[Event "Interland Nederland - USSR KNDB 1970"]
[Site ""]
[White "Davidov, Serguei"]
[Black "Wiersma, Harm"]
[Annotator "Hanco Elenbaas"]
[Result "1-1"]
[GameType "20"]
[Round "4"]
[Date "1970.06.27"]
[WhiteTime ""]
[BlackTime ""]
[TimeControl ""]
[WhiteUrl "http://toernooibase.kndb.nl/Afbeeldingen/Spelers/5332.jpg"]
[BlackUrl "http://toernooibase.kndb.nl/Afbeeldingen/Spelers/600.jpg"]
[WhiteTitle ""]
[BlackTitle ""]
[WhiteRating ""]
[BlackRating ""]
[DamboTopLine "Interland Nederland - USSR KNDB 1970 Round 4"]
[DamboBottomLine "Davidov, Serguei - Wiersma, Harm 1-1"]
[FEN "B:W16,26,27,28,32,35,39,42,44,45:B7,9,12,13,14,17,18,19,20,29"] 41. ... 20-25 42. 27-21 29-34 43. 39x30 25x34 44. 42-37 14-20 45. 32-27 20-24 46. 27-22 18x27 47. 21x32 13-18