Double check

My cousin, M Shankaranarayana Bhat, a late entrant to the world of computers seems to have mustered some free time to visit my blog and go through the contents. He was generous while complimenting my effort to publish the blog in web. He observed that there are no article on Chess and sought my explanation. His comment has awakened me from deep slumber and forced me to run for cover. To use a phrase of chess-
“Even the laziest King flees wildly at the face of a double check!”