| Date | Chess tournament name | Status | ||
|---|---|---|---|---|
| No results | No results | No results | No results | No results | 
| Date | Players & Opening | Result | ECO | View | 
|---|---|---|---|---|
| No results | No results | No results | No results | No results | 
| Date | Players & Opening | Result | ECO | View | 
|---|---|---|---|---|
| 1959.01.01 | Tan, Hoang vs Sassen, P. Beverwijk Nimzo-Indian Three Knights  | 
                                                                                                                                                1-0 | E21 | |
| 1960.01.01 | Sassen, P. vs Meyer, H. corr EU/M Nimzo-Indian Noa  | 
                                                                                                                                                0-1 | E37 | |
| 1973.01.01 | Sassen, P. vs Rijken, Th corr ch-NLD Nimzo-Indian Berlin (Pirc)  | 
                                                                                                                                                0-1 | E39 | |
| 1974.01.01 | Sassen, P. vs Mooij, Walter cr. King's Indian Four Pawns - Dynamic  | 
                                                                                                                                                0-1 | E76 | |
| 1959.01.01 | Sassen vs Diemer, Emil Beverwijk Irregular Queen's Pawn - Charlick (Soller)  | 
                                                                                                                                                1-0 | A40 | |
| 1960.01.01 | Mayer, K. vs Sassen, P. corr EU/M Indian Knight  | 
                                                                                                                                                0-1 | A46 | |
| 1965.01.01 | Kruger, D. vs Sassen, P. cr. Sicilian Yugoslav Dragon  | 
                                                                                                                                                1/2-1/2 | B77 | |
| 1975.01.01 | Holscher, J. vs Sassen, P. cr. French Advance - Paulsen  | 
                                                                                                                                                0-1 | C02 | |
| 1967.01.01 | Guensav, O. vs Sassen, P. corr EU/M Alekhine - Saemisch  | 
                                                                                                                                                1-0 | B02 | |
| 1973.01.01 | Elzerman, J. vs Sassen, P. corr NBC Nimzo-Indian Milner-Barry - Old Zurich  | 
                                                                                                                                                1-0 | E33 | |
| 1958.01.01 | Eggink, L. vs Sassen, Th Netherlands King's Gambit Accepted (Cunningham) - Euwe  | 
                                                                                                                                                1-0 | C35 |