Jonathan Speelman vs Philipp Ammann
Schilde op U18 9th Schilde round 6 1973.07.12
Sicilian Defense: Taimanov Variation 1-0

Joan Baart vs Philipp Ammann
W/EU-ch U20 7677 Groningen NED round 1 1976.12.21
English Opening: Agincourt Defense, Keres Defense 1/2-1/2