Helgi Olafsson vs Pavel Smirnov
Aeroflot Open Moscow RUS round 1 2008.02.14
Nimzo-Indian Defense: Classical Variation, Noa Variation 1-0

Alexey Shirov vs Helgi Olafsson
Klooster Tournament 4th Ter Apel NED 1991.??.??
Nimzo-Indian Defense: Sämisch Variation 1-0

Garry Kasparov vs Helgi Olafsson
Reykjavik Blitz Reykjavik round 1 2004.03.17
Queen’s Gambit Declined: Ragozin Defense, Vienna Variation 1-0

Helgi Olafsson vs Gawain Jones
Pro Chess League chess.com INT round 2 2018.01.25
Grünfeld Defense: Counterthrust Variation 0-1

Berge Ostenstad vs Helgi Olafsson
Espoo Zonal Espoo FIN round 12 1989.07.??
Grünfeld Defense: Exchange Variation 1/2-1/2

Throstur Arnason vs Helgi Olafsson
TCh-ISL Div 1 -17 Reykjavik ISL round 2.1 2016.09.30
Colle System: Rhamphorhynchus Variation 0-1

Throstur Arnason vs Helgi Olafsson
TCh-ISL Div 1 -18 Reykjavik ISL round 2.4 2017.10.20
Grünfeld Defense: Counterthrust Variation 0-1

Helgi Olafsson vs Leif Erlend Johannessen
Jonsson Mem Open Reykjavik ISL round 8 2001.10.31
Australian Defense 1-0