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Gata Kamsky vs Vasyl Ivanchuk
Bazna Tournament (2009), Bazna ROM, rd 5, Jun-18
Sicilian Defense: Najdorf Variation. English Attack (B90)  ·  0-1

8
7
6
5
4
3
2
a
1
b
c
d
e
f
g
h
White to move.
ANALYSIS [x]
Notes by Stockfish 9 v010218 (minimum 6s/ply)better is 13...Rad8 14.Nb3 Na5 15.Qd3 Nxb3 16.cxb3 Bc6 17.b4 b5 = -0.17 (27 ply)better is 14.Bxd4 e5 15.Be3 Red8 16.fxe5 dxe5 17.Nd5 Nxd5 18.exd5 = +0.34 (21 ply)= -0.23 (21 ply) 15.f5 exf5 16.Rxf5 Nd7 17.Qc4 Ne5 18.Qb3 Bf6 19.Rdf1 Qe7 = +0.22 (20 ply) ⩱ -0.95 (26 ply) 19...g6 20.h3 Qc6 21.Bg1 f5 22.c4 Nf6 23.Qc3 Rxd1 24.Rxd1 ⩱ -1.17 (23 ply)= -0.41 (25 ply) after 20.Bg1 g6 21.Qe4 f5 22.Qc2 Bf6 23.Qb3 b5 24.axb5 axb5 better is 20...Nf6 21.Nxf6+ Bxf6 22.Qb4 Rd5 23.Kg1 Red8 24.Qb3 Ra5 ⩱ -0.87 (27 ply)= -0.19 (22 ply)better is 21...Rd6 22.Qe4 g6 23.Ng3 f5 24.Qc2 Red8 25.Ne2 Qc4 ⩱ -0.68 (23 ply)= 0.00 (24 ply)better is 28.Rxh4 f5 29.Rh3 Re4 30.Qb3+ Qd5 31.Qxd5+ Rxd5 32.Rd3 = -0.37 (25 ply) ⩱ -0.92 (24 ply)better is 29.Rd3 f5 30.Rxh4 h6 31.Qb3+ Kh8 32.Rhh3 Qxf4 33.Rhf3 ⩱ -0.62 (23 ply)better is 29...Bh6 30.Rd3 Kg7 31.Rhf3 Be3 32.h3 Bxg1 33.Kxg1 Re7 ⩱ -1.12 (25 ply)better is 30.Rd3 Bh6 31.Qb3+ Kg7 32.Qb6 Rd7 33.Rxd4 Rxd4 34.Qxd4 ⩱ -0.62 (23 ply) ⩱ -1.12 (25 ply) 32.Bg1 Qe4 33.Qd1 Rxf5 34.Rxf5 Qxf5 35.Rd3 h3 36.Rxd4 ⩱ -1.03 (26 ply)-+ -7.45 (27 ply); 33.Bg1 Qxh4 34.h3 Qe4 35.Rd3 Rxf5 36.Qd1 Rg5 37.Qf3 f5 -+ -7.64 (25 ply)0-1

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
FEN COPIED

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Kibitzer's Corner
Jun-18-09  banane: duhhhh!!!!
Jun-18-09  eric the Baptist: 'Duh' is right. How could Gata miss that?!
Jun-18-09  amadeus: 32.Rxh4 - lol [Ivanchuk's mental notes]

An awful blunder by Kamsky -- in severe timetrouble, no doubt. This is so easy, that I am not sure if CG will be able to use it as a monday puzzle.

Jun-18-09  DeepFriedLiver: What happened to Kamsky?! He's on the losing end of a Monday-level puzzle (32 ...?). Time trouble?
Jun-18-09  acirce: He probably didn't miss the idea itself - but noted that it wasn't a threat because of Bg1. Also, on ..Qxf2 which <is> a threat, he would have had Rxh7+! with mate in a few moves after ..Kxh7 Rh3+. So, he thought, I can safely take on h4. Then, "d'oh!" indeed.
Jun-18-09  wanabe2000: What a finish! Looks like Ivanchuk's
14.....Bc6 is a novelty, at least not in the CG database. Kamsky's 22.c4 gives Ivanchuk a passed pawn which became dangerous later and does 26....h4 deserve a (!). The only move I predicted was 28.....Qd4 and with 30....Qe2 the exchange of Queens would give a nice advantage to black. White's blunder 32.Rh4?? loses immediately but, I think, his position was tenuous, with Ivanchuk's passed pawn and control of the center. Exciting game.
Jun-18-09  Marmot PFL: As I said on the other page taking pawns in time pressure is very dangerous. This is speaking as an amateur who has lost several important games that way but it seems to apply to GMs also.
Jun-18-09  hedgeh0g: A shame about the blunder, although black's position looked strong anyway. It's interesting how Chucky didn't seem to mind his pawns getting shattered, because he ended up with active pieces and a strong passed pawn.
Jun-18-09  Jason Frost: What was the point of 28. Rff3 instead of something like f5?
Jun-18-09  redwhitechess: btw, what's the best move for white's 32.... ? maybe 32.Qxb7 ?
Jun-18-09  niemzo: 32.Qxb7 loses to Qxf2. Bg1 is propably what I would play to solve the back rank problem.
Jun-19-09  kurtrichards: Mr. Kamsky should take a vacation.
Jun-19-09  newton296: <niemzo: 32.Qxb7 loses to Qxf2. Bg1 is probably what I would play to solve the back rank problem.>

Bg1 huh ? well look again my friend , cause you just lost the rook at h4!

Jun-19-09  niemzo: You should look again,my friend. I proposed Bg1 instead of Rxh4, so the rook is on h3.
Jun-20-09  totololo: I think that the plan with 23.c4 is wrong as he gives black a passed pawn and more dangerous the h5 pawn with tempo.

h5 pawn is important as Qc6 is on the great diagonal and his advance to h3 open a full avenue to the white king...

The white position is dificult as the white Queen is in opposition with the black rook so it is the inversion R+Q with the rook in front that was necessary or as it was not time to do that just a lateral position for the white queen.

It is interesting how fast the White position goes down... even without the final blunder the white position was difficult and it seems to me that black had winning chances.

I would be very interested if someone can run Fritz/Rybka in the position without the blunder to see how much the black advantage was evaluated...

As a player I prefer black position by far. White was not clear if he wanted to atttack or just attack a bit, wait a bit,....

Jun-20-09  jmboutiere: 18.c3 - Rybka 3 - 0.60
24.Rg3 - Rybka 3 - 0.21
26. ... h4 - 0.09
32.Rxh4 -5.09
32.Bg1 - 0.51
Jun-20-09  Ulhumbrus: The move 15 Bc4 falls into the opening sacrifice which occurs often in the King's pawn open game : Black offers a piece on e4 and then plays the fork ...d5.
Jun-21-09  totololo: TY <jmboutiere> very interesting!

<Ulhumbrus> I fully agree!

Jun-21-09  notyetagm: MIG:

<It was an unusual tactic, at least, coming soon to the back-rank section of your next tactics book.>

Jun-21-09  notyetagm: <acirce: He probably didn't miss the idea itself - but noted that it wasn't a threat because of Bg1. Also, on ..Qxf2 which <is> a threat, he would have had Rxh7+! with mate in a few moves after ..Kxh7 Rh3+. So, he thought, I can safely take on h4. Then, "d'oh!" indeed.>

Yes, this is a *really* nasty tactical idea, especially in time trouble.

With more time on his clock, Kamsky almost certainly would have closely examined the queen check before taking the Black h4-pawn.

Jun-22-09  champsylove: An interesting Nadjorf, one to add to the game collection.
Aug-08-10  Whitehat1963: I think this makes for a good and funny Monday puzzle.
Mar-27-17  clement41: 32...Qxf2?? and it is white that mates, starting Rxh7+ Kxh7 Rh3+ Bh6 (...Qh4 does not help) Qf7+

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