Jose Capablanca - History Part 3 (Defeat of the Ruy Lopez - Marshall variation)
World War I began in midsummer 1914, and international chess was virtually stopped for more than four years. Capablanca spent the war years mainly in the United States, and played several events, winning all of them, but these fields were not that strong. At New York 1915, he won with 13/14, a point ahead of Frank Marshall. This was a 2726 performance.  At New York 1916, Capablanca won with 14/17, ahead of David Janowsky (11), Oscar Chajes (10½), Borislav Kostic (10), and Abraham Kupchik (10). This was a 2710 performance. Then at New York 1918, Capablanca won with 10½/12, ahead of Kostic and Marshall. This was a 2833 performance.  In this tournament, Capablanca, with the white pieces, faced Marshall, who unveiled his Marshall Gambit variation of the Ruy Lopez for the first time. Capablanca accepted the gambit and went on to win the game; it was later rumored that Marshall had analyzed the line for ten years before using it. This variation remains popular among top Grandmasters of the present day, nearly 90 years later.