Rank: 9p
Country: Japan

Oya Koichi's career highlights

  • Born on 3/22/1966.
  • In 1980, became 1p.
  • In 2001, advanced to 9p.
  • In 1993, won 8th NEC Shun-Ei Tournament champion.

Oya Koichi's games on GGW

No games are available for this player.