What is a GM?

What is a grandmaster? Errol Tiwari, writing for Guyana's Stabroek News, gives a short history.

But Errol also looks to the future of chess in his own country. Says he: "Think about Barack Obama. He has inspired us to believe in ourselves; to believe that we can achieve things which we once thought were impossible. Why should Guyana be satisfied only with hosting a grandmaster? We want more. We want to be that grandmaster. We want to walk proudly among other nations upon the world stage of chess."