The five professional shogi players played against five syogi softwares.
Mr. Shinichi Sato is a 4th grade ranking, but he lost ponanza shogi software. Active shogi player has lost shogi software at first. About chess, a chess player had lost at that time in 1997. Any match rules are no handycap, four hours allowed time.
ex-shogi players, Mr. Kunio Yonenaga had lost a shogi software in Jan 2012 at professional shogi player versus shogi software, but shogi player Mr. Akira Watanabe, he is one of top class group, he had 3 major tiltles, he had won a shogi software.