Pedro Aguilar vs Arthur Howard Williams
Haifa Olympiad (Men) Haifa ISR round 1 1976.10.25
Nimzo-Indian Defense: Normal Variation, Schlechter Defense 0-1

Craig William Pritchett vs Arthur Howard Williams
BCF-ch Bristol ENG round 2 1968.08.06
Sicilian Defense: Najdorf Variation, Opocensky Variation 1/2-1/2

Arthur Howard Williams vs Eugenio Torre
Wch U20 fin-B Stockholm SWE round 9 1969.08.??
Alekhine Defense 0-1

Arthur Howard Williams vs Anatoly Karpov
Olympiad Qualifying Group 1 Nice FRA round 8 1974.06.14
Nimzo-Indian Defense: Leningrad Variation, Benoni Defense 0-1