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Julio Becerra Rivero vs Mariano Sana
32nd World Open (2004), Philadelphia, PA USA, rd 2
Sicilian Defense: Najdorf Variation. Adams Attack (B90)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Jan-21-12  Shams: <Fusilli> cooperates to allow an exotic mate.

<18...d5> (18...Bc6 maybe?) This pawn break is the siren song for Black in the Najdorf, but after <19.e5> White can comfortably charge forward on the King side. Black has no counterattack.

Sadly, there isn't time for 27...Nd8 due to 28.g5.

Jan-21-12
Premium Chessgames Member
  Fusilli: <Shams> You are right about 18...d5. One of my biggest weaknesses is misevaluation of positions (I guess that is one of the big differences between master level and higher level). I remember that I thought "ok, now I'll play on the queenside while he tries to build attack" without realizing it was so easy for him to set up the queenside so that I had no counterplay.

By the end, I had a couple minutes left, realized I was losing, and, embarrassingly, just didn't see the mate until it happened!

But I was thrilled to have played against a GM, and actually lasted almost all four hours. Believe it or not, he did use 1hr and about 45 minutes to beat me (while I used close to my 2 hours). He struck me as a quiet, gentle man. I asked him what I did wrong after the game and he explained to me what I should have done in the opening (I don't remember it now).

Jan-21-12  King Death: Unfortunately 18...d5 converts the position to a French structure where Black has captured on d4, so that he has no central break. The position after that can't really be a forced loss but I'd hate to play Black with such a small chance of counterplay.
Jan-21-12  Knight13: I don't see how Black could've cracked through on the Queenside after move 18. But 18...P-K4 is bad as well. What do you guys see as Black's best move on 18? ...R-Kt1?
Jan-21-12
Premium Chessgames Member
  Fusilli: <K> The computer suggests several choices for move 18, all of them trying to get something going on the queenside. They include 18...Qb8, 18...Qb7 and 18...Rb8, with evaluations in the +0.35/+0.6 range (note: I am not letting the computer think much, and I have an outdated engine). Of course, with 18...d5 19.e5 the evaluation goes up to about +1.

I find it striking, and very much computer-like, that one of the suggestions is 18...Qb7. Would you put your queen on the long diagonal when there is a bishop on g2 playing against a GM?

Well, just looked again and my engine seems to be settling for 18...Rb8

Jan-21-12  King Death: <Fusilli> The move 18...Qb7 isn't the first idea I'd have thought of and I'd need concrete reasons to play it because it looks like it could be dangerous. At the same time Black's going to play on the queenside so something like 18...Rb8 looks all right.

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