music: 80's Chart Toppers: Name The Artist: Along Comes A Woman?

Questions

Which chess computer made history by beating a grand master by a score of 3.5 to 2.5 in a series of games in 1997?

What was the name of the town in which Gilbert and Sullivans The Mikado set?

In the song which begins A frog he would a wooing go, who says Heigh Ho?

Which comedians catchphrase was Hello Playmates?

On clothing labels what is the meaning of a symbol consisting of a circle within a square crossed out?