Author: Willis Gooch
Date: 15:24:30 09/18/98
Go up one level in this thread
On September 17, 1998 at 23:52:09, Mark Young wrote: >On September 17, 1998 at 06:12:56, Dirk Frickenschmidt wrote: > >>Here's one of the test positions where I was surprised about Junior5's tactical >>strength. >> >>Fritz5 blundered this position standing well but accepting an exchange sacrifice >>leading to a black mate attack. And Fritz normally does *very* well in finding >>mate threats. Other programs like Mchess 7.1 and Rebel9 also have problems with >>this positions, as is mentioned below. I guess this could count for most >>programs - with the possible exception of de Konings programs guessed again, >>perhaps also some Kittinger prg - , so please test and show me I was wrong... >>;-) >> >>Junior5 had the best time of soving this problem by far from the four programs I >>tested so far. >> >>Fritz5 - Golubev,M [E98] >>Sparkassen open rapid bad tactical move >>[DF] >> >>1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 e5 7.0-0 Nc6 8.d5 Ne7 9.Ne1 >>c5 10.dxc6 bxc6 11.b4 d5 12.Bg5 d4 13.Bxf6 Bxf6 14.Na4 Bg7 15.Nc5 h5 16.f4 exf4 >>17.Ned3 h4 18.Rxf4 a5 19.b5 cxb5 20.cxb5 a4 21.Rb1 Bh6 22.Rf1 Be3+ 23.Kh1 f5 >>24.Bf3 fxe4 25.Bxe4 Nf5 26.Bxa8?? [This is the Fritz5 blunder losing the game. >>Mchess 7.1 sees problems in ply 8 after about 5' and begins dropping from +5.02 >>down to +2.10, considering g4 as alternative and finally switching to ot after >>about 15'. Rebel9 smells "something" after 1'17, dropping from +6.23 to 4.09 in >>ply 9, but needs ply 11 and about 20' to evaluate even less with +0.63, still >>not finding another move within 30'.} [But Junior5 sees the mess already after >>1'51 on 200MMX-32Mb Hash and switches to 26.g4 with a white winning position] >>26...Ng3+ 27.hxg3 hxg3 28.Rxf8+ Qxf8 29.Bd5+ Kh8 30.Qh5+ 0-1 >> >>Kind regards >>from Dirk >> > >Junior 4.6 also did well on this position. Finding the trouble with Bxa8 and >playing 26.b6(which also looks winning to me) in well under 2 min. on my >computer. >It took Fritz 5 more then 4 min to play the same move On a P166, with 32M hash, genius 5 DOS version finds (switches to) 26. g4 line in about 7'30''. Willis
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.