, also known as Masao Iwata, was a Japanese professional Go player.

Biography Iwata was a 9-dan Go professional from the Nagoya branch of the Nihon Ki-in. He won his 800th professional game in 2004. He retired from tournament play in 2011. He died in 2022 at the age of 96.

Promotion record

Titles & runners-up Title Years Held Current 6 Okan 1967, 1969, 1970, 1976, 1979, 1980

Title Years Lost Current 6 Okan 1965, 1972, 1977, 1981, 1985, 1989

See also

International Go Federation List of Go organizations List of professional Go tournaments

References