1.0365Chesshttps://www.365chess.com/viewEric AFM Briffozhttps://www.365chess.com/view/author/bitopar/rich600338<blockquote class="wp-embedded-content" data-secret="J4stICnu9G"><a href="https://www.365chess.com/view/shop/alapin-sicilian-mat-kolosowski/">Master the Alapin Sicilian for White by IM Mateusz Kolosowski</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.365chess.com/view/shop/alapin-sicilian-mat-kolosowski/embed/#?secret=J4stICnu9G" width="600" height="338" title="“Master the Alapin Sicilian for White by IM Mateusz Kolosowski” — 365Chess" data-secret="J4stICnu9G" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(c,d){"use strict";var e=!1,o=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},c.wp.receiveEmbedMessage);else if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(!t);else if(!(t.secret||t.message||t.value));else if(/[^a-zA-Z0-9]/.test(t.secret));else{for(var r,s,a,i=d.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=d.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=new RegExp("^https?:$","i"),l=0;l<n.length;l++)n[l].style.display="none";for(l=0;l<i.length;l++)if(r=i[l],e.source!==r.contentWindow);else{if(r.removeAttribute("style"),"height"===t.message){if(1e3<(s=parseInt(t.value,10)))s=1e3;else if(~~s<200)s=200;r.height=s}if("link"===t.message)if(s=d.createElement("a"),a=d.createElement("a"),s.href=r.getAttribute("src"),a.href=t.value,!o.test(a.protocol));else if(a.host===s.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(o);else{o=!0;for(var e,t,r,s=-1!==navigator.appVersion.indexOf("MSIE 10"),a=!!navigator.userAgent.match(/Trident.*rv:11\./),i=d.querySelectorAll("iframe.wp-embedded-content"),n=0;n<i.length;n++){if(!(r=(t=i[n]).getAttribute("data-secret")))r=Math.random().toString(36).substr(2,10),t.src+="#?secret="+r,t.setAttribute("data-secret",r);if(s||a)(e=t.cloneNode(!0)).removeAttribute("security"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:"ready",secret:r},"*")}}}}(window,document); </script> https://www.365chess.com/view/wp-content/uploads/2025/09/18971.jpg12541254In this 4-hour comprehensive video course, International Master Mat Kolosowski meticulously walks you through the most important lines and strategies of the Alapin Sicilian. With his expertise, you will gain the knowledge and confidence to incorporate this formidable opening into your games, whether you are competing online or over the board.