(!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var r,a,i,s=d.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),n=d.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),o=0;o<n.length;o++)n[o].style.display=\"none\";for(o=0;o<s.length;o++)if(r=s[o],e.source===r.contentWindow){if(r.removeAttribute(\"style\"),\"height\"===t.message){if(1e3<(i=parseInt(t.value,10)))i=1e3;else if(~~i<200)i=200;r.height=i}if(\"link\"===t.message)if(a=d.createElement(\"a\"),i=d.createElement(\"a\"),a.href=r.getAttribute(\"src\"),i.href=t.value,i.host===a.host)if(d.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener(\"message\",c.wp.receiveEmbedMessage,!1),d.addEventListener(\"DOMContentLoaded\",t,!1),c.addEventListener(\"load\",t,!1);function t(){if(!n){n=!0;for(var e,t,r=-1!==navigator.appVersion.indexOf(\"MSIE 10\"),a=!!navigator.userAgent.match(\/Trident.*rv:11\\.\/),i=d.querySelectorAll(\"iframe.wp-embedded-content\"),s=0;s<i.length;s++){if(!(e=i[s]).getAttribute(\"data-secret\"))t=Math.random().toString(36).substr(2,10),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t);if(r||a)(t=e.cloneNode(!0)).removeAttribute(\"security\"),e.parentNode.replaceChild(t,e)}}}}(window,document);\n\/\/--><!]]>\n<\/script><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.365chess.com\/view\/shop\/calculation-masterclass-with-im-erlend-mikalsen\/embed\/\" width=\"600\" height=\"338\" title=\"&#8220;Calculation Masterclass with IM Erlend Mikalsen&#8221; &#8212; 365Chess\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe>","thumbnail_url":"https:\/\/www.365chess.com\/view\/wp-content\/uploads\/2025\/02\/24621.jpg","thumbnail_width":1254,"thumbnail_height":1254,"description":"In Calculation Masterclass, IM Erlend teaches you his unique calculation philosophy which blends intuition, forcing moves and brute force into a tool for seeing more deeply into chess positions than you ever thought you could. You'll discover how to instantly spot the critical moments where the calculation is needed, how to calculate precisely when defending against an attack, tactical wizardry and even the 5 most common calculation mistakes."}