Semen Isaakovich Dvoirys vs Alexei Lugovoi
Russian Championship Elista RUS round 1.12 1996.10.15
Sicilian Defense: Richter-Rauzer Variation, Classical Variation 1/2-1/2

Semen Isaakovich Dvoirys vs Vladimir P Malaniuk
URS-ch56 Odessa URS round 15 1989.10.??
Ruy Lopez 1-0

Semen Isaakovich Dvoirys vs Elisabeth Paehtz
Cappelle la Grande Cappelle la Grande FRA round 1 2001.02.24
Sicilian Defense: Najdorf Variation 1-0

Viktor Kupreichik vs Semen Isaakovich Dvoirys
Leeuwarden op Leeuwarden NED round 6 1993.08.25
Sicilian Defense: Najdorf Variation 1-0

Semen Isaakovich Dvoirys vs Artiom Akhmetov
Aeroflot Open Moscow RUS round 6 2002.02.08
Ruy Lopez: Berlin Defense 1-0