Petko Kostov
| White | Black | |
|---|---|---|
| Emil Karastoichev | Petko Kostov | View |
| Petko Kostov | Vladilen Popov | View |
| Petko Kostov | Atanas S Kolarov | View |
| Petko Kostov | Georgi Martinov | View |
| Luben Popov | Petko Kostov | View |
| Zdravko Kadrev | Petko Kostov | View |
| Petko Kostov | Nikolay N Minev | View |
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