Anyone would like to add some notes to it?

[Event "Aerosvit GM"]
[Site "Foros UKR"]
[Date "2006.06.22"]
[Round "6"]
[White "Harikrishna, P."]
[Black "Mamedyarov, S."]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "2680"]
[BlackElo "2699"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 Bb4 5. Nxe5 O-O 6. Bd3 Nxd4
7. O-O d6 8. Nc4 Bxc3 9. bxc3 Ne6 10. Ne3 Re8 11. c4 Nc5 12. f3 Nfd7
13. Rb1 Ne5 14. Bb2 f6 15. Qd2 Be6 16. Rbe1 Qd7 17. f4 Nexd3
18. cxd3 f5 19. Rf3 Re7 20. Rg3 Rf7 21.exf5 Bxf5 22. Rg5 Bxd3
23. Ng4 Bg6 24. f5 Rxf5 25.Nh6+ gxh6 26. Qd4 Ne6 27.Qh8+ Kf7
28. Rxf5+ Bxf5 29. Qf6+ Kg8 30.Qxf5 Nf8 31. Qd5+ Qf7 32. Re7 1-0

Baburin wrote in offcial web page: "Black solved his opening problems
(if there were any) and was no worse. Later Mamedyarov played carelessly
and allowed White to develop the initiative."

Can anyone suggest where black played carelessly?

I think that after 13...Ce5 (good looking knights) there aren't black
Knights nor Bishops which control the dark squares..., there were where
white developed an initiative that could't be contested. Intuitively I
think that the last error was 18...f5 given up even more the dark
square control to white hands.

Antonio Torrecillas ha escrito:
..
Anyone would like to add some notes to it?

[Event "Aerosvit GM"]
[Site "Foros UKR"]
[Date "2006.06.22"]
[Round "6"]
[White "Harikrishna, P."]
[Black "Mamedyarov, S."]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "2680"]
[BlackElo "2699"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 Bb4 5. Nxe5 O-O 6. Bd3 Nxd4
7. O-O d6 8. Nc4 Bxc3 9. bxc3 Ne6 10. Ne3 Re8 11. c4 Nc5 12. f3 Nfd7
13. Rb1 Ne5 14. Bb2 f6 15. Qd2 Be6 16. Rbe1 Qd7 17. f4 Nexd3
18. cxd3 f5 19. Rf3 Re7 20. Rg3 Rf7 21.exf5 Bxf5 22. Rg5 Bxd3
23. Ng4 Bg6 24. f5 Rxf5 25.Nh6+ gxh6 26. Qd4 Ne6 27.Qh8+ Kf7
28. Rxf5+ Bxf5 29. Qf6+ Kg8 30.Qxf5 Nf8 31. Qd5+ Qf7 32. Re7 1-0

Baburin wrote in offcial web page: "Black solved his opening problems
(if there were any) and was no worse. Later Mamedyarov played carelessly
and allowed White to develop the initiative."

Can anyone suggest where black played carelessly?

Baburin wrote in offcial web page: "Black solved his opening problems
(if there were any) and was no worse. Later Mamedyarov played carelessly
and allowed White to develop the initiative."

Can anyone suggest where black played carelessly?

I think Black spent too many turns repositioning his Knights before he
finished deploying his forces. For example, 9. ... Ne6 10. ... Nc5 is
slower than 9. ... Nc6 10. ... Be6. I also don't particularly like 12.
.... Nd7 13. ... Ne5 but I can't suggest alternatives which you rightly
said you should be able to do before calling a move a mistake. The
King's knight uses four tempos only to be exchanged for a one tempo
"bad" bishop. Although there's some compensation in neutralizing
White's bishop pair it's probably not adequate for so many tempos in
this position which could be better served by bringing out more pieces
or claiming more space.

Antonio Torrecillas wrote:
Anyone would like to add some notes to it?

I worked backwards through the game. I can see Black's lost as early as
turn 24. Rybka can see Black's losing as early as turn 19. However,
Rybka's only saving moves on turn 18 are defensive ones, so White
certainly had the initiative by the end of turn 18.

23. Ng4 Bg6

23. Black's lost. I thought a simple Kf8 would give Black a survivable
game since it makes f5 and Nf6 less effective. However, when Rybka
compares the lines Bg6 = -2.68 and Kf8 = -1.78, so while this is an
improvement it's still losing. I stop here since it's getting beyond
what I can see and computer analysis is less instructive.

24. f5 Rxf5

24. Black's lost. Any bishop move allows the g7 pawn to be taken, after
which Nf6+ forking the queen and king is possible. Rxf5 is the only
other move that eliminates the pawn that is now attacking the bishop.

25.Nh6+ gxh6

25. Black's lost. White forces him to accept the sacrifice or lose the
exchange (a knight for a rook). Harikrishna's forsight is amazing.The
knight sacrifice is solid.

26. Qd4 Ne6

26. Black's lost. White is threatening Qh8+, Qg7#. Black's 26. ... Re5
is worth consideration, but after 27. Rgxe5 dxe5 28. Qxe5 Ne6 and White
still has a winning attack similar to the one he achieves in the real
game.

27.Qh8+ Kf7

27. Black's lost. 27. ... Kh7 is the only valid move.

28. Rxf5+ Bxf5

28. Black's lost. 28. ... Bxf5 is practically forced to preserve the
material balance.

29. Qf6+ Kg8

29. Black's lost. If 29. ... Ke8 (the only other valid move) 30. Qxf5
and the pinned knight will fall. Attempting to defend it with 30. ...
Ke7 fails due to 31. Qf6+.

30.Qxf5 Nf8

30. Black's lost. If 30. ... Nc5 (the only other move holding the
material balance) it's 31. Qf6 and mate is inevitable, probably on g6
or h8.

31. Qd5+ Qf7

31. Black's lost. How else does Black block check? 31. ... Ne6
immediately loses the knight. 31. ... Qe6 immediately losses the Queen.

32. Re7 1-0

32. Black's lost. After 32. ... Qxd5 33. Rg7+ Kh8 34. cxd5, Black has
to block 35. Rg4#. To do that, he'll have to sacrifice his knight or
rook!

On 2006-06-27, Antonio Torrecillas wrote:
Anyone would like to add some notes to it?

[Event "Aerosvit GM"]
[Site "Foros UKR"]
[Date "2006.06.22"]
[Round "6"]
[White "Harikrishna, P."]
[Black "Mamedyarov, S."]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "2680"]
[BlackElo "2699"]
...
Baburin wrote in offcial web page: "Black solved his opening problems
(if there were any) and was no worse. Later Mamedyarov played carelessly
and allowed White to develop the initiative."
Can anyone suggest where black played carelessly?

Perhaps 12...Nfd7 15... Be6 or 16...Qd7 ?

Malcolm Pein comments in http://www.chesscenter.com/twic/twic.html ...

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.Nxe5 0-0
(5...Nxe4 6.Qg4 Nxc3 7.Qxg7 Rf8 8.a3 Nxd4 9.axb4 Nxc2+
10.Kd2 Nxa1 11.Kxc3 is good for White)
6.Bd3 Nxd4 7.0-0 d6 8.Nc4 Bxc3
(8...Bg4 9.f3 Be6 10.Bg5 h6 11.Bh4)
9.bxc3 Ne6 10.Ne3 Re8 11.c4 Nc5 12.f3 Nfd7
(12...Nh5!? 13.Nd5 c6 or 13.Bb2 Nf4 14.Re1 Qg5 )
13.Rb1 Ne5 14.Bb2 f6 15.Qd2 Be6
(15...c6 16.Rfd1 Qc7)
16.Rbe1 Qd7?!
(16...c6)
17.f4! Nexd3
(I don't understand this as corrects White's pawn structure and
gives him a mobile centre, but if 17...Nc6 18.Nd5 Qf7 19.e5! f5
20.exd6 cxd6 21.Rf3! or 17...Nf7 18.f5 wins)
18.cxd3 f5 19.Rf3 Re7
(19...fxe4 20.Rg3 Re7 21.f5 Bxf5 22.Nd5!)
20.Rg3 Rf7 21.exf5 Bxf5 22.Rg5! Bxd3 23.Ng4 Bg6
(23...Kh8 24.Rxc5 dxc5 25.Ne5 Qe6 26.Nxf7+ Qxf7 27.Qxd3)
24.f5! Rxf5 25.Nh6+!!
(opens up the long black diagonal by force)
25...gxh6 26.Qd4 Ne6
(26...Re5 27.Rgxe5 dxe5 28.Qxe5 Ne6 29.Qh8+ Kf7 30.Rf1+ Ke7
31.Ba3+ c5 32.Bxc5+ Nxc5 33.Qf6+ Ke8 34.Qf8 mate)
27.Qh8+ Kf7 28.Rxf5+ Bxf5 29.Qf6+ Kg8 30.Qxf5 Nf8 31.Qd5+ Qf7 32.Re7 1-0
(after 32...Qxd5+ 33.Rg7+! Kh8 34.exd5 a series
of deadly discovered checks will follow.)

Like in the Good Old Days :-)

Regards, Peter

--
AUS/TAS/DPIW/CIT/Servers hbt/lnd/l8 6233 3061 http://www.pjb.com.au
Pasaré, pasarémos dice el agua y canta la verdad contra la piedra
-- Pablo Neruda

En/na ha escrit:
Antonio, where do you believe Black played carelessly? Black made some
mistakes, but "careless" is an odd way to describe his game.

wrote:

Baburin wrote in offcial web page: "Black solved his opening problems
(if there were any) and was no worse. Later Mamedyarov played carelessly
and allowed White to develop the initiative."

Can anyone suggest where black played carelessly?

I worked backwards through the game. I can see Black's lost as early as
turn 24. Rybka can see Black's losing as early as turn 19. However,
Rybka's only saving moves on turn 18 are defensive ones, so White
certainly had the initiative by the end of turn 18.

I agree with you that Black is lost at move 24th.

Alternatives between moves 19th and 22 give white clear advantage:
22...h6 23.Rxf5 Rxf5 24.Nxf5 Qxf5 25.Re7
20...fxe4 21.f5 Bxf5 22.Nd5
19...fxe4 20.Rg3 Re7 21.f5 Bxf5 22.Nd5

That can mean 22...Bxd3 was a mistake bur white was better at 19th move.

--------------

I found strange at first look the sequence 17...Nexd3 18.cxd3 f5.
Maybe Baburin was thinking about that moves when He wrote "black played
carelessly" (because black did not saw 19.Rf3! great move).

A classical player like Tarrasch would have written "black made a big
mistake opening the long diagonal for white Bb2".

But if a superclass player plays it, facts can not be so simple. Maybe
black predicted white would obtain a better position reinforcing his
position and preparing or e5 or some g4-g5 later. Black can have feel He
must play active and better now than later. Maybe miscalculated
something like expecting only 19.exf5 Bxf5 20.Nxf5 Qxf5 21.Qc3.

I do not know what escaped to black nor if He was worse with all moves.
Rybka and Fritz suggest 18...b5!? as another active plan.

Antonio T.