By 1947, he had obtained professional 1 dan, being promoted to 2 dan in the same year. By 1955 he was 6 dan, and by 1963 he reached the peak of 9 dan.
Over time, he progressed from professional 1 dan to 2 dan in 1947, then to 6 dan by 1955, and ultimately attained the highest rank of 9 dan by 1963.