Dutch vs John N Sugden
Mushrooms-Coulsdon & Purley London ENG 1964.??.??
Bird Opening: Dutch Variation, Batavo Gambit 0-1

Raymond Keene vs John N Sugden
Dulwich College 1960.??.??
Sicilian Defense: Najdorf Variation 1-0

Simon J Roe vs John N Sugden
British Championship North Shields ENG round 1.18 2012.07.23
English Opening: Symmetrical Variation, Botvinnik System Reversed 1-0

Raymond Keene vs John N Sugden
Match game 5 1961.??.??
Réti Opening 1-0

John N Sugden vs Gudmundur Kjartansson
Hastings 2009/10 Hastings ENG round 1 2009.12.28
Ruy Lopez: Closed, Delayed Exchange 1/2-1/2

John N Sugden vs Raymond Keene
Match game 6, Beckenham 1961.??.??
Nimzo-Indian Defense: Normal Line 0-1