Gerard Kroone vs Petrus Franciscus van Hoorn
NED-ch Utrecht NED round 5 1926.07.23
Colle System: Rhamphorhynchus Variation 1/2-1/2

Petrus Franciscus van Hoorn vs Sonja Graf-Stevenson
VAS Easter Amsterdam NED 1934.??.??
Queen’s Gambit Declined: Tarrasch Defense, Stoltz Variation 1/2-1/2

Petrus Franciscus van Hoorn vs Edgar Colle
Match Amsterdam NED round 1 1928.12.??
Alekhine Defense 0-1

Hendrik Willem Felderhof vs Petrus Franciscus van Hoorn
Scheveningen Scheveningen NED round 1 1933.07.26
French Defense: Burn Variation 0-1

Petrus Franciscus van Hoorn vs Max Euwe
NED-ch NED round 2 1933.07.16
Caro-Kann Defense: Panov Attack 0-1

Petrus Franciscus van Hoorn vs Geza Maroczy
Scheveningen Scheveningen NED round 4 1933.07.29
French Defense: Alekhine-Chatard Attack 0-1

E A J M Mulder vs Petrus Franciscus van Hoorn
Scheveningen Scheveningen NED round 2 1933.07.27
Nimzo-Indian Defense: Normal Line 0-1

Bernard Beffie vs Petrus Franciscus van Hoorn
VAS Winter Amsterdam NED 1923.??.??
English Opening: Anglo-Indian Defense 1-0