Gata Kamsky is an American Grandmaster born in 1974. He jointly won the 1987 Chess Junior Championship in 1987 and 1988.
He won 3 U.S. Championships.
From 1996 to 2004 he stopped competing to focus on his medical and later law degree, after his comeback he achieved his peak rating of 2745.
Boris Gelfand is an Israeli Grandmaster born 1968. He won the Supertournaments of Biel and Wijk an Zee twice (1992,1994).
He recently won the 2011 Canidate Tournament and will play Viswanathan Anand in the 2012 World Championship.
A very complicated and unusual position in a Sicilian.
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