MCO

Modern Chess Openings, or the chess player’s Bible, published as its first edition, edited by R.C. Griffith (1872-1955), in 1911. Other editions were issued in 1913, 1916, 1920, 1925, 1932, 1939 (Fine), 1946, 1957, 1965 (Evans), 1972 and the twelfth in 1982.