Alexey Shirov vs Johann Hjartarson
World Team-ch 3rd Lucerne SUI round 5 1993.10.28
Sicilian Defense: Taimanov Variation, Bastrikov Variation 1-0

Inna Agrest vs Johann Hjartarson
Pro Chess League chess.com INT round 5 2018.02.07
Ruy Lopez: Closed, Chigorin Defense 0-1

Johann Hjartarson vs Nigel Short
Reykjavik Rapid Reykjavik ISL round 1 2004.03.17
Queen’s Gambit Declined: Anti-Tartakower Variation 1-0

Olexandr Bortnyk vs Johann Hjartarson
Pro Chess League chess.com INT round 7 2018.02.24
Modern Defense 0-1

Mikhail Kobalia vs Johann Hjartarson
Gibraltar Masters La Caleta GIB round 6.6 2020.01.26
Modern Defense 1-0

Peter T Roberson vs Johann Hjartarson
Pro Chess League chess.com INT round 2 2018.01.25
Alekhine Defense: Modern Variation, Alekhine Variation 1/2-1/2

Johann Hjartarson vs Luke McShane
Greenland Open Qaqortoq GRL round 6 2003.06.29
English Opening: Anglo-Indian Defense, Grünfeld Formation 0-1