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Vassily Ivanchuk vs Peter Leko
FIDE Jermuk Grand Prix (2009), Jermuk ARM, rd 3, Aug-11
Semi-Slav Defense: Stoltz Variation. Shabalov Attack (D45)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
Aug-12-09  Hesam7: Leko missed another win here. 31...hxg4 promised him a big advantage after both possible recaptures by White.
Aug-12-09  percyblakeney: <Leko missed another win here>

Sounds a bit strong to call it a win, my old engines see it as around -0.5 after 31. ... hxg4 32. Rxg4 and with both players in time trouble it was at least not easy to win. Ivanchuk was down to nine minutes with 20 moves to the time control and can consider himself fortunate to have gotten a draw out of the game though.

Aug-12-09  Hesam7: <pb> Leko certainly was not in any time trouble. Also after 31...hxg4 32.Rxg4 Qh2+


click for larger view

Can't Black win a pawn and keep his attack? I would suggest you run your engine from the above diagram. Speaking of engines this is from chessok:

<31...hxg4 32.Rxg4 Qh2+ 33.Rg2 Qd6 34.Ke2 Re5 35.h4 Rb5 36.Qc3 g6 37.b3 Rybka Aquarium (0:00.44) -0.67|d14 black stands slightly better>

I don't understand why Black does not play 33...Qxh3, maybe the engine needs more time (the above analysis was produced after only 44 seconds). Anyway I still think that after 31...hxg4 the win would have been just a matter of technique.

Aug-12-09  Hesam7: Btw this is what GM Petrosian gives in the official commentary on this game:

31...hxg4 32.hxg4 g5 33.Rd4 Qh2+ 34.Ke1 (34.Kf1 Re6) 34...Qg3+ 35.Kd1 Rxe3

Unfortunately he does not mention 32.Rxg4.

Aug-12-09  Tophie1984: @ Hesam7

After 31. ... hxg4 32.Rxg4 Qh2 33.Rg2 Qxh3?? White plays 34.Qb8+ Kh7 35.Rh2 winning the Queen and the game.

Aug-12-09  Hesam7: <Tophie1984> thx that explains Rybka's line. But still after 31...hxg4 32.Rxg4 Qh2+ 33.Rg2 Qd6:


click for larger view

Black's advantage is undisputed.

Aug-14-09  Knight13: <Black's advantage is undisputed.> Play that position as Black against someone your equal strengh and see if an undisputed (that you have 80%+ chance of winning) win'll result.

I don't think so; it's still a hard game. And black might end up losing if he's not careful.

Leko psychologically wanted a draw, and he got one. Doesn't matter what a computer thinks; they weren't using a damn computer and actually used their head.

Aug-14-09  Hesam7: <Knight13: <Black's advantage is undisputed.> Play that position as Black against someone your equal strengh and see if an undisputed (that you have 80%+ chance of winning) win'll result.>

How is that any relevant? There is an objective evaluation of the position which does not depend on me playing anyone else.

<Knight13: I don't think so; it's still a hard game. And black might end up losing if he's not careful.>

Yes, you might have a winning position and you might lose due to a mistake. It has happened, even to world champions.

<Knight13: Leko psychologically wanted a draw, and he got one. Doesn't matter what a computer thinks; they weren't using a damn computer and actually used their head.>

Well unlike you I don't know what is going on in Leko's head. But the fact is that 31...g5 was a blunder, and I know they were not using a "damn computer", in fact I am saying that computers don't appreciate how big Black's advantage is.

Aug-14-09  Knight13: My point is that Leko probably wanted to draw so he played ...g5 instead of going ...hxg4 and playing a better position that both sides have chances. Like I've stated, it's not an <undisputed> win for black. And I mentioned computer because these guys don't have access to a computer so they can't really play ...hxg4 and start day dreaming about how he's gonna screw that girl he met at Oxford University at 9 PM.

Leko's a <thinking> human, not a computer using lazy brain-dead idiot (like some people on CG.com) who rely on engines to criticize top-level players on what they missed instead of trying to find it themselves (they don't even post an incorrect suggestion or something logical that's wrong that indicates they used their head to think instead of relying on an "answer key"[computer]).

Note that this post is not directed at [attacking] you <Hesam 7> or any specified person.

Aug-15-09  Hesam7: <Knight13: My point is that Leko probably wanted to draw so he played ...g5 instead of going ...hxg4 and playing a better position that both sides have chances. Like I've stated, it's not an <undisputed> win for black. And I mentioned computer because these guys don't have access to a computer so they can't really play ...hxg4 and start day dreaming about how he's gonna screw that girl he met at Oxford University at 9 PM.>

Are you being intentionally thick? First of all by your logic in almost every position both sides have chances. Next I did not say "undisputed win" I said that Black's "advantage" was undisputed and that the win was a matter of technique. Third, everyone knows this is not advanced chess so quit repeating that they don't have access to computers. To sum it up your version of events is as follows:

"Leko has roughly 15 minutes for 9 moves, Chucky has less than 2. Leko sees 31...hxg4 gives him a superior position where White's defense is, to say the least, difficult (not to mention the clock situation) but he instead forces a draw with 31...g5."

Which is nuts. The simpler more plausible version is that Leko blundered, it happens, heck Kramnik did not see mate in one.

Finally I don't have anything against you it is just that sometimes your posts are moronic.

Aug-15-09  Knight13: <Hesam7> And you seem to have misunderstood what I meant, I did not accuse you of saying "undisputed" win did I?

<First of all by your logic in almost every position both sides have chances.> No, I did not. I said in the diagramed position it's not a clear win for black, so I mentioned that it's not an "undisputed" win.

<Third, everyone knows this is not advanced chess so quit repeating that they don't have access to computers. > And what I meant is that idiots like you (oh you say my posts are "moronic" and expect me to be nice? can't pick a better word? k then I won't bother to either) use computers to cricitize top players like Leko instead of using your brain. How many of you would actually see ...hxg4 leads to an "undisputed advantage" for black? OOPS, probably ZERO.

<"Leko has roughly 15 minutes for 9 moves, Chucky has less than 2. Leko sees 31...hxg4 gives him a superior position where White's defense is, to say the least, difficult (not to mention the clock situation) but he instead forces a draw with 31...g5." > And you didn't get my point AGAIN. I merely pointed out that Leko probably went for a draw because he wanted one (and I don't know if your 15 minute - 2 minute ratio is correct) with ...g5.

<Finally I don't have anything against you it is just that sometimes your posts are moronic.> Finally I don't have anything against you it's just that sometimes people misunderstand my posts and then call me a moron because I get the blame for someone else's misinterpretation.

Aug-15-09  Knight13: I mean, think about it, ...g5 forces the rook move and wherever that rook moves Black gets perpetual check.

He played it for a REASON, and I just thought the draw was what he had in mind. He moves the pawn, it attacks rook, rook moves wherever, then gets perpetual check, seemd to make sense to me he might've thought about drawing since the "undisputed win" position isn't a clear win or even an easy win for black with White having some drawing chances, however unlikely it may seem (as you've pointed out).

Aug-15-09  Hesam7: <knight13> this will be my last post on this topic.

(1) For the second time, I said that win was "a matter of technique" and that the "advantage" was undisputed. So read carefully before posting.

(2) < I merely pointed out that Leko probably went for a draw because he wanted one (and I don't know if your 15 minute - 2 minute ratio is correct) with ...g5.> My point was that under those circumstances he must have been out of his mind to go for a draw. The very least he could do is to see if Chucky blunders under time pressure then offer a draw if Chucky reached time control without any big mistakes. And I am pretty sure about the clock situation. Leko had more than 10 minutes and Chucky had less than 2.

(3) In my first post I claimed that Leko blundered without any reference to engines, later I said that engines were not correctly evaluating the position resulting from 31...hxg4. So your statement that <idiots like you use computers to cricitize top players like Leko instead of using your brain.> is just total nonsense.

(4) <How many of you would actually see ...hxg4 leads to an "undisputed advantage" for black? OOPS, probably ZERO.> how is that even relevant to analyzing the game? I can't criticize any move that Leko plays because he is a stronger player than me?

(5) <He played it for a REASON, and I just thought the draw was what he had in mind.> of course he had a reason but he was mistaken.

Aug-17-09  tibone: in combination with short castling h3,g4 only weakens the king side .
Aug-27-09  kingsindian2006: by move 15, its hard to imagine a draw coming . i give leko credit for cooling off the dynamic position to his favor.
Jan-07-10  ajile: When an opponent starts a wing attack the logical counter is to strike in the center.

8..e5 takes advantage of White's lag in development caused by g4 and h3. White can still play for a quick attack but if it fails then his own king is weak in a counterattack from Black.

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