Variations
1: No direct questions of the type Are you . . . ?' may be asked. Students have to find out by asking, e.g. 'Have you got more than one first name?' 'Does your surname end with an "e"?"Are your initials F. K.?'
2: Step 3 is expanded. When everyone has found his partner, he asks him a few questions about his family, background, hobbies, etc. When he introduces him to the group, these are mentioned as well.