Author: Uri Blass
Date: 10:10:25 09/09/01
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On September 09, 2001 at 12:26:35, Torstein Hall wrote: >After the following moves we reach this position: > > >Kasparov,G (2851) - Shirov,A (2751) [C11] >Fujitsu-Siemens Giants Frankfurt GER (3), 23.06.2000 >[Fritz 6 (180s)] > >C11: French: Classical System: 4 e5 and 4 Bg5 dxe4 > 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Nbd7 6.Nf3 Be7 7.Nxf6+ Bxf6 8.h4 >0-0 9.Bd3 c5 10.Qe2 cxd4 11.Qe4 g6 12.0-0-0 Qa5 13.Bxf6 Nxf6 14.Qxd4 Nh5 15.a3 >Rd8 16.Qe3 Bd7 17.g4 Nf6 18.Qf4 Nd5 19.Qh6 Nf6 20.Ng5 Bc6 21.Bxg6 hxg6 22.Nxe6 >fxe6 23.Qxg6+ Kh8 24.Qxf6+ Kh7 25.Rhe1 Rxd1+ 26.Rxd1 Qc5 27.g5+- Rf8 28.Qh6+ Kg8 >29.Qxe6+ Kg7 30.Qh6+ Kg8 31.Qg6+ Kh8 32.Qh6+ Kg8 > >[D]5rk1/pp6/2b4Q/2q3P1/7P/P7/1PP2P2/2KR4 w - - 0 33 > >When Fritz has the gamescore it wants to play 33.Rd6 whish probably wins, but >takes a lot longer. If the game score is not given to Fritz it want to play >33.Qe6+ like Kasparov did. This must be a repetition bug?! No This is no bug Fritz was designed to play games and not to analyze them. In a game Fritz is not going to miss 30.Rd6 so this problem is not relavent. note that I know about a repetition bug of Fritz6 and Fritz6a drew a correspondence game with Steve Ham because of a repetition bug. Fritz evaluated itself as better but let Steve Ham to get a draw by repetition because of the bug. I do not know if Fritz could win without the bug because it had no plan but the bug helped Steve Ham to get an easy draw. Uri
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