Pritchett represented Scotland three times in Student Olympiads, from 1968-1970. Here are his detailed results, from olimpbase.org:
- Ybbs 1968, board 1, 3/10 (+1 =4 -5);
- Dresden 1969, board 2, 4.5/8 (+2 =5 -1);
- Haifa 1970, board 2, 2/9 (+1 =2 -6).
Pritchett represented Scotland nine times in chess Olympiads, from 1966-1990. Here are his detailed results, from olimpase.org. His totals in 117 games are (+43 =46 -28), for 56.4 per cent.
- Havana 1966, board 4, 6.5/16 (+4 =5 -7);
- Siegen 1970, board 2, 8.5/14 (+6 =5 -3);
- Skopje 1972, board 2, 12.5/18 (+9 =7 -2);
- Nice 1974, board 1, 9/15 (+7 =4 -4);
- Haifa 1976, board 1, 4.5/11 (+2 =5 -4);
- Buenos Aires 1978, board 1, 8/13 (+5 =6 -2);
- La Valletta 1980, board 1, 5/9 (+3 =4 -2);
- Dubai 1986, board 3, 5.5/11 (+3 =5 -3);
- Novi Sad 1990, board 3, 6.5/11 (+4 =5 -1).