| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 501. J Flesch vs P Lukacs |
| ½-½ | 14 | 1975 | Hungarian Championship | A00 Uncommon Opening |
| 502. I Bilek vs J Flesch |
| ½-½ | 7 | 1975 | Hungarian Championship | D26 Queen's Gambit Accepted |
| 503. J Flesch vs Lengyel |
| ½-½ | 19 | 1975 | Hungarian Championship | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
| 504. J Flesch vs L Barczay |
| 1-0 | 60 | 1975 | Hungarian Championship | A07 King's Indian Attack |
| 505. Adorjan vs J Flesch |
  | 1-0 | 31 | 1975 | Hungarian Championship | B17 Caro-Kann, Steinitz Variation |
| 506. J Flesch vs Sax |
| ½-½ | 20 | 1975 | Hungarian Championship | A36 English |
| 507. Csom vs J Flesch |
| ½-½ | 34 | 1975 | Hungarian Championship | A15 English |
| 508. J Flesch vs Ribli |
| ½-½ | 54 | 1975 | Hungarian Championship | A37 English, Symmetrical |
| 509. P Petran vs J Flesch |
| ½-½ | 18 | 1975 | Hungarian Championship | E15 Queen's Indian |
| 510. J Flesch vs G Iskov |
| 1-0 | 26 | 1976 | Oslo Chess International | D78 Neo-Grunfeld, 6.O-O c6 |
| 511. A Ornstein vs J Flesch |
| ½-½ | 41 | 1976 | Oslo Chess International | B13 Caro-Kann, Exchange |
| 512. T Harestad vs J Flesch |
| 0-1 | 45 | 1976 | Oslo Chess International | A33 English, Symmetrical |
| 513. J Flesch vs O C Moen |
| 1-0 | 37 | 1976 | Oslo Chess International | E67 King's Indian, Fianchetto |
| 514. L Spassov vs J Flesch |
| ½-½ | 12 | 1976 | Oslo Chess International | A09 Reti Opening |
| 515. T Heiberg vs J Flesch |
| 0-1 | 26 | 1976 | Oslo Chess International | A49 King's Indian, Fianchetto without c4 |
| 516. J Flesch vs T Kristiansen |
| ½-½ | 18 | 1976 | Oslo Chess International | A49 King's Indian, Fianchetto without c4 |
| 517. J Flesch vs B Tiller |
| 1-0 | 43 | 1976 | Oslo Chess International | E63 King's Indian, Fianchetto, Panno Variation |
| 518. J Flesch vs E Gereben |
| ½-½ | 27 | 1976 | Oslo Chess International | E68 King's Indian, Fianchetto, Classical Variation, 8.e4 |
| 519. J Flesch vs G Iskov |
| ½-½ | 19 | 1976 | Dortmund | A05 Reti Opening |
| 520. J Flesch vs R Balinas |
| 1-0 | 31 | 1976 | Dortmund | A12 English with b3 |
| 521. W Nicolai vs J Flesch |
| 0-1 | 61 | 1976 | Dortmund | A30 English, Symmetrical |
| 522. J Flesch vs A Sydor |
| ½-½ | 11 | 1976 | Dortmund | C07 French, Tarrasch |
| 523. Miles vs J Flesch |
| ½-½ | 34 | 1976 | Dortmund | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 524. J Flesch vs M Krause |
| 1-0 | 29 | 1976 | Dortmund | A49 King's Indian, Fianchetto without c4 |
| 525. D Tomic vs J Flesch |
| 0-1 | 56 | 1976 | Dortmund | B49 Sicilian, Taimanov Variation |
Kibitzing
