Hiroshi Kobayashi is a Japanese professional shogi player ranked 8-dan.
Shogi professional
Promotion history Kobayashi's promotion history is as follows: • 6-kyū: 1990 • 1-dan: 1993 • 4-dan: April 1, 1997 • 5-dan: April 1, 2001 • 6-dan: April 5, 2006 • 7-dan: October 12, 2011 • 8-dan: December 12, 2023 ==References==