Career
After World World War II, he played six-times in Polish championships (1946–1953). Grynfeld represented Poland in 10th Chess Olympiad at Helsinki 1952, winning the silver medal at second reserve board (+5 –1 =4) there. He also played for Poland in friendly matches: POL–CSR at Katowice 1949, POL–HUN at Warsaw 1949, and POL–HUN–German Democratic Republic at Görlitz 1952.
He later emigrated to Israel.
