6. Piet Roozenburg - Reinier Cornelis Keller. WK-match 1951.
Piet Roozenburg - Henk Laros. World Championship in International Draughts- 1948.
Piet Roozenburg 25 victories ( Wch 1948-1954 )
Pierre Perot - Piet Roozenburg. World Championship in International Draughts- 1948.
Piet Roozenburg - Dammis van der Staaij. World Championship in International Draughts- 1948.
6. Wim Huisman (NLD)- Piet Roozenburg (NLD). WK-match 1954.
15. Reinier Cornelis Keller - Piet Roozenburg. WK-match 1951.
Piet Roozenburg (NLD) - Reinier Cornelis Keller (NLD). Draughts World Championship. 1952.
16. Piet Roozenburg - Reinier Cornelis Keller. WK-match 1951.
17. Reinier Cornelis Keller - Piet Roozenburg. WK-match 1951.
8. Piet Roozenburg - Reinier Cornelis Keller. WK-match 1951.
12. Piet Roozenburg - Reinier Cornelis Keller. WK-match 1951.
7. Reinier Cornelis Keller - Piet Roozenburg. WK-match 1951.
1. Reinier Cornelis Keller - Piet Roozenburg. WK-match 1951.
10. Piet Roozenburg - Reinier Cornelis Keller. WK-match 1951.
18. Piet Roozenburg - Reinier Cornelis Keller. WK-match 1951.
Opening Theories and Systems | Roozenburg Attack System
11. Reinier Cornelis Keller - Piet Roozenburg. WK-match 1951.
9. Reinier Cornelis Keller - Piet Roozenburg. WK-match 1951.
3. Reinier Cornelis Keller - Piet Roozenburg. WK-match 1951.
