He was posthumously promoted to 9 dan by the Nihon Ki - in and Kansai Ki - in in 2009 , 67 years after his death .
Kubomatsu was known for starting on the tengen , the center point of the board .
Kubomatsu was posthumously promoted to 9 dan by the Nihon Ki - in and Kansai Ki - in in 2009 , 67 years after Kubomatsu 's death .
Kubomatsu was known for starting on the tengen , the center point of the board .