Author: Uri Blass
Date: 19:13:45 08/21/01
Go up one level in this thread
On August 21, 2001 at 17:25:34, Peter Berger wrote: >On August 21, 2001 at 13:52:01, Dieter Buerssner wrote: > >I tried your positions with the program "Der Bringer" ( >http://www.reubold.onlinehome.de) by Gerrit Reubold on an Athlon 1333 computer. > >>Two mates from an actual game postition with equal material on the board. >>The first one may not be difficult to find for playing programs. It is a >>mate in 9 or better. >> >> r2q1r1k/1pbbn2B/p1n1p1p1/3p2NQ/1P1p1P2/P1P1B3/6PP/R4RK1 w - - 0 18 > >This one is very easy as you expected. > >0:00:05.2 ( 9/28) 1294302 8.69 h7xg6 (Mat=-235,50=0) >0:00:11.4 ( 9/36) 2801304 Matt in 9 h7xg6 h8-g7 h5-h7 g7-f6 g2-g4 > >> >>The second one is mate in 19 or better. This positions occured 2 moves >>earlier in the game. >> >>[D] r2q1rk1/1pbbn1pp/p1n1p3/3p2N1/1P1p1P2/P1PBB3/6PP/R2Q1RK1 w - - 0 16 >> >>Yace cannot find this mate, without help by first analysing some lines. > >This is called cheating Dieter, isn't it ;-)) ? > >OK - without any tricks :) : > >0:14:03.6 (13/42) 222073875 18.88 d3xh7 g8-h8 d1-h5 f8-f6 >(Mat=-335,50=3) >0:17:04.9 (14/42) 268965501 19.28 d3xh7 (Mat=-335,50=0) >0:32:29.9 (14/46) 517708825 19.68 d3xh7 (Mat=-335,50=0) >1:17:51.5 (14/46) 1269029346 20.42 d3xh7 g8-h8 d1-h5 g7-g6 >(Mat=-335,50=0) > >Not solved - I somehow expect this should be solveable in less than 10 hours for >Bringer at ply 15 but this remains to be tested ( hardware advances are a thrill >btw - a nice potential bug : what will Bringer do after about 11 hours when the >internal node counter in the GUI can't display the positions searched anymore ?! >) . > > >>With French Winawer, I have seen quite a few short computer chess games, >>also often, losses by Yace. But I have also seen fast wins for Black. >>Chester expected 15. fxe5. I think, 15. Ng5 is already winning, but Yace could >>not see it yet in the game. Actually, the two moves were rather close in score, >>which also shows, that there can be quite some luck involved. >> >>Regards, >>Dieter > >You won't see the real problem with the Winawer against computers. > >The Winawer might or might not be a good opening against other silicon GMs - >this is probably mainly a book tuning issue or luck . I think if you avoid the >positions with the penetrating queen on g7,h7 this should be very playable >against computers. > >Problem is : all of them don't understand the positions resulting from the main >variations well. There are a lot of chess programs I think it is better not to say all of them because there may be one that understands it. Uri
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