|Country|| Soviet Union
|Born||19 December 1940
Riga, Latvian SSR
|World Champion||World Senior Champion, 2002|
Born into a Polish family (his uncle was a Catholic bishop), he came first in the Riga Championship of 1967, winning all thirteen games. He tied for 1st-3rd at Pärnu 1967. He thrice shared 1st in Latvian Chess Championship (1969, 1974, 1985).
Petkēvičs played for Latvia in Chess Olympiads:
- In 1994, at first reserve board in the 31st Chess Olympiad in Moscow (+1 –1 =4);
- In 1996, at second reserve board in the 32nd Chess Olympiad in Yerevan (+4 –1 =2);
- In 1998, at first reserve board in the 33rd Chess Olympiad in Elista (+2 –0 =3).
Petkēvičs was awarded the International Master (IM) title in 1980, and the GM title in 2002.
- Pan Józef
- "Russian Chess Base". Archived from the original on October 27, 2009. Retrieved 2009-10-27.
- Russian Chess Base
- OlimpBase :: the encyclopaedia of team chess
- TeleSchach / Senioren Weltmeisterschaft
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