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Boris Gelfand vs Cristobal Henriquez Villagra
World Cup (2015), Baku AZE, rd 1, Sep-11
Slav Defense: Quiet Variation. Pin Defense (D12)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
Sep-11-15
Premium Chessgames Member
  Peligroso Patzer: It should first be noted that at the end of the game both players had less than one minute remaining on the clock (with a 30-second increment).

Apparently Gelfand played 73. Qb5 and offered a draw. Henriquez accepted and then pointed out that 73. Bc1 would have been strong for White. (For example: 73.Bc1 Re8 74.Bd3 Qd6 75.Qb4 Nd5 (75...Nc3 76.Bxe3+–) 76.Qd4 and White is winning at least a piece.)

Relieved that Gelfand had missed the winning continuation (73. Bc1), the 19-year-old Henriquez probably did not notice that Black (after Gelfand’s actual 73. Qb5) could have taken the initiative and played for the full point with 73. … Qe4! (or maybe he was sufficiently pleased to escape with half a point, that he deliberately eschewed the quest for a full point, which could have become a lesson in the dangers of hubris).

Sep-11-15  Macbeth: Does Gelfand have 73. Rc1 pinning the black knight on b1 and also menancing Black Queen with Ba3? I don´t see any good defense, considering that Black tower on e8 is also pinned...
Sep-11-15
Premium Chessgames Member
  Peligroso Patzer: <Macbeth>: Your suggested 73. Rc1 would also have been winning. The move reportedly pointed out by Henriquez (73. Bc1, which overloads the Black queen in its defense of e3 and d8) is probably White's strongest among several winning continuations at move 73. Apparently, Gelfand was too short of time to realize that he was winning in the position where he made his draw offer.
Sep-11-15
Premium Chessgames Member
  Peligroso Patzer: My previous comment should say that Gelfand was winning <before> playing his inaccurate 73rd move. After 73. Qb5, Black would have been better if he had continued 73. ... Qe4, as noted above.
Sep-11-15  Macbeth: Your are right <peligroso>. Bc1 looks even better. Time rush for both players
Sep-11-15
Premium Chessgames Member
  tamar: I missed the end of the game, so was dumbfounded when I saw it listed as drawn.

Around move 53, Gelfand had a time advantage of around 10 minutes versus 30 seconds when he started to misplay his winning position in his opponent's time pressure.

Henriquez played mostly well, but missed 56...Ne5 which would have won him the exchange, but with a murky position.

Gelfand must have sensed he was giving Black chances, as he used up most of his remaining time took, but erred again with 69 Rb5 not noticing that 69...Nd6 wins the exchange again because the rook has no safe moves.

That might be the reason Gelfand took the draw, rather than the actual position after 72...Ne3

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