Author: Uri Blass
Date: 12:19:45 03/07/02
Go up one level in this thread
On March 07, 2002 at 14:41:06, Albert Silver wrote: >On March 07, 2002 at 00:36:23, Slater Wold wrote: > >>Ok, let's take a look: >> >>[D]2b1qrk1/5p1p/pBn3p1/1p2p3/4P2N/bBP1Q3/P4PPP/3R2K1 w - - >> >>Best move? It's supposed to be Nxg6. But is it? >> >>After 598 minutes, Crafty thought this line was best: >> >>1. Nf3 Bg4 2. Bd5 Nb8 3. c4 Qe7 4. cxb5 axb5 5. h3 Bxf3 6. Qxf3 Bc5 7. Bxc5 Qxc5 >>8. Rb1 b4 9. Qe3 Qxe3 10. fxe3 Kg7 11. Rxb4 Rd8 >> >>Giving it a score of 0.93 and searching somewhere around 55B+ nodes. > >Like I said, the only way for ANY line to be considered better than Nxg6 is if >it is better than Rebel's line Nxg6 hxg6 Qh6 Be6 Rd3 Bc1. As you showed, Crafty >thinks the resulting position after Bc1 is lost for Black. > > 16-> 8:29 1.84 4. Qxc1 Bxb3 5. axb3 Qe6 6. Qd1 Rb8 > 7. Rd6 Qe8 8. Bc5 Rd8 9. Rd5 Kg7 10. > b4 f6 11. Bd6 Ne7 12. Rd3 > >I have no doubts, but there will still be the matter of converting the win, so >it remains Black's best defense. As to Nxg6 hxg6 Qh6 Be6 Rd3 f5? it loses >forcibly and I think my last line given in response to Ed was enough. I'm pretty >sure that after the last move Rebel's eval went through the roof in White's >favor. Note that Crafty never considers the superior Rg3! Rf6 Rh3 and goes >straight for Rh3. > > 14-> 9:28 0.80 3. ... f5 4. Rh3 Kf7 5. Qh7+ Kf6 6. > Qh4+ Kg7 7. Bxe6 Qxe6 8. exf5 Qg8 9. > Qh6+ Kf7 10. fxg6+ Ke7 11. Qg5+ Ke6 > 12. Qg4+ Ke7 13. Rd3 Rf6 14. Rd7+ Kf8 > >It's no criticism of Crafty as the lines are very complicated and very deep, but >then again, that was the whole reason I posted finding all this as a challenge. >If they could all see it in a minute, it would be much of a challenge, would it. >:-) > > 14-> 9:28 0.80 3. ... f5 4. Rh3 Kf7 5. Qh7+ Kf6 6. > Qh4+ Kg7 7. Bxe6 Qxe6 8. exf5 Qg8 9. > Qh6+ Kf7 10. fxg6+ Ke7 11. Qg5+ Ke6 > 12. Qg4+ Ke7 13. Rd3 Rf6 14. Rd7+ Kf8 > >I'll reiterate one main line after 3...f5: > >1. Nxg6 hxg6 2. Qh6 Be6 3. Rd3 f5 4. Rg3 Rf6 5. Rh3 Kf7 6. Qh7+ Kf8 7. exf5 Bxb3 I think that Bxb3 is a wrong move in that line and 7...Rxf5 can prolong the struggle. The question is if the defence 7...Rxf5 is better than the defence 3...Bc1 Uri
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