Ruslan Ponomariov vs Shakhriyar Mamedyarov (2010)

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Ruslan Ponomariov vs Shakhriyar Mamedyarov
Dortmund Sparkassen (2010), Dortmund GER, rd 5, Jul-19
Nimzo-Indian Defense: Classical Variation (E32) · 1-0

ANALYSIS [x]

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Jul-19-10		zluria: A very well played game by Pono. White had the advantage throughout, although it underwent certain transformations. The opening was a surprise, since Mamedyarov never plays the Nimzo. Pono played the classical Nimzo, and deviated into a relative sideline with 7. Bg5 (7. Nf3 is the more common move - Knights before Bishops!) White's play here looks a bit risky, developing the Q - side but leaving the King stranded in the center. Black attempts to take advantage of this with the aggressive 10. ... Qd5 , but after 13. f3 he decides to trade Queens with Qc6 (I like 13. ... f5). This leads to a remarkable endgame. Until move 26, White holds a slight edge because of Black's weak c pawn. After 27. Rxd6 cxd6, it's been transformed into a weak d pawn. Black gets some counterplay on the Kingside, and after 32. Rg8, he seems to have equalized. The game still looks equal around move 40, but 40. ...Nh6 must be wrong (I like 40. ... Rc4, to answer 41. Nd5 with Bxd5). White plays a powerful sequence of moves, forcing his King forward, until penetration is unstoppable.

Jul-20-10		whiteshark: "Ruslan managed to maintain a slight edge as White well into the middlegame, but seemed unable to take it any further, and after 30 moves, it seemed as if a draw would be the likely outcome. If this was not to the Ukrainian’s liking, it seemed even less so to the Azerbaijan GM, who declined an exchange of rooks which led him to a difficult position. He never got himself out of it, and Ponomariov squeezed and pushed until his inevitable king penetration left things clear." http://chessbase.com/newsdetail.asp...

Jul-20-10		Ulhumbrus: 41...Nh6 enables White to gain control of the c file by 42 Nd5+ as the N arrivers with check, the black Bishop on e6 is tied to the defence of the Rook on c8 and cannot therefore take the N, and on 42...Kf7 43 Nc7 obstructs Black's Rook on c8. This suggests playing 41...Ke7 instead of 41...Nh6 so that on 42 Nd5+ Kd7 keeps the N out of c7.

Jul-20-10		znsprdx: It is weird - I've lost lots of games like this (usually on time in rapids or blitz...)White had nothing really - contrary to what <zluria> suggested...[but I agree later Black equalized] hard to believe that one move 41...Nh6 would make all the difference...harder still to understand how a 2700+ player would make it...since the time time pressure was past

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