Author: Robert Hyatt
Date: 16:13:05 11/24/98
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On November 24, 1998 at 18:19:02, Amir Ban wrote: >On November 24, 1998 at 14:16:16, Ernst A. Heinz wrote: > > >>"DarkThought" finished iteration #21 after 210 hours of computation and I >>finally had to stop it there. Qb6 remained the best move and the PV took about >>156 hours and exactly 120,180,459,947 nodes to resolve (3x more than the PV of >>the previous iteration). The expected best reply switched back to Rd8 and the >>score sank to a new low of +1.13. >> >>21.01 Qb6 Rd8 Be4 a5 axb5 axb4 Rxa8 Rxa8 Ra6 Rd8 ... (1.13) #120180459947 >> >>=Ernst= > > >Hey ! You are back on the "drawing" line and you have a novelty ! > >Dark Thought now wants to decline the bishop sacrifice and play Ra6 (rather than >Rxa8 Qxa8 Qxd6 Qa1+ etc.). We completely overlooked this possibility when we >analyzed this line last year. It seems to hang on to a +1 or so advantage, with >reasonable winning chances, I think. > >In view of this, I need to change the conclusion of the analysis, which was that >36.Qb6 Rd8 draws. > >Great effort, Ernst. > >Amir I'll wait on Bruce to comment as he may have saved this analysis... But I believe that this was one of several "defenses" we analyzed on ICC and chess.net last year. And while I don't remember the specifics, I do remember that we still ended at draw... And I notice his eval slipped again... As I said, "rumor" has it that axb5 and Qb6 lead to the same position... we'll see...
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