Ernst Gruenfeld
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Hoogovens | ??/??/1961 | 0 | Netherlands |
| Mitropa Cup | 12/??/1953 | 0 | Austria |
| Vienna 5253 | ??/??/1952 | 0 | Austria |
| Belgrade | ??/??/1952 | 0 |
Most Played Openings as White
| ECO | Opening | Games |
| D64 | Queen's Gambit Declined, Orthodox defence, Rubinstein attack (with Rc1) | 20 games |
| E16 | Queen's Indian, Capablanca variation | 16 games |
| D52 | Queen's Gambit Declined | 14 games |
| D46 | Queen's Gambit Declined semi-Slav, 6.Bd3 | 13 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B02 | Alekhine's defence | 19 games |
| A47 | Queen's Indian defence | 12 games |
| D27 | Queen's Gambit Accepted, classical, 6...a6 | 11 games |
| C90 | Ruy Lopez, closed (with ...d6) | 10 games |


Netherlands
Austria