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Ye Jiangchuan vs Julio Ernesto Granda Zuniga
Biel Interzonal (1993), Biel SUI, rd 5, Jul-20
Sicilian Defense: Boleslavsky. General Variation (B58)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Jul-12-06  Inf: wow really nice game. 42.f3 sets a trap, and black walked right into it!! CC perhaps you can use this as a puzzle? on final position if white takes knight then 44.Qh4+ 45.Kg1 f2 winning white's queen and rook.
Jul-12-06  psmith: <Inf> Looking at this quickly with Fritz, it seems 41... Qg3? 42. Qf1? was a pair of blunders, after which 42... f3 wins for Black (and there is really no better defense than 43. Rxe3).

After 41...Qg3 White should just have played 42. Qxg3 fxg3 43. Rxe3 winning a piece, for example 43... Rdf8 44. Rxg3 and the attack evaporates.

But in fact after 41. Nc7 just about any other sensible move is good for Black. Fritz 5.32 likes 41... Qg6.

Jul-12-06  delterp: It is correct that after 42...f3 black is lost. There is no "trap". All moves lose.

43 ♗xf3 ♘g4 loses in a jiffy.

or

43 gxf3 ♗f4
44 ♕g2 (the only way to prevent mate) drops a rook to 44...♕e1+.

Ignoring the f3 pawn is also doom. 43 ♗b5 ♘g4

However, in my opinion, Fritz should be a tool to help analyze long or questionable lines. To soley rely on Fritz is to be a computer operator, NOT a chess player.

Jul-12-06  Inf: im with <delterp> Fritz should be a tool to help analyze long or questionable lines, and since fritz likes 41.Qg6 whats the winning line? ill bet is a long one...
Jul-12-06  psmith: <Inf>, <delterp>

here's how I use Fritz: I don't just let it run and see what it comes up with (that is stupid). I run it on a position, try out various moves, run it some more, etc. In short, I analyze like I always have but do a much better job because Fritz keeps me from missing obvious blunders, subtle defenses, etc. So I am not a computer operator.

As to 41...Qg6, Fritz just thinks Black has a solid advantage. And I agree. That is a positional judgment, not a claim to have a winning line. So I actually don't have any "long" line there at all.

Jul-12-06  psmith: <Inf>: After 41...Qg6 Black has first of all prevented Ne6 by White. Moreover, Black has multiple threats involving some combination of Rxd6, f3, Bd4, and Ng4, (as well as Qg3 if White moves the queen away) and White is hard pressed to defend against them all.

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