Author: Mark Young
Date: 20:52:09 09/17/98
Go up one level in this thread
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.
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.