Author: Sarah Bird
Date: 06:02:26 07/02/99
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On July 02, 1999 at 02:00:11, Steve Lopez wrote: >On July 01, 1999 at 22:53:19, Melvin S. Schwartz wrote: > > >>The move order for the Bishop's opening is: >> >>1.e4...e5 2.Bc4...Nf6 3.Nf3...Nxe4 4.Nc3...Nxc3 5.dxc3...f6 (yes f6). >>6.Nh4...g6 7.f4...c6 8.f5...d5 9.fxg6 >> >>Okay, Steve, any comments? >> >>Mel > >The original post had 9.f6, which is clearly illegal. > >The line through 8...d5 *is* in Hiarcs' opening book. > >I didn't create the opening book, so take my response with a *pillar* of salt. >Historically, there are three games I found in which the line through 8.f5 was >played. Statistically, Black scores 67% in this line (two wins, one loss). > >However, the line was probably put in the book so that Hiarcs knows what to play >as *Black* in this line. According to the book probabilities, Hiarcs has equal >chances of playing 3.Nf3 or 3.d4 as White. The d4 gambit line should probably >have been weighted a bit higher than the alternative. In the 3.Nf3 line we're >discussing, 6.0-0 would have been better than 6.Nh4 (statistically speaking). > >I've not yet seen any chess program in which the opening book didn't have a few >"holes" (in fact, I once covered this in T-Notes last fall); we usually hear >about them pretty quickly after a program's release. This would appear to be one >such case. My guess is that the person who created the book was more concerned >about what Hiarcs should play as Black that he forgot to cover White in this >line. > >Remember, though, that this *is* just a surmise on my part. > >Your Sicilian line was address in another thread (it's down toward the bottom of >the page -- something about Fritz in 60' games). > >-- Steve Lopez An interesting line, clearly bad for white. To myself all whites moves after 3.Nf3 seem suspect. In my Hiarcs book it already has 4. Nc3 as -9 and 4. d4 probability as 100% this naturally with learning enabled. Sarah.
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