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| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. B Koch vs Gligoric |
 | 0-1 | 59 | 1952 | Helsinki Olympiad qual-2 | B65 Sicilian, Richter-Rauzer Attack, 7...Be7 Defense, 9...Nxd4 |
| 2. B Koch vs K U Mueller |
| 1-0 | 21 | 1952 | GDR Championship (Play-off) | B65 Sicilian, Richter-Rauzer Attack, 7...Be7 Defense, 9...Nxd4 |
| 3. B Koch vs Dr H Mueller |
| 1-0 | 13 | 1953 | 3rd German Correspondence ch -56 | B65 Sicilian, Richter-Rauzer Attack, 7...Be7 Defense, 9...Nxd4 |
| 4. B Koch vs E Budrich |
| ½-½ | 48 | 1953 | East German Championship | B65 Sicilian, Richter-Rauzer Attack, 7...Be7 Defense, 9...Nxd4 |
| 5. B Koch vs M Napolitano |
| 1-0 | 24 | 1954 | Dyckhoff mem-A corr5456 | B65 Sicilian, Richter-Rauzer Attack, 7...Be7 Defense, 9...Nxd4 |
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Kibitzing
