The Winner is

Saikyo Igo 2 by 10-5

Challenger

 Champion
Silver Star Igo - Silver Star Japan Saikyo Igo 2 - Unbalance

Test Environment

May 1, 1999 Silver Star Igo v.s.Saikyo Igo   2（The Strongest Game of Go 2)
　 Winner Loser result comment
Game 1 black - Silver Star Igo white - Saikyo Igo 2 Black won by 0.5 points 　
Game 2 black - Saikyo Igo 2 white - Silver Star Igo black won by 20.5 points 　
Game 3 black - Silver Star Igo white - Saikyo Igo 2 Black won by 3.5 points 　
Game 4 white - Silver Star Igo black - Saikyo Igo 2 white won by 16.5 points Saikyo's mistake in scoring (17.5)
Game 5 white - Saikyo Igo 2 black - Silver Star Igo white won by 2.5 points 　
Game 6 white - Silver Star Igo black - Saikyo Igo 2 white won by 4.5 points 　
Game 7 white - Saikyo Igo 2 black - Silver Star Igo white won by 11.5 points 　
Game 8 black - Saikyo Igo 2 white - Silver Star Igo Black won by 37.5 points 　
Game 9 white - Saikyo Igo 2 black - Silver Star Igo white won by 0.5 points 　
Game 10 black - Saikyo Igo 2 white - Silver Star Igo Black won by 22.5 points Saikyo's mistakein scoring (21.5 )
Game 11 black - Silver Star Igo white - Saikyo Igo 2 Black won by 18.5 points 　
Game 12 black - Saikyo Igo 2 white - Silver Star Igo Black won by 16.5 points Saikyo's mistake in scoring (15.5 )
Game 13 white - Saikyo Igo 2 black - Silver Star Igo white won by 8.5 points 　
Game 14 black - Saikyo Igo 2 white - Silver Star Igo Black won by 14.5 points Silver Star's  mistake in death and life at the upper-left corner
Game 15 white - Saikyo Igo 2 black - Silver Star Igo white won by 10.5 points Saikyo's mistake in scoring (9.5 )