Jan Smeets vs Ivan Sokolov
Staunton Memorial London ENG round 3 2008.08.09
Ruy Lopez: Closed 1-0

Jan Smejkal vs Raul Sanguineti
Biel Interzonal Biel SUI round 4 1976.07.15
English Opening: Agincourt Defense, Keres Defense 1/2-1/2

Jan Timman vs Jeroen Piket
Hoogovens Wijk aan Zee NED round 2.2 1995.01.17
Ruy Lopez: Schliemann Defense 1-0

Jan-Krzysztof Duda vs Magnus Carlsen
World Blitz Championship Moscow RUS round 17.1 2019.12.30
Sicilian Defense: Four Knights Variation, Cobra Variation 1/2-1/2

Jan-Krzysztof Duda vs Samuel Sevian
FIDE World Cup 2021 Krasnaya Polyana (Sochi) RUS round 3.2 2021.07.19
Nimzo-Indian Defense: Classical Variation, Noa Variation 1-0

Jane Richmond vs Enrique Fernandez Aguado
EUR-chT (Men) 9th Haifa ISR round 6 1989.11.??
Queen’s Pawn Game: Veresov Attack, Boyce Defense 0-1

Jani Ahvenjarvi vs Vaidas Sakalauskas
22nd HOF Open Jyvaskyla FIN round 1 2012.07.09
French Defense: Tarrasch Variation, Chistyakov Defense 1/2-1/2

Janis Klavins vs Janis Yanovich Klovans
Latvian championship Riga URS 1954.??.??
Bishop’s Opening: Boden-Kieseritzky Gambit 0-1

Janis Slezis vs Edgars Stukens
Zurnala Aizargs Group 1 Correspondence 1936.??.??
Amar Gambit 1-0

Janos Balogh vs Axel Cruusberg
Prague Olympiad Prague CSR round 9 1931.07.17
Alekhine Defense: Modern Variation 1-0