Author: Arturo Ochoa
Date: 15:59:30 02/14/05
Go up one level in this thread
On February 14, 2005 at 16:21:33, Uri Blass wrote: >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 It happens, Uri. It was just a bad game. The last Zappa game was not a good book election. It happens. We must accept when we win and when we loose, when we do everything ok and when we go wrong. Arturo.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.