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Shakhriyar Mamedyarov vs Sergey Karjakin
Gashimov Memorial (2017), Shamkir AZE, rd 2, Apr-22
Italian Game: Classical Variation. Greco Gambit (C53)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
Apr-23-17
Premium Chessgames Member
  An Englishman: Good Evening: Don't ignore this draw! If the database is correct, 12...Nxd4 might be the innovation of the year if the silicon monsters verify that Black has at least a safe half-point with this Knight sacrifice.
May-03-17
Premium Chessgames Member
  patzer2: If 16. Bxb3 then 16...Qxh3+ 17. Kg1 Ng3! fxg3 18. Qxg3+ = forces the draw by perpetual check.
May-03-17
Premium Chessgames Member
  patzer2: I think <An Englishman> is correct. After 12...Nxd4! Komodo 10.2 @ 39 depth and Houdini 5.1 @ 30 depth assess it as a draw with a 0.00 evaluation.
May-03-17  Iwer Sonsch: 14.Qxf3 Bxd4 15.Nxe4 dxe4 16.Qxe4 keeps the game interesting (-0.07 @depth 28).


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12...Nxd4(!) still seems to be the strongest move if Black doesn't mind a draw, but it is not quite forcing enough to speak of a perfect drawing combination.

May-03-17  Iwer Sonsch: <patzer2> Don't some chess engines have a feature where they rate draws as -7.00 in order to prevent them? If so, it should be easier to let the engines find the best ways out of this draw-attempting combination.
May-03-17
Premium Chessgames Member
  patzer2: <Iwer Sonsch> I'm not aware of any engines using -7.00 as a draw evaluation. All of them I've played with rate plus or minus as the evaluation in terms of material count pawn value. So -7.00 is the equivalent of seven pawns or a Rook and two pawns or two Bishop and one pawn up for Black.
May-03-17  computer chess guy: 12. .. Nxd4 is not a novelty: it had been played earlier in some correspondence games.

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