[Event "Friendly Blitz Game"] [Site "Zurich, Switzerland"] [Date "1965.??.??"] [Round "?"] [White "Paul Keres"] [Black "David Bronstein"] [Result "0-1"] [ECO "C33"] [Annotator "peter"] [SetUp "1"] [FEN "r4rk1/2p2p1p/1p3p1b/8/1K1nPp2/2PP4/PP5P/R1B2B1R b - - 0 19"] [PlyCount "9"] [EventDate "1965.??.??"] [EventType "blitz"] [SourceVersionDate "2020.04.01"] 19... Ra4+ $3 20. Kxa4 Ra8+ 21. Kb4 Bf8+ {the point of the rook sac was to clear this square for the bishop} 22. Kc4 b5+ {and Keres resigned because of} 23. Kxd4 (23. Kd5 Rd8#) 23... Rd8# 0-1