Author: Howard Exner
Date: 23:33:32 07/01/99
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On July 02, 1999 at 00:15:12, Laurence Chen wrote: >This position occurred in a game between Chessmaster 6000 and Hiarcs 7.32, game >in 15 minutes. Chessmaster lost in time, however, because the engine never >resigns, I decided to continue playing and to my surprise Hiarcs 7.32 fell into >a swindle. It played a terrible move which allowed Chessmaster to get away with >perpetual check. Fortunately for Hiarcs 7.32, it won on time, but it bothers me >that Hiarcs 7.32 has some tactical bugs which needs to be fixed. I hope that >Mark Uniacke is reading this, and perhaps he can post a fix to this engine bug. >Below is the position: >8/r7/6Rp/Q1pk3P/2q2p2/2P5/8/KB6 w - - 0 1 >Hiarcs played 1. Qxa7??? which allows Chessmaster 6000 to force a perpetual >check with 1. Qxc3+. Both Rebel 10c and CM6000 stick with Qxa7 also after 7 minutes on an Amd K6-233. This looks like a tough one for computers. >Fritz 5.32 finds an elegant solution, 1. Qa2 forcing an >exchange and winning easily. Qa2 also draws if black responds with Ke5. Check this out to confirm as it looks like white must follow up with Qxa7. >Laurence
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