| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 226. P Wolff vs B M Kogan |
| ½-½ | 60 | 1985 | United States Championship | C42 Petrov Defense |
| 227. B M Kogan vs Browne |
| 1-0 | 30 | 1985 | United States Championship | A45 Queen's Pawn Game |
| 228. B M Kogan vs de Firmian |
| ½-½ | 11 | 1985 | United States Championship | A04 Reti Opening |
| 229. V McCambridge vs B M Kogan |
| 0-1 | 39 | 1985 | United States Championship | D43 Queen's Gambit Declined Semi-Slav |
| 230. Kavalek vs B M Kogan |
| ½-½ | 12 | 1985 | United States Championship | D45 Queen's Gambit Declined Semi-Slav |
| 231. B M Kogan vs Dlugy |
| ½-½ | 13 | 1985 | United States Championship | A34 English, Symmetrical |
| 232. D Gurevich vs B M Kogan |
| ½-½ | 28 | 1985 | United States Championship | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 233. B M Kogan vs L Christiansen |
| ½-½ | 80 | 1985 | United States Championship | A40 Queen's Pawn Game |
| 234. K Shirazi vs B M Kogan |
 | 1-0 | 30 | 1985 | United States Championship | C43 Petrov, Modern Attack |
| 235. Kudrin vs B M Kogan |
| ½-½ | 61 | 1985 | United States Championship | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 236. B M Kogan vs Alburt |
| ½-½ | 28 | 1986 | United States Championship | A34 English, Symmetrical |
| 237. Benjamin vs B M Kogan |
| 1-0 | 38 | 1986 | United States Championship | D15 Queen's Gambit Declined Slav |
| 238. de Firmian vs B M Kogan |
| 0-1 | 32 | 1986 | United States Championship | C42 Petrov Defense |
| 239. B M Kogan vs J Fedorowicz |
| 0-1 | 58 | 1986 | United States Championship | A46 Queen's Pawn Game |
| 240. D Gurevich vs B M Kogan |
| 0-1 | 60 | 1986 | United States Championship | A15 English |
| 241. Kudrin vs B M Kogan |
| 1-0 | 60 | 1986 | United States Championship | C07 French, Tarrasch |
| 242. B M Kogan vs L Christiansen |
| 1-0 | 37 | 1986 | United States Championship | A04 Reti Opening |
| 243. B M Kogan vs K Shirazi |
| 0-1 | 46 | 1986 | United States Championship | A53 Old Indian |
| 244. C Hertan vs B M Kogan |
| 1-0 | 35 | 1986 | Bermuda | C03 French, Tarrasch |
| 245. M Rohde vs B M Kogan |
| 1-0 | 32 | 1986 | United States Championship | C75 Ruy Lopez, Modern Steinitz Defense |
| 246. B M Kogan vs M Wilder |
| 0-1 | 26 | 1986 | United States Championship | A45 Queen's Pawn Game |
| 247. Browne vs B M Kogan |
| 0-1 | 38 | 1986 | United States Championship | D15 Queen's Gambit Declined Slav |
| 248. A Lein vs B M Kogan |
| ½-½ | 11 | 1986 | United States Championship | D67 Queen's Gambit Declined, Orthodox Defense, Bd3 line |
| 249. B M Kogan vs R Mateo |
| 1-0 | 43 | 1986 | New York Open | E00 Queen's Pawn Game |
| 250. C Ramayrat vs B M Kogan |
| ½-½ | 39 | 1986 | New York Open | D45 Queen's Gambit Declined Semi-Slav |
Kibitzing
