Vassily Ivanchuk vs Judit Polgar (2009)

Vassily Ivanchuk vs Judit Polgar
13th Unive Tournament (2009) · Nimzo-Indian Defense: Three Knights Variation (E21) · 1/2-1/2

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Oct-20-09		beenthere240: I think I read that 46...Qd4 is better than Rxf3. This move makes Rxf3 much stronger since the king can no longer chase the rook away and the queen is threatening to go to f2 with a mating attack. This line was on the tournament website. My Dutch isn't too good, so I'm not entirely sure of my interpretation.

Oct-20-09		wanabe2000: <beenthere240> see: http://susanpolgar.blogspot.com/ I think <zanshin> spotted it first during the game.

Oct-20-09		tamar: What's the draw against 64...Ke4? If 65 Re5+ Kd3 66 Nf4+ Kxd4 67 Rxe3 Kxe3 68 Nxg6 (to eliminate all pawns) fxg6 69 g4 hxg4+ 70 Kxg4 Bxh4! wins click for larger view

Oct-20-09		Eyal: <tamar: What's the draw against 64...Ke4? If 65 Re5+ Kd3 66 Nf4+ Kxd4 67 Rxe3 Kxe3 68 Nxg6 (to eliminate all pawns) fxg6 69 g4 hxg4+ 70 Kxg4 Bxh4! wins> Analysis by Dennis Monokroussos: <68.Nd5+ [instead of Nxg6] Kf3 69.Nf4 Bf2 (69...Bxg3? 70.Nxg6 fxg6 is stalemate.) 70.Nd3! click for larger view Is this ending a draw? I don't know; all I can say is that I haven't yet found a win. White has two big defensive ideas. Right here, stalemate tricks in case Black takes on g3, and in general the hope of reaching a drawn king vs. king, bishop and h-pawn ending. 70...Bd4 (70...Bxg3 71.Ne5+ Ke4 [71...Bxe5 stalemate.] 72.Nxf7 Be5 should be drawn.) 71.Kh2 Kg4 72.Kg2 f6 73.Nf4 Be5 74.Nxg6 Bd6 75.Nh8 Bxg3 76.Nf7 Bf4! (76...Bxh4 77.Nh6+ Kg5 [77...Kf4 78.Ng8 f5 79.Nh6 followed by 80.Nxf5=.] 78.Ng8 f5 79.Ne7 f4 80.Nd5 "wins" the f-pawn and forces a bishop + wrong rook's pawn draw.) 77.Nh8 Be3 (77...Kxh4 78.Ng6+ Kg4 79.Ne7 draws, as White can force the capture the f-pawn.) 78.Nf7 Kxh4 79.Nd6 Kg4 80.Ne8 f5 81.Nf6+ Kg5 82.Nd5 Bc5 83.Kh3 h4 84.Nc7 Be3 85.Ne6+ Kf6 86.Nc7 Bf2 87.Nd5+ Kg5 88.Nc7=> (http://chessmind.powerblogs.com/fil...)

Oct-20-09		tamar: That is cool analysis. Especially the Nd5-f4-d3 tour which sets up the stalemate themes. Worth spending some time on to determine if Black can win.

Oct-20-09		whiteshark: <tamar> Your sac will lose as you've shown. I wonder if the endgame after <67...Kxe3> isn't defendable click for larger view without it. <68.Kg2> to block black's king from f-file and with the idea of 69.Nh3 and Ng5/Nf2. Black has to force pawn exchanges himself to create a passed pawn. As all pawns are on the kingside the knight isn't inferior to the bishop.

Oct-21-09		tamar: <whiteshark> Perhaps that simple way is White's best. I could not find a win for Black.

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