Author: Howard Exner
Date: 04:42:02 08/29/98
Go up one level in this thread
On August 29, 1998 at 06:45:59, blass uri wrote: > >On August 29, 1998 at 05:49:49, Howard Exner wrote: > >>On August 28, 1998 at 06:43:21, Vincent Lejeune wrote: >> >>>On August 28, 1998 at 01:32:23, Howard Exner wrote: >>> >>>>Could someone please post the pgn for game 2. >>>>Thanks. >>> >>>That's what I got from icc... >>>Junior resign ... >>> >>>[Event "ICS Rated standard match"] >>>[Site "chessclub.com"] >>>[Date "1998.08.28"] >>>[Round "-"] >>>[White "*Yudasin"] >>>[Black "*Junior"] >>>[Result "*"] >>>[WhiteElo "0"] >>>[BlackElo "0"] >>>[TimeControl "7200"] >>> >>>1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O Nge7 5. Re1 a6 6. Bxc6 Nxc6 7. Nc3 Qc7 >>>8. d4 cxd4 9. Nxd4 Bd6 10. Nxc6 bxc6 11. Qh5 Be5 12. Re3 Rb8 13. b3 g6 14. >>>Qh4 d6 15. Rf3 Qa5 16. Bd2 Qa3 17. Rb1 h6 18. Rd3 a5 19. Qg4 h5 20. Qg5 h4 >>>21. h3 Ba6 22. Rf3 Rh5 23. Qe3 Rb7 24. Qe1 d5 25. Bf4 Bh8 >> >>25. Bf4 sets up a nice trap for computer programs. How many programs want to >>play from this juncture. 25. ... Bxf4 26. Rxf4 d4 27. Na4 Qxa2? 28. Qc1! >>and the black queen is trapped. Perhaps Junior5 saw this line at the last >>minute and then played Bh8 with little time remaining for its move. >> >>Do any programs want to play this line only to reject it later due to the >>trapped Queen on a2? > >I gave Junior5(16 bit pentium200MMX) the position and it wanted to play >25...Bxf4 before it found 25...Bh8 after a long time(more than 20 minutes). >After more than 5 hours I found that it wanted again to play 25...Bxf4 >expecting 26.Rxf4 d4 27.Na4...(I do not remember what after it) with a small >advantage for white(I think 0.11 pawn but I am not sure). The sequence 25. ... Bxf4 26. Rxf4 d4 27. Na4 is ok as long as black now avoids 27. ... Qxa2. From this point in the game this is a nice test position. Here is the epd for move 27 4k3/1r3p2/b1p1p1p1/p6r/N2pPR1p/qP5P/P1P2PP1/1R2Q1K1 b - - am Qxa2; Here Rebel 8(AMD K6-233) on ply 10 has an eval of -0.70 for Qxa2 at the time 1:33. Rebel 8 finally avoids Qxa2 at 2:08 switching to Bb5 (-0.46) then again switching to the better Qd6 (eval of -0.01) at 3:48.
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