Author: Ernst A. Heinz
Date: 16:20:40 05/17/00
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Hi Bob, >I think playing Bxa7 very quickly is a bug. Because you are right, trapping >the bishop is easy, and breaking the trap is deep. For every game you win by >playing Bxa7 you will lose 10. Calling this a "bug" is a bold conjecture IMO -- your observations above might be true for blitz games but they certainly do not hold for longer time controls according to my experience. I prefer the approach of adding as little evaluation code for special situations as possible. The "trapped Bishop" should certainly get punished for losing most of its mobility. And the potential necessity to defend the piece will punish its side further. So why do we need special code for this? Moreover, the alleged "trap" often turns out to be a "fata morgana" of human players who fear it without any good reason. Hence, you may rob your program of many potential chances if you severly punish "trapped Bishops" statically. =Ernst=
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