| ECO | Opening | Games |
| B06 | Robatsch (modern) defence | 1 games |
| C16 | French, Winawer, advance variation | 1 games |
| B81 | Sicilian, Scheveningen, Keres attack | 1 games |
| B73 | Sicilian, dragon, classical, 8.O-O | 1 games |
| ECO | Opening | Games |
| B76 | Sicilian, dragon, Yugoslav attack, 7...O-O | 2 games |
| D55 | Queen's Gambit Declined, 6.Nf3 | 1 games |
| A16 | English opening | 1 games |
| B30 | Sicilian defence | 1 games |
| White | ELO W | Black | ELO B | Result | Moves | ECO | Date | Tournamet | View |
| Ostenstad, B | 2310 | Billah, | 1-0 | D90 | 1984 | Wch U20 |  |
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| Ramsingh, Y | Billah, | 0-1 | B30 | 1984 | Wch U20 |  |
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| Klinger, J | 2310 | Billah, | 1-0 | B76 | 1984 | Wch U20 | |
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| Gunawan, R | Billah, | ½-½ | A16 | 1984 | Wch U20 | |
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| Mera, O | Billah, | ½-½ | D55 | 1984 | Wch U20 | |
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| Darcyl, T | 2285 | Billah, | 1-0 | A07 | 1984 | Wch U20 | |
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| Miljanic, B | Billah, | ½-½ | B76 | 1984 | Wch U20 | |
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| Billah, | Kolev, A | 1-0 | B73 | 1984 | Wch U20 | |
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| Billah, | Lacroix, B | 1-0 | B33 | 1984 | Wch U20 | |
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| Billah, | Pulkkinen, K | 1-0 | B81 | 1984 | Wch U20 | |
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| Billah, | Hickl, J | 0-1 | B06 | 1984 | Wch U20 | |
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| Billah, | Kekki, P | 1-0 | C16 | 1984 | Wch U20 | |
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| Billah, | Gil Capape, J | 0-1 | B12 | 1984 | Wch U20 | |