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Ljubomir Ljubojevic vs Wolfgang Unzicker
Milan (1975), Milan ITA, rd 8, Aug-28
Nimzo-Larsen Attack: Modern Variation (A01)  ·  0-1
ANALYSIS [x]

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Kibitzer's Corner
Dec-10-05  Knight13: Very nice! 127 moves. Nice endgame play. Love the opening play of White.
Dec-10-05  aw1988: This opening is dubious, I think it was refuted by Adams if I can find the game.
Sep-23-15  sfm: Tablebase:
95.-,Qc3+ =
101.Qb2? (Ka6,Kb6=)
106.-,Qg5? = (Qh6,Qf6 )
107.Ka4? (Ka6,Kb6=)

The tablebase also shows that apart from the few listed decisive mistakes, there are many impressive only-moves and strongest-moves.

Sep-23-15
Premium Chessgames Member
  Honza Cervenka: <sfm: Tablebase:
95.-,Qc3+ =
101.Qb2? (Ka6,Kb6=)
106.-,Qg5? = (Qh6,Qf6 )
107.Ka4? (Ka6,Kb6=)

The tablebase also shows that apart from the few listed decisive mistakes, there are many impressive only-moves and strongest-moves.>

It is apparent that Ljubojevic did not know the theory of K+Q+P(N) vs K+Q ending, which was then already well established and known. In very old books on endings like Fine's Basic Chess Endings it was suggested that weaker side defending this ending should keep his King on the central ranks of the opposite side of board, i.e. a5/a4 fields in this case, and it was exactly that what Ljubojevic was doing here. But already in 1950s Botvinnik and Keres in their analyses discovered that this recommended defense is insufficient and that the best place for the King of weaker side is the opposite corner of board. The winning method against the old defense was demonstrated by Botvinnik in quite famous game Botvinnik vs N Minev, 1954, which Ljubojevic apparently did not know then. If he had been familiar with it, he would not have played 107.Ka4(?).

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