De Koster, Franzke K. (NED) - Svanholm, Borge W. (NOR) 0-1, Oslo Chess International, Elo-group (1), Oslo NOR, 2011.10.02
De Koster, Franzke K. (NED) - Torgersen, Eric (NOR) 0-1, Oslo Chess International, Elo-group (5), Oslo NOR, 2011.10.02
De Koster, Franzke K. (NED) - Gholami, Anita (NOR) 0-1, Oslo Chess International, Elo-group (9), Oslo NOR, 2011.10.02
De Koster, Franzke K. (NED) - Mihajlov, Svetoslav (NOR) 0-1, Sveins Minneturnering (1), Oslo NOR, 2010.06.18
De Koster, Franzke K. (NED) - Roholdt, Njaal (NOR) 0-1, Sveins Minneturnering (7), Oslo NOR, 2010.06.18
De Koster, Franzke K. (NED) - Setre, Roger (NOR) 0-1, Sveins Minneturnering (9), Oslo NOR, 2010.06.18
De Koster, Franzke K. (NED) - Johansen, Bjorn Berg (NOR) 0-1, Gausdal Classics, Elo (8), Gausdal NOR, 2008.04.15
De Koster, Franzke K. (NED) - Hansen, Erle Andrea Marki (NOR) 1-0, Gausdal Classics, Elo (6), Gausdal NOR, 2008.04.13
De Koster, Franzke K. (NED) - Lie, Terje (NOR) 1-0, Gausdal Classics, Elo (5), Gausdal NOR, 2008.04.12
De Koster, Franzke K. (NED) - De Luna, Alberto (ESP) 0-1, Gausdal Classics, Elo (2), Gausdal NOR, 2008.04.09
De Koster, Franzke K. (NED) - Jacobsen, Maria Pitz (NOR) 0-1, Gausdal Classics, Elo (9), Gausdal NOR, 2007.04.26
De Koster, Franzke K. (NED) - Hansson, Bo (SWE) 1-0, Gausdal Classics, Elo (7), Gausdal NOR, 2007.04.24
De Koster, Franzke K. (NED) - Johansen, Bjorn Berg (NOR) 0-1, Gausdal Classics, Elo (5), Gausdal NOR, 2007.04.22
De Koster, Franzke K. (NED) - Thingstad, Even (NOR) 0-1, Gausdal Classics, Elo (2), Gausdal NOR, 2007.04.19
De Koster, Franzke K. (NED) - Haug, Sverre A. (NOR) 0-1, Gausdal Classics, Elo (1), Gausdal NOR, 2007.04.18
Number of games: 15