| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 601. W Hartston vs B Rytov |
| 1-0 | 40 | 1979 | Keres Memorial | E60 King's Indian Defense |
| 602. W Hartston vs Chandler |
| ½-½ | 24 | 1979 | Alicante 6th | D85 Grunfeld |
| 603. W Hartston vs G Sigurjonsson |
| ½-½ | 20 | 1979 | Esbjerg | D12 Queen's Gambit Declined Slav |
| 604. L Vadasz vs W Hartston |
| 1-0 | 35 | 1979 | Esbjerg | A05 Reti Opening |
| 605. W Hartston vs E Mortensen |
 | ½-½ | 68 | 1979 | Esbjerg | D38 Queen's Gambit Declined, Ragozin Variation |
| 606. J Sloth vs W Hartston |
| ½-½ | 13 | 1979 | Esbjerg | A30 English, Symmetrical |
| 607. W Hartston vs J Ost-Hansen |
| 1-0 | 47 | 1979 | Esbjerg | E60 King's Indian Defense |
| 608. P B Knudsen vs W Hartston |
| 0-1 | 32 | 1979 | Esbjerg | A05 Reti Opening |
| 609. W Hartston vs O H Castro Rojas |
| 1-0 | 28 | 1979 | Esbjerg | D91 Grunfeld, 5.Bg5 |
| 610. Westerinen vs W Hartston |
| 1-0 | 42 | 1979 | Esbjerg | B22 Sicilian, Alapin |
| 611. W Hartston vs Reshevsky |
| ½-½ | 15 | 1979 | Esbjerg | B42 Sicilian, Kan |
| 612. J Kristiansen vs W Hartston |
| 0-1 | 40 | 1979 | Esbjerg | B43 Sicilian, Kan, 5.Nc3 |
| 613. W Hartston vs J Mestel |
| 0-1 | 38 | 1979 | Esbjerg | E61 King's Indian |
| 614. S Fedder vs W Hartston |
| ½-½ | 21 | 1979 | Esbjerg | D82 Grunfeld, 4.Bf4 |
| 615. W Hartston vs J O Fries-Nielsen |
| ½-½ | 44 | 1979 | Esbjerg | D85 Grunfeld |
| 616. W Hartston vs Suetin |
| ½-½ | 42 | 1979 | Chigorin Memorial | E81 King's Indian, Samisch |
| 617. Antoshin vs W Hartston |
| 0-1 | 41 | 1979 | Chigorin Memorial | A56 Benoni Defense |
| 618. W Hartston vs B Ivanovic |
| 0-1 | 36 | 1979 | Chigorin Memorial | E61 King's Indian |
| 619. J Augustin vs W Hartston |
| ½-½ | 28 | 1979 | Chigorin Memorial | A07 King's Indian Attack |
| 620. A Panchenko vs W Hartston |
| ½-½ | 41 | 1979 | Chigorin Memorial | B42 Sicilian, Kan |
| 621. A V Kharitonov vs W Hartston |
| 1-0 | 46 | 1979 | Chigorin Memorial | D74 Neo-Grunfeld, 6.cd Nxd5, 7.O-O |
| 622. T Ghitescu vs W Hartston |
| ½-½ | 16 | 1979 | Chigorin Memorial | D85 Grunfeld |
| 623. W Hartston vs L Barczay |
| ½-½ | 16 | 1979 | Chigorin Memorial | B56 Sicilian |
| 624. Sveshnikov vs W Hartston |
| ½-½ | 24 | 1979 | Chigorin Memorial | B22 Sicilian, Alapin |
| 625. N Rashkovsky vs W Hartston |
| ½-½ | 21 | 1979 | Chigorin Memorial | A05 Reti Opening |
Kibitzing
