3-3 point 意味

• 《囲碁》三々｛さんさん｝
  

例文

1. attracting the national attention , seigen made his first move which was the san-san-uchi (literally , placing a stone at a 3-3 point ) that the honinbo school prohibited .
   日本中の注目が集まる中、呉は第一着に本因坊家の禁手とされる三々打ち。