is a Japanese professional shogi player ranked 8-dan.
The promotion history for Shoshi is as follows:
Shoshi received the Japan Shogi Association's "25 Years Service Award" in 2010 for being an active professional for 25 years.
Shoshi has written several books on shogi, including a standard manual on shogi handicap opening theory.
Shoshi also plays xiangqi representing Japan in world tournaments and won the first prize in 1999, 2003, 2007, and 2015 in the non-Chinese/Vietnamese category. He holds the rank of Federation Master.