| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 326. Denker vs Kupchik |
| ½-½ | 55 | 1940 | United States Championship | D04 Queen's Pawn Game |
| 327. Kupchik vs S Bernstein |
| ½-½ | 49 | 1940 | United States Championship | B58 Sicilian |
| 328. Shainswit vs Kupchik |
| ½-½ | 44 | 1940 | United States Championship | A49 King's Indian, Fianchetto without c4 |
| 329. Kupchik vs G Littman |
| 1-0 | 20 | 1940 | United States Championship | A04 Reti Opening |
| 330. M L Hanauer vs Kupchik |
| ½-½ | 36 | 1940 | United States Championship | A16 English |
| 331. Kupchik vs D Polland |
| ½-½ | 53 | 1940 | United States Championship | D93 Grunfeld, with Bf4 & e3 |
| 332. Reshevsky vs Kupchik |
 | 1-0 | 81 | 1940 | United States Championship | E06 Catalan, Closed, 5.Nf3 |
| 333. Kupchik vs W Adams |
 | 1-0 | 42 | 1940 | United States Championship | D02 Queen's Pawn Game |
| 334. J L Foster vs Kupchik |
| 0-1 | 36 | 1942 | Metropolitan Chess League | A55 Old Indian, Main line |
| 335. Fine vs Kupchik |
| 1-0 | 54 | 1943 | USA speed ch (10-sec/move) | C05 French, Tarrasch |
| 336. Kashdan vs Kupchik |
| 1-0 | 29 | 1943 | US Lightning-ch | B84 Sicilian, Scheveningen |
| 337. Kupchik vs I A Horowitz |
| 1-0 | 51 | 1943 | US Speed ch | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 338. Kupchik vs I Rivise |
| ½-½ | 38 | 1945 | Metropolitan Chess League | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 339. Kupchik vs V Makogonov |
| 0-1 | 40 | 1945 | USSR - USA Radio Match | D37 Queen's Gambit Declined |
| 340. V Makogonov vs Kupchik |
| ½-½ | 73 | 1945 | USSR - USA Radio Match | D02 Queen's Pawn Game |
| 341. T B Eckenrode vs Kupchik |
| 0-1 | 29 | 1946 | 47th US Open | B22 Sicilian, Alapin |
| 342. Kupchik vs J Westbrock |
| 1-0 | 46 | 1946 | 47th US Open | D48 Queen's Gambit Declined Semi-Slav, Meran |
| 343. K Forster vs Kupchik |
| 0-1 | 31 | 1946 | 47th US Open | B92 Sicilian, Najdorf, Opocensky Variation |
| 344. Kupchik vs G Katz |
| ½-½ | 33 | 1946 | 47th US Open | E21 Nimzo-Indian, Three Knights |
| 345. W Shipman vs Kupchik |
| ½-½ | 21 | 1946 | 47th US Open | D95 Grunfeld |
| 346. Kupchik vs O Shapiro |
| 1-0 | 28 | 1946 | 47th US Open | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 347. H Steiner vs Kupchik |
| 1-0 | 49 | 1946 | 47th US Open | D52 Queen's Gambit Declined |
| 348. Kupchik vs A Bisguier |
| 1-0 | 48 | 1946 | 47th US Open | D39 Queen's Gambit Declined, Ragozin, Vienna Variation |
| 349. O Ulvestad vs Kupchik |
| 1-0 | 74 | 1946 | 47th US Open | D90 Grunfeld |
| 350. Kupchik vs D Byrne |
| 1-0 | 40 | 1946 | 47th US Open | C41 Philidor Defense |
Kibitzing
