a Japanese computer scientist and Shogi programmer. He is co-author of the Shogi engine Gekisashi , which won the Gold medal at the 15th Computer Olympiad, Shogi 2010 in Kanazawa.
- Daisaku Yokoyama, Yoshimasa Tsuruoka, Takashi Maruyama, Takashi Chikayama (2002). Implementation of "Gekisashi". A Computer Shogi Player. Joho Shori Gakkai Natsu no Puroguramingu, Shinpojiumu Hokokushu (Japanese)