Author: Dave Gomboc
Date: 05:35:36 09/24/98
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On September 24, 1998 at 03:07:41, Dirk Frickenschmidt wrote: >Hi all of you, > >finally I can return to playing tournament testgames (on two 200MMX machinces >with 64Mb each). > >Although Junior's first game against Fritz5 became a draw, it was a long >positional and tactical struggle. > >In this Meran variation of the Semi-Slav black has the pair of bishops and >considerable pressure on the white queenside, while having to handle pawn >weaknesses around its king with active play, thus preventing a direct white >attack against the black king. Nvertheless white has to try to exploit the black >weaknesses, while defending the queenside as long as possible not to suffer from >a bad endgame. > >The black variation is 9... c5 is a typical choice by GM Sveshnikov, who has >been using it successfully since 1977 and scored only wins and draws while using >it for black. > >Both programs managed to balance attack and defence jobs very well, and white >was gaining some positional advantage during the middlegame. But after the black >35....Rxg3 (a move both programs "understood") Junior5 got king weaknesses >itself and was not able to gain a decisive advantage in the end. This was a very interesting game to me. When I played over it without a computer crunching on the positions, I thought Black's position was better from around 21...c4 through the 35...Rxg3 period. I went back to read your message a second time, thinking that I had misread your comments the first time around. But no, you said that White had been gaining some positional advantage. I then booted up crafty, and it thinks that White's position is pretty good after 21...c4 (we're talking almost a pawn plus). Are there any programs that agree with me? Should they? Maybe I am just completely misevaluating the position? I thought that the space advantage was worth a lot, White's rooks were passive, and while Black's kingside weakness would probably prevent a win, Black still had all the play. Probably that last bit is overly brash, but I am having a hard time believing that White's position is actually better! Dave Gomboc >Junior5 - Fritz5 [D47] >[DF] > 44160kB, jun-book.ctg=351287 pos > 1.Nf3 d5 2.d4 c6 3.c4 e6 4.Nc3 Nf6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 b4 >9.Ne4 c5 10.Nxf6+ gxf6 11.Be4 Rb8 12.0-0 f5 13.Bc6 Qc7 14.d5 Bg7 15.e4 fxe4 >16.Ng5 0-0 aus dem Buch 17.Bxd7 Bxd7 18.Qh5 h6 19.dxe6 hxg5 20.exd7 Qxd7 21.Qxg5 >c4 22.a3 Rb5 23.Qg3 bxa3 24.Rxa3 f5 25.Ra6 Rb3 26.Qg6 Qf7 27.Qg5 Rb6 28.Ra5 f4 >29.h4 f3 30.g3 Rg6 31.Qd2 Bf6 32.Re1 Bd8 33.Re5 e3 34.R1xe3 Bb6 35.R3e4 Rxg3+ >36.Kf1 Rg2 37.Rg5+ Kh8 38.Qc3+ Kh7 39.Be3 Bxe3 40.Qxe3 Rd8 41.Ke1 Rd3 42.Qc5 >Rxg5 43.Qxg5 Rd7 44.Re5 Qg6 45.Re7+ Rxe7+ 46.Qxe7+ Kg8 47.Qd8+ Kh7 48.Qd4 a5 >49.Kd2 Qh6+ 50.Kc2 Qe6 51.Kc3 Qe2 52.Qd7+ Kh6 53.Qd6+ Kg7 54.Qd2 Kg6 55.Qg5+ Kf7 >56.Qf5+ Kg7 57.Qg4+ Kf6 58.Qd4+ Kg6 59.Qb6+ Kf7 60.Qc7+ Kg6 61.Qg3+ Kf7 62.Kd4 >Qxb2+ 63.Kxc4 Qb4+ 64.Kd5 Qb5+ 65.Kd4 Qb6+ 66.Kc3 Qc6+ 67.Kb3 Qd5+ 68.Ka4 Kf6 >69.Qf4+ Kg6 70.Qg4+ Kh6 71.h5 Qxh5 72.Qe4 Qh1 73.Qe3+ Kh5 74.Qe8+ Kg4 75.Qd7+ >Kg5 76.Qd8+ Kf4 77.Qd4+ Kf5 78.Kxa5 Qc1 79.Kb6 Qa3 80.Qc5+ Qxc5+ 81.Kxc5 ½-½ > >Kind regards >from Dirk
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