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the Berlin Defense
• Petrosian Powerbook: The opening repertoire of the 9th world champion as a variation tree
Ideal for players who don't have enough time to keep abreast with main line theory
The former World Champion
California Chess Journal - Volume 7-10 1993 - 1996 Chess Life Magazine the Berlin DefenseCalifornia Chess Journal Vol. 7 10 1993 1996 Edited by Carolyn Withgitt, Peter Yu, Eric Schiller, James Eade Photographs by Richard R. Shorman After Chess Voice magazine (1968 1985) ceased publication and left a void in Northern California chess, Hans Poschmann stepped up to create and edit the California Chess Journal (1986 2004). The August September 1993 article on the 1993 U. S. Junior Championship reported that U. C. Berkeley student, Valdis
