| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 526. M Muender vs W Hartston |
| 0-1 | 43 | 1977 | Favorite Hammonia | D86 Grunfeld, Exchange |
| 527. W Hartston vs T Kordsachia |
| 1-0 | 62 | 1977 | Favorite Hammonia | E61 King's Indian |
| 528. H Heinicke vs W Hartston |
| 0-1 | 33 | 1977 | Favorite Hammonia | A14 English |
| 529. L Ogaard vs W Hartston |
| 0-1 | 40 | 1977 | Clare Benedict Cup | A14 English |
| 530. W Hartston vs M Wahlbom |
| 1-0 | 29 | 1977 | Clare Benedict Cup | A71 Benoni, Classical, 8.Bg5 |
| 531. W Wittmann vs W Hartston |
| ½-½ | 59 | 1977 | Clare Benedict Cup | B46 Sicilian, Taimanov Variation |
| 532. W Hartston vs J Eising |
| ½-½ | 29 | 1977 | Clare Benedict Cup | A88 Dutch, Leningrad, Main Variation with c6 |
| 533. U Rath vs W Hartston |
| ½-½ | 43 | 1977 | Clare Benedict Cup | A32 English, Symmetrical Variation |
| 534. J Bellon Lopez vs W Hartston |
| ½-½ | 35 | 1977 | Clare Benedict Cup | A43 Old Benoni |
| 535. W Hartston vs M Schauwecker |
| 1-0 | 42 | 1977 | Clare Benedict Cup | E30 Nimzo-Indian, Leningrad |
| 536. Jansa vs W Hartston |
| ½-½ | 21 | 1977 | European Team Championship | B82 Sicilian, Scheveningen |
| 537. W Hartston vs Petrosian |
 | ½-½ | 38 | 1977 | European Team Championship | C24 Bishop's Opening |
| 538. G Tringov vs W Hartston |
| ½-½ | 36 | 1977 | European Team Championship | B40 Sicilian |
| 539. Gligoric vs W Hartston |
| ½-½ | 23 | 1977 | European Team Championship | D86 Grunfeld, Exchange |
| 540. Gheorghiu vs W Hartston |
| 1-0 | 55 | 1977 | European Team Championship | A10 English |
| 541. W Hartston vs Ribli |
| 0-1 | 43 | 1977 | European Team Championship | A57 Benko Gambit |
| 542. W Hartston vs H Pfleger |
| 0-1 | 47 | 1977 | European Team Championship | D37 Queen's Gambit Declined |
| 543. Hodgson vs W Hartston |
| ½-½ | 51 | 1977 | 1st Lloyds Bank Masters Open | B21 Sicilian, 2.f4 and 2.d4 |
| 544. W Hartston vs C W Baker |
| 1-0 | 32 | 1977 | 1st Lloyds Bank Masters Open | A44 Old Benoni Defense |
| 545. J Quinn vs W Hartston |
| 0-1 | 37 | 1977 | 1st Lloyds Bank Masters Open | A56 Benoni Defense |
| 546. W Hartston vs M Basman |
| 1-0 | 38 | 1977 | 1st Lloyds Bank Masters Open | D11 Queen's Gambit Declined Slav |
| 547. N Birnboim vs W Hartston |
| ½-½ | 81 | 1977 | 1st Lloyds Bank Masters Open | D79 Neo-Grunfeld, 6.O-O, Main line |
| 548. W Hartston vs E Formanek |
| ½-½ | 12 | 1977 | 1st Lloyds Bank Masters Open | D18 Queen's Gambit Declined Slav, Dutch |
| 549. M J Franklin vs W Hartston |
| 0-1 | 51 | 1977 | 1st Lloyds Bank Masters Open | A48 King's Indian |
| 550. W Hartston vs Nunn |
| ½-½ | 18 | 1977 | 1st Lloyds Bank Masters Open | A71 Benoni, Classical, 8.Bg5 |
Kibitzing
