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Vassily Ivanchuk vs Shakhriyar Mamedyarov
European Team Chess Championship (2007), Crete GRE, rd 7, Nov-04
Gruenfeld Defense: Russian. Accelerated Variation (D81)  ·  0-1
ANALYSIS [x]

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Kibitzer's Corner
Nov-05-07
Premium Chessgames Member
  Gypsy: What a fight!
Nov-05-07  micartouse: It takes guts to play a move like 19 ... Nb4. Nice concept.
Nov-05-07
Premium Chessgames Member
  Gypsy: Does Black have anything more than a draw if White returns the exchange <30.Rxc3 bxc3 31.Rxc3 Rxa2 32.Rd3...>? Black looks better, but White can probably afford to drop even a pawn because of the off color bishops.

On the other hand, White position looked pretty safe at any rate.

Nov-06-07  ahmadov: As I promised to some fellow users on Mamedyarov page, I am posting some computer analysis. Hope this will be useful to understand the game...
Nov-06-07  ahmadov: 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Qb3 dxc4 5.Qxc4 Bg7 6.e4 0-0 7.Be2 c6 8.Nf3 b5 9.Qb3 Qa5 10.Bd2 b4 11.Na4 Nxe4 12.Bxb4 Qc7 <if we should trust the computer, then 12…Qf5 was a better choice> 13.0-0 Be6 14.Qc2 Nd6 15.Rfd1 a5 16.Ba3 Bd5 17.Nc3 Na6 18.Rac1 Qb8 19.Ne5 Nb4! <the engine initially insisted that White should play 19…Qb7 in order to avoid the N fork on d7 but after a while it chose 19…Nb4 with some advantage for White comp. eval: 0.75. Interestingly, it again prefers 19…Qb7. It seems that Shark’s human logic was needed to decide which one was better> 20.Bxb4 axb4 21.Nxd5 cxd5 22.Nd7 Qc8 23.Nxf8 Qxc2 24.Rxc2 Kxf8 <the computer prefers 24…Bxf8. When watching the game with naked eye I thought Chucky was much better than Shark but it seems that exchanging a N to a R does not necessarily give advantage, more important is the position… This is something I realized better by analyzing this game> 25.b3 <according to the computer, 25…Rc6 was a better alternative> Ne4 <the computer says 25…Nf5 was better> 26.Rd3 e6 27.Kf1 Bf6 28.g4 Ra3 29.f4 Nc3 30.Rdd2 Kg7 31.Kg2 Bh4 32.Kf1 Bd8 33.Kg2 Bh4 34.Kf1 Kg8 35.Rb2 Ra8 36.Rbc2 Ra3 37.Rb2 Kf8 <in this equal position, Shark refuses again to draw by perpetual> 38.Rbc2 Be7 39.Kg2 Kg7 40.Rb2 <according to the computer, Chucky should have played 40.g5, but the situation is still equal, with Black having slight edge> h6 41.Rbc2 Bd6 42.Kf3 <another move taking Shark closer to the win – 42.f5 was better for White… the computer evaluates Black’s position as better than White’s for the first time since the start of the game 0.71> g5 43.fxg5 hxg5 44.Bd3 f6 45.Rf2 e5 46.dxe5 <another move that the computer did not like at all. Chucky should have played something like 46.Bf5 Now computer evaluation is 1.23> fxe5 47.Bf5 e4+ 48.Kg2 Bf4 49.h4 Kf6 <I think computer fails to understand Shark’s moves at this stage J. In fact, the computer does not like neither this nor the next move of Shark. It actually prefers 49…Be3, computer evaluating the situation as 0.70> 50.h5 Ke5 <a risky move, 50…Kg7 was better> 51.h6 d4 52.h7 Ra8 53.a3?! <it is indeed an inaccuracy, according to the computer… Chucky should have played 53.Rfe2. Should he play this move he would have 0.76 advantage. After 53.a3 the computer evaluated the situation as 1.32> d3 54.axb4 dxc2 <Chucky has no choice other than giving up his R> 55.Rxc2 Kd4 56.b5 <the situation is already lost for White but 56.Rxc3 was a better move for it> e3 57.b6 e2 58.b7 Rh8 0-1
Nov-06-07  ahmadov: This is a very interesting game indeed. It was very amazing to follow how carefully they both played until Chucky played 42.Kf3… Until this move, the sides were equal…
Nov-06-07  nikolajewitsch: I think one can basically sum up Chucky's probelm in the end by saying that his bishop did not cover his passed pawns' destination squares...of curse this is a little over-simplifying but defintely an important point.
Nov-06-07  Aspirador: <of curse> is probably what Chucky said after the game.
Nov-06-07  MamedyarovFan: Thanks <ahmadov> for the nice analysis and for carefully noting the stages at which the game turned, and when the game could have taken a different direction. It is fascinating that GM Mamedyarov refused to repeat the position to draw. I did not understand the computer's recommendation of 53.Rfe2 because GM Mamedyarov could play 53...d3. I must be missing something important about to happen then on the e4 square. In any case, even though I realy like GM Ivanchuk I am sure glad that GM Mamedyarov won :)
Nov-09-07  ahmadov: <MamedyarovFan> It was really very exciting to run this game on the engine, including the part when Shark refused draw by repeatition in two positions... More GMs would prefer a draw with Black against Chucky not risking to lose the game in such positions...
Oct-02-10  goodevans: <MamedyarovFan: ... I did not understand the computer's recommendation of 53.Rfe2 because GM Mamedyarov could play 53...d3.> A really difficult position to analyse without the aid of a computer, but I reckon it goes something like <53 Rfe2 d3 54 Rxc3 bxc3> (54 ... dxe2 55 Rc8) <55 Rxe4+ Kd5 56 Rxf4>
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