D. Isaacson
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Tel Aviv ol (Men) fin-D | 11/02/1964 | 0 |  Israel |
| Tel Aviv ol (Men) prel | 11/02/1964 | 0 | Israel |
Most Played Openings as White
| ECO | Opening | Games |
| B35 | Sicilian, accelerated fianchetto, modern variation with Bc4 | 1 games |
| B86 | Sicilian, Sozin attack | 1 games |
| B00 | King's pawn opening | 1 games |
| C29 | Vienna gambit | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| E30 | Nimzo-Indian, Leningrad variation | 1 games |
| E21 | Nimzo-Indian, three knights variation | 1 games |
| E59 | Nimzo-Indian, 4.e3, main line | 1 games |
| D34 | Queen's Gambit Declined, Tarrasch, Prague variation, 7...Be7 | 1 games |
