Author: Uri Blass
Date: 13:21:33 02/14/05
Go up one level in this thread
On February 14, 2005 at 15:50:50, Arturo Ochoa wrote: >On February 14, 2005 at 07:11:54, Uri Blass wrote: > >>On February 13, 2005 at 17:30:24, Anthony Cozzie wrote: >> >>>Game Summaries: >>> >>>Game 1: Fafis - Zappa (0 - 1) (Forfeit). >>> >>>Rafael either slept in or had internet problems. I was a bit disappointed at >>>not getting to play, but at the same time I was happy not to have to play Fafis, >>>which by all accounts is quite strong for its seeding. >>> >>>Game 2: Zappa - Hossa (1 - 0) >>> >>>Hossa played the French defense, and Zappa accumulated what it thought was a >>>good position before missing something and dropping to a draw score. Hossa >>>blundered with Kh6 [I have to admit that Zappa expected this move :(] and Zappa >>>was able to win with a nice combination in the following position: >>> >>>[D]8/p2Q3p/1p4pk/4q3/3p1NP1/1P3P2/P6K/8 w - - 0 43 >>> >>>Here white wins with the (simple for computers) Qxd4 Qxd4 g5! and white gets the >>>Queen back by knight fork with an easy ending. >>> >>>Game 3: Amateur - Zappa (0 - 1) >>> >>>A sicilian. Amateur's mistake was probably a5 instead of h4, and after that >>>Zappa was never really in any trouble and gradually increased its advantage >>>until getting the full point. >>> >>>Game 4: Zappa - Fruit (1 - 0) >>> >>>Zappa foolishly traded its dark squared bishop on move 10 in the Nimzo, but >>>Fruit recaptured with the g pawn rather than the Queen (=). Zappa then managed >>>to open the f file and line up ever single major piece against Fruit's King. >>> >>>[D]4b2r/3q3k/r3p2p/2p1pp2/p1P1P2Q/P4RR1/1P2B1PP/6K1 w - - 0 34 >>> >>>Fruit realized the trouble too late, and was forced to give 2 pawns. The >>>endgame was still not trivial to win until Fruit dropped into a lost KRPPKR >>>ending. It was actually quite instructive to watch the tablebases play it out >>>and grind out the mate in 40. >>> >>>Game 5: SOS - Zappa (0 - 1) >>> >>>A closed Sicilian, where SOS played passively and Zappa took control of the open >>>files and won behind its strong heavy pieces. Not much to report here, aside >>>from the fact that I had serious trouble sleeping after this game due to an >>>excess of nervous energy:) >>> >>>Game 6: Zappa - Pharaon (1 - 0) >>> >>>This and the game against Movei were by far my favorite games of the tournament. >>> Arturo decided to play a sideline here (6. g3) rather than Be2, because after >>>Be2 Pharaon had scored very well in recent games. Zappa played correctly (g4, >>>e5) but I think Pharaon blundered with f6 instead of g6+Ng7: >>> >>>[D]r3nrk1/1pqbbppp/p3p3/3pP1P1/Pn3P2/1NN1B3/1PP3BP/R2Q1RK1 b - - 0 15 >>> >>>This allowed Zappa to open the position with gxf6 and f5! while Pharaon's pieces >>>were still badly placed. >>> >>>[D]r4r1k/1pq1b1np/p7/4pb2/Pn2B3/1NN1B3/1PP4P/R2Q1R1K w - - 0 24 >>> >>>Here Zappa sacrificed the exchange with Rxf5!?, but by move 33 it had won back >>>the exchange with a superior ending due to Pharaon's weak pawnstructure: >>> >>>[D]5r1k/6n1/p1pb2p1/4p1B1/P7/1N6/1PP4P/6RK w - - 0 34 >>> >>>Pharaon then gave the exchange for 2 pawns leading to the following position, >>>which I believe is won for white: >>> >>>[D]8/8/p1p3pk/4pn2/P7/1Nb2K2/7P/1R6 w - - 0 42 >>> >>>But Zappa misplayed it, and came to the following study like position: >>> >>>[D]8/8/6R1/pKp5/Pb5k/8/8/8 w - - 0 53 >>> >>>Now Zappa was happy due to Black's offside king, but the question is whether or >>>not White can win here. The straightforward Rg6-c6xc5 fails by one tempo. The >>>question is whether or not white can win by moving the K to the Kingside, making >>>mating threats, and winning a pawn, while still not allowing the Black king to >>>escape. I personally believe it is a draw, but Pharaon blundered and Zappa was >>>able to win. Despite some errors, I think the game itself was one of the most >>>entertaining of the tournament. >>> >>>Game 7: Movei - Zappa (0 - 1) >>> >>>Another Sicilian. Movei blundered with axb4, and then Zappa sacrificed an >>>exchange with axb5: >>> >>>[D]r1b2rk1/2q2ppp/p2bp3/1N1n4/1n3PP1/1N1BBQ2/1PP4P/R4RK1 b - - 0 17 >>> >>>Zappa got a lot of pressure against movei's King, and the game was over quickly. >> >>I suspect that movei blundered later after axb4 and I am not sure if black is >>winning after axb4 > >9. a3 is just an ugly move. A waste of time. axb4 is just a positional blunder. You may be right I am not sure about it(as a player I do not play this opening not with white and not with black so I do not claim to understand it) I will try to build a tree to convince yace that the position after axb4 is clearly better for black(at least 0.3 pawn better) > > >> >>After some backward analysis >>I think that one mistake of Movei was to capture the exchange and trading >>knights by 17.Nxd5 instead of 17.Nb5 could be better inspite of the fact that >>zappa has a better position. > >Well, there were not only that. I saw several horrors. I agree that there were some more mistakes of movei. > > >> >>[D]r1b2rk1/2q2ppp/p2bp3/3n4/1n3PP1/1NNBBQ2/1PP4P/R4RK1 w - - 0 17 >> >>I think that the story of the game is more complicated then one blunder of movei >>and I guess that if you allow me enough take back and allow zappa no take back I >>may draw zappa even after axb4. >> > >Zappa outsearched Movei and complete a good game. It happens. This game was not >complicated for Zappa. Movei did not understand what was happening on the board. >It happens. > >Arturo. I agree About search I guess that maybe bad order of moves when the king is in check together with aggresive repeated check extension is part of the reason that movei was outsearched. In the beginning zappa did not outsearch movei by many plies but it seems that after the bad position happened zappa could search clearly deeper. Uri
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