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Alexander Morozevich vs Shakhriyar Mamedyarov
Tal Memorial (2006), Moscow RUS, rd 7, Nov-14
Spanish Game: Morphy Defense. Breyer Defense Zaitsev Hybrid (C95)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
Nov-14-06  percyblakeney: A miracle save by Mamedyarov, Morozevich seemed to have a winning continuation with <75. Nc6+ Kf6 76. d7 Bxd7 77. Kxd7 g5 78. hxg5+ Kxg5 79. Ne5>:


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Nov-14-06  Maroczy: That's two games AM messed up, I think he had a win in the Carleson game.
Nov-14-06  percyblakeney: ...at least he missed the draw against Pono, this isn't Morozevich's tournament.
Nov-14-06  acirce: Yes, likely Moro blew some other win too. As it was, and to repeat myself, Mamedyarov's 78..Bb5!! seems to have been absolutely needed, as the similar-looking 78..Bc6 would have been met by 79.Ne6 gxh4 80.Nd4+ Kg4 81.Nxc6 h3 82.Ne5+! Kxg3 83.Nf3!! Kxf3 84.d7 h2 85.d8Q h1Q 86.Qa8+ winning! (Or actually 80..Ke4 81.Nxc6 hxg3 82.Nd4! and White queens with check if black doesn't allow 82..g2 83.Ne2 Ke3 84.Ng1.) Neat stuff.
Nov-14-06  djmercury: In the middlegame I think 26. Ngf5 was better (than Ndf5) Be5 27. Bxe5 Nxe5 28. Nh6+ Kg7 29. Ng4. This is a possible line, maybe someone can find some improvements. Black c3 pawn is about to fall and the d4 knight can jump to b5 or c6.
Nov-14-06  Ulhumbrus: Instead of 30 Rxc3,30 f4 attacks the Ne5 which obstructs the long diagonal for White's Q.With 30..Qa7! Black attacks White's Q before White can attack the Ne5 by f4.
Nov-14-06  djmercury: <Ulhumbrus> 30. f4 is not possible because of Nxe3.
Nov-14-06  Mameluk: Unfortunately after 30. f4 black takes a rook. White played probably very well till 75. Kd8 which was played very quickly.
Nov-14-06  Ulhumbrus: <djmercury> This suggests that White cannot wait even for 30...Nbc4 but has to play 30 f4 at once.
Nov-14-06  Ulhumbrus: If this ending is a technical win, it suggests that White does not win easily but wins instead with great difficulty, thereby appearing to win easily. An expert makes it look easy, as they say.
Nov-14-06  shintaro go: I'm disappointed that Moro was not able to convert a win here. But no one can claim he didn't try. 27..Kf8 and 78..Bb5 held the game for Mamed IMO.
Nov-15-06  djmercury: <<djmercury> This suggests that White cannot wait even for 30...Nbc4 but has to play 30 f4 at once.> I don't understand you, f4 looses the e3 rook without compensation. Moro played a good game and had a win in his hands in the endgame, but couldn't convert the advantage. Only possible improvement during the middlegame is Ngf5 instead of Ndf5.
Nov-15-06  MrPatzer: Would 86. Qg8+ have led to a win for White?
Nov-15-06  Albertan: Morozevich could have also won starting on move 75 with this continuation:

75. Nd3+ Ke4 76. Nf4 Kf5 77. d7 Bxd7 78. Kxd7 g5 79. Ng2 Kf6 80. Ne3 with a win according to endgame tablebases: Kf7 81.hxg5 Kg6 82. Nc4 Kf5 83. g6 Kxg6 84. Ne5+ Kf5 85. Kd6 Kf6 86. Kd5 Kf5 87. Kd4 Kf6 88. Ke4 Kg5 89. Kf3 Kf5 90. Nd3 Kg5 91. Nf4 Kh6 92. Nh3 Kg6 93. Ke4 Kf6 94. Kf4 Kg6 95. Ke5 Kh6 96. Kf5 Kh7 97. Nf4 Kg7 98. Nxh5+ Kf7 99. g4 Ke7 100. g5 Kd6 101. g6 Kc5 102. Ke4 Kb5 103. g7 Kb4 104. g8=Q Kc3 105. Qd5 Kc2 106. Qc4+ Kb1 107. Qc3 Ka2 108. Nf4 Kb1 109. Nd3 Ka2 110. Qb2#

Nov-15-06  Albertan: <MrPatzer: Would 86. Qg8+ have led to a win for White?>

I don't see how and neither does Shredder,Rybka,Junior 9 nor Hiarcs. You can download the six men endgame tablebases from here and try to find a win if you want to:

http://kd.lab.nig.ac.jp/chess/table...

Nov-15-06  Sequoia:


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Suggested by Kasparov 43. Nb7 Nxd1 44. a5!...

Nov-15-06  Ulhumbrus: <djmercury: <<djmercury> This suggests that White cannot wait even for 30...Nbc4 but has to play 30 f4 at once.> I don't understand you, f4 looses the e3 rook without compensation.> This is a typing mistake. I mean that White has to play 29 f4 before Black attacks the R by 30...Nbc4. On 29 f4 Nec4 the Re3 is able to move. However there happens to be another point to this as well. On 29 f4 Nec4 it is the Ne5 which has gone to c4, not the N on b6. Now on 30 Rxc3 the Nb6 obstructs ..Qa7 so Qd4 becomes a threat.
Nov-16-06  ahmadov: <Sequoia:> <Suggested by Kasparov 43. Nb7 Nxd1 44. a5!...> It is strange to see people saying that Mamed would have replied with 43...Nxd1 if Moro had played 43.Nb7. They forget that there are other respenses like 43.Nc4 as suggested by Fritz 9.
Nov-16-06  ahmadov: Sorry, 43...Nc4 (as Black's move)
Nov-16-06  ahmadov: As for White's move, 43.Nb7 is Fritz 9's initial suggestion. After some calculation the machine prefers 43.Nc6.

So, Kasparov's suggestion is not the ideal one.

Nov-16-06  ahmadov: So, one can say that Moro thinks more computer-like than Kasparov (43.Nc6 played in the game).
Dec-16-08  apexin: after suffering defeats around this time with modern steinitz variation memedyarov decides to change it to a solid breyer.After 30...Qa7 black,s pieces are more active than whites,and looks like hes got enough compensation.
Feb-03-09  WhiteRook48: why not 102. Kg5, at least there's no stalemate and it's insufficient mating material instead?

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