Tischbierek, Raj (GER) - Thorsteins, Karl (ISL) 1/2-1/2, Arnold Cup, Gausdal NOR, 1990
Ostenstad, Berge (NOR) - Thorsteins, Karl (ISL) 0-1, Arnold Cup, Gausdal NOR, 1990
Jansa, Vlastimil (CZE) - Thorsteins, Karl (ISL) 0-1, Arnold Cup, Gausdal NOR, 1990
Degerman, Lars (SWE) - Thorsteins, Karl (ISL) 1/2-1/2, Arnold Cup, Gausdal NOR, 1990
Hansen, Lars Bo (DEN) - Thorsteins, Karl (ISL) 1/2-1/2, Arnold Cup, Gausdal NOR, 1990
Brunner, Lucas (SUI) - Thorsteins, Karl (ISL) 1-0, Internasjonal turnering, Oslo NOR, 1983
Ostenstad, Berge (NOR) - Thorsteins, Karl (ISL) 1-0, Internasjonal turnering, Oslo NOR, 1983
Winge, Stefan (SWE) - Thorsteins, Karl (ISL) 1/2-1/2, Internasjonal turnering, Oslo NOR, 1983
Nielsen (NOR) - Thorsteins, Karl (ISL) 0-1, Internasjonal turnering, Oslo NOR, 1983
Morris, Walter D. (USA) - Thorsteins, Karl (ISL) 1/2-1/2, Internasjonal turnering (2), Gausdal NOR, 1982.08
Gulbrandsen, Arne V. (NOR) - Thorsteins, Karl (ISL) 0-1, Internasjonal turnering (5), Gausdal NOR, 1982.08
De Firmian, Nick E. (USA) - Thorsteins, Karl (ISL) 1-0, Internasjonal turnering (7), Gausdal NOR, 1982.08
Diesen, Bruce (NOR) - Thorsteins, Karl (ISL) 1/2-1/2, Young Masters (2), Gausdal NOR, 1982.08
Dlugy, Maxim (USA) - Thorsteins, Karl (ISL) 0-1, Young Masters (4), Gausdal NOR, 1982.08
Kudrin, Sergey (USA) - Thorsteins, Karl (ISL) 1-0, Young Masters (6), Gausdal NOR, 1982.08
Number of games: 15