Author: jonathan Baxter
Date: 21:55:04 09/02/98
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On September 02, 1998 at 16:21:15, Bruce Moreland wrote: > >On September 01, 1998 at 15:57:49, Djordje Vidanovic wrote: > >>Bernhard Bauer claims that this kind of position NEVER occurs in real games... >>But it does -- therefore I AM taking his claim *cum grano salis* :-) >>Anyway, here goes: >> >>>[FEN "8/8/8/5pp1/8/1K6/2pp1Q2/2k5 w - - 0 1"] >>>[PlyCount "5"] >>>[EventDate "1907.??.??"] >> >>1. Qe3 f4 2. Qf2 d1=Q (2... f3 3. Qe3) 3. Kc3 f3 4. Qe3+ Kb1 5. Qb6+ Kc1 6. Qb2# >>1-0 >> >>This is a relatively simple position where white wins in 12 plies or less, but >>several programs fail to find Qe3, even after a search deeper than 12 plies. >> >>After at least 5 minutes on a PII-400 with 256 MB RAM, Hiarcs 6, Fritz 5, Mchess >>7.1, Nimzo 98, Crafty 15.17, Exchess 2.34 and Junior 4.6 don?t find the >>solution. Junior plays instantaneously Kc3?? and announces mate in 4, >>overlooking the obvious underpromotion d1N+. KnightCap also plays Kc3 instantly. But then it can only promote to a queen. Thus It seems junior has the same "feature". BTW, on ICC I have seem KnightCap lose two games because it didn't know about under promotion. Jon
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