Atama no Taisou

Atama no Taisou (Japanese: 頭の体操, lit. Head Gymnastics) is a puzzle collecting books series that was released by Kobunsha, and the author is Akira Tago. As of 2010, there were 23 regular volumes with an e-book volume released.

The first volume was published in 1966 and sold more than 2.5 million.^[1] The series has sold 12 million copies^[2] and become a best-seller.

References

1. "『頭の体操』の時代ふたたび。　モノ語り６" (in Japanese).
2. "「頭の体操」から「さおだけ屋」へ" (in Japanese). Yomiuri Shimbun. September 16, 2005.