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Diesen, Mark

Mark Diesen, born September 16, 1957, is an International Master (1976), U.S. Co-Junior Champion (with Michael Rohde) and World Junior Champion in 1976 (played in Groningen, Holland).  He was born in Buffalo, NY and grew up in Maryland. He became the first U.S. player to win the World Junior Championship since Bill Lombardy did it in 1957.  At 19, he was the youngest U.S. International Master since Fischer.  In 1973/74, he took 1st place at the Hastings Challengers.  In 1980 he played in the U.S. Championship, but fell and got hurt after 3 rounds, then withdrew.   He graduated from the University of Tennessee with a degree in chemical engineering.  He worked for Shell Oil, Pennzoil, and Noble Energy.  He won the Louisiana state chess championship in 1986, 1987, and 1988 while living in New Orleans.  He won the Texas state championship in 2001 and 2003.  He died in Conroe, Texas on Dec 9, 2008 of a  heart attack.

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