Percy B Cook
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| BCF-ch op | ??/??/1969 | 0 | United Kingdom |
| Oxford Major op | ??/??/1967 | 0 | United Kingdom |
| BCF-ch Major open | 08/??/1966 | 0 | United Kingdom |
| BCF-ch Major Open | 08/??/1963 | 0 | United Kingdom |
Most Played Openings as White
| ECO | Opening | Games |
| C97 | Ruy Lopez, closed, Chigorin defence | 3 games |
| B74 | Sicilian, dragon, classical, 9.Nb3 | 2 games |
| B58 | Sicilian, classical | 2 games |
| B45 | Sicilian, Taimanov variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A07 | Reti, King's Indian attack (Barcza system) | 2 games |
| D76 | Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6 | 2 games |
| A05 | Reti opening | 1 games |
| A16 | English opening | 1 games |


United Kingdom