| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 476. W N Watson vs J Gast |
| 1-0 | 27 | 1990 | Bern Open | B62 Sicilian, Richter-Rauzer |
| 477. J Klinger vs W N Watson |
| 0-1 | 46 | 1990 | Bern Open | A48 King's Indian |
| 478. W N Watson vs C Pieper-Emden |
| ½-½ | 20 | 1990 | BL2-W 8990 | C80 Ruy Lopez, Open |
| 479. Larsen vs W N Watson |
| 1-0 | 35 | 1990 | London WFW | B20 Sicilian |
| 480. W N Watson vs G Flear |
| ½-½ | 36 | 1990 | London WFW | C80 Ruy Lopez, Open |
| 481. P Motwani vs W N Watson |
| ½-½ | 27 | 1990 | London WFW | A49 King's Indian, Fianchetto without c4 |
| 482. Chandler vs W N Watson |
| ½-½ | 19 | 1990 | London WFW | B76 Sicilian, Dragon, Yugoslav Attack |
| 483. W N Watson vs D King |
| ½-½ | 30 | 1990 | London WFW | B97 Sicilian, Najdorf |
| 484. J Tisdall vs W N Watson |
| 0-1 | 38 | 1990 | London WFW | E97 King's Indian |
| 485. W N Watson vs Adams |
| ½-½ | 19 | 1990 | London WFW | B01 Scandinavian |
| 486. P Wolff vs W N Watson |
| 1-0 | 50 | 1990 | London WFW | B17 Caro-Kann, Steinitz Variation |
| 487. W N Watson vs Hodgson |
| ½-½ | 35 | 1990 | London WFW | C10 French |
| 488. V Frias Pablaza vs W N Watson |
| 1-0 | 52 | 1990 | London WFW | A15 English |
| 489. W N Watson vs A Kosten |
| 1-0 | 45 | 1990 | London WFW | C18 French, Winawer |
| 490. J Levitt vs W N Watson |
| 1-0 | 41 | 1990 | London WFW | E81 King's Indian, Samisch |
| 491. W N Watson vs M Hebden |
| 1-0 | 54 | 1990 | London WFW | C91 Ruy Lopez, Closed |
| 492. E Magerramov vs W N Watson |
| 0-1 | 41 | 1990 | Luxembourg Open | E92 King's Indian |
| 493. W N Watson vs D Rajkovic |
| 1-0 | 42 | 1990 | Luxembourg Open | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 494. W N Watson vs Jansa |
 | ½-½ | 47 | 1990 | Luxembourg Open | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 495. Plaskett vs W N Watson |
| 0-1 | 64 | 1990 | Luxembourg Open | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 496. D Hassabis vs W N Watson |
| 0-1 | 32 | 1990 | British Championship | E73 King's Indian |
| 497. W N Watson vs I Findlay |
| 1-0 | 47 | 1990 | British Championship | B70 Sicilian, Dragon Variation |
| 498. P J Morris vs W N Watson |
| 1-0 | 62 | 1990 | British Championship | B76 Sicilian, Dragon, Yugoslav Attack |
| 499. W N Watson vs J Emms |
| ½-½ | 29 | 1990 | British Championship | C28 Vienna Game |
| 500. A Collinson vs W N Watson |
| 0-1 | 50 | 1990 | British Championship | B08 Pirc, Classical |
Kibitzing
