Ronald Johannes
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Islington U18 | ??/??/1970 | 0 |  United Kingdom |
| BCF-ch U18 | ??/??/1967 | 0 | United Kingdom |
| BCF-ch U16 | 08/??/1966 | 0 | United Kingdom |
Ronald Johannes Repertoire with White pieces (most played)
| ECO | Opening | Games |
| C06 | French, Tarrasch, closed variation, main line | 1 games |
| E93 | King's Indian, Petrosian system, main line | 1 games |
| A22 | English opening | 1 games |
| C54 | Giuoco Piano | 1 games |
Ronald Johannes Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| B43 | Sicilian, Kan, 5.Nc3 | 2 games |
| E23 | Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc6 | 1 games |
| E57 | Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd | 1 games |
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