Johan Teunis Barendregt vs Mikhail Botvinnik
Amsterdam IBM Amsterdam NED round 7 1966.07.12
Caro-Kann Defense 1-0

Johan-Sebastian Christiansen vs Jergus Pechac
23rd European Teams Terme Catez SLO round 6.11 2021.11.18
Scandinavian Defense 1-0

Johan-Sebastian Christiansen vs Ramesh Babu Vaishali
Qatar Masters Doha QAT round 7.60 2015.12.27
English Opening: Anglo-Indian Defense 0-1

Johann Hjartarson vs Miguel Illescas Cordoba
Linares Linares ESP round 2 1988.02.24
Queen’s Gambit Declined: Tarrasch Defense, Stoltz Variation 1/2-1/2

Johann Hjartarson vs Nigel Short
3rd Euwe Memorial Amsterdam NED round 6 1989.03.23
English Opening: King’s English Variation 0-1

Johannes Hendrik Otto van den Bosch vs Mir Sultan Khan
Cambridge Premier Cambridge ENG round 7 1932.04.02
Grünfeld Defense: Botvinnik Variation 0-1

Johannes Zukertort vs Wilfried Paulsen
Berlin Berlin GER round 1 1881.08.29
Sicilian Defense: Kan Variation, Knight Variation 0-1

John A Curdo vs Danny Kopec
Salem OP Salem, NH USA 1969.??.??
Sicilian Defense: Chekhover Variation 1-0

John Jackson vs Charles Fenton Bolland
Scarborough Scarborough ENG round 1 1929.05.??
French Defense 1/2-1/2

John K Shaw vs Alistair Maxwell
111th Scottish Championship Hamilton SCO round 1 2004.07.10
French Defense: Diemer-Duhm Gambit 1-0