Letsplaychess.com Instructive Game : Restrain, Blockade, Undermine, Queen! [ Event "URS-ch21"] [Site "Kiev"] [Date "1954.??.??"] [EventDate "?"] [Round "?"] [Result "0-1"] [White "Efim Geller"] [ Black "Yuri Averbakh"] [ECO "A04"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "92"]...