Author: Robert Hyatt
Date: 19:25:55 12/12/03
Go up one level in this thread
On December 12, 2003 at 17:10:10, Will Singleton wrote: >On December 12, 2003 at 16:53:34, Robert Hyatt wrote: > >>On December 12, 2003 at 16:32:36, Will Singleton wrote: >> >>>On December 12, 2003 at 16:21:38, Uri Blass wrote: >>> >>>>On December 12, 2003 at 15:13:40, Will Singleton wrote: >>>> >>>>>On December 12, 2003 at 13:49:35, Robert Hyatt wrote: >>>>> >>>>>>On December 12, 2003 at 13:40:07, Will Singleton wrote: >>>>>> >>>>>>>Here's a position from a recent game, this one gives Amateur fits. >>>>>>>How long to see black is busted? >>>>>>> >>>>>>>[d]4rr2/1b3p1k/pp5p/2b1pQ2/q7/P2R2B1/1PP3PP/2KR4 b - - >>>>>> >>>>>> >>>>>>For Crafty, the bottom begins to fall out at 6 seconds or so, where >>>>>>it begins to see it is not ahead. By 60 seconds it has failed low >>>>>>to white a pawn up and climbing: >>>>>> >>>>>> 12-> 4.84 -0.69 1. ... Kg8 2. Bxe5 Bf2 3. Rd4 Rxe5 >>>>>> 4. Qxe5 Re8 5. Rd8 Bc6 6. Rxe8+ Bxe8 >>>>>> 7. Rd6 Qb5 8. Qf4 Qg5 <HT> >>>>>> 13 6.66 -- 1. ... Kg8 >>>>>> 13 15.28 0.31 1. ... Kg8 2. Bxe5 Bf2 3. Bf6 Re2 4. >>>>>> Rd8 Bc5 5. R8d4 Rxc2+ 6. Qxc2 Qxc2+ >>>>>> 7. Kxc2 Bxd4 8. Bxd4 Be4+ 9. Kb3 Rd8 >>>>>> 13-> 17.91 0.31 1. ... Kg8 2. Bxe5 Bf2 3. Bf6 Re2 4. >>>>>> Rd8 Bc5 5. R8d4 Rxc2+ 6. Qxc2 Qxc2+ >>>>>> 7. Kxc2 Bxd4 8. Bxd4 Be4+ 9. Kb3 Rd8 >>>>>> 14 35.70 0.00 1. ... Kg8 2. Bxe5 Bf2 3. Bf6 Re2 4. >>>>>> Rd8 Bh4 5. Rxf8+ Kxf8 6. Rd8+ Re8 7. >>>>>> Rxe8+ Qxe8 8. Bxh4 Qe3+ 9. Kb1 Qg1+ >>>>>> 10. Ka2 Qxg2 11. Qf4 Qxc2 12. Qxh6+ >>>>>> 14-> 40.01 0.00 1. ... Kg8 2. Bxe5 Bf2 3. Bf6 Re2 4. >>>>>> Rd8 Bh4 5. Rxf8+ Kxf8 6. Rd8+ Re8 7. >>>>>> Rxe8+ Qxe8 8. Bxh4 Qe3+ 9. Kb1 Qg1+ >>>>>> 10. Ka2 Qxg2 11. Qf4 Qxc2 12. Qxh6+ >>>>>> 15 51.44 -- 1. ... Kg8 >>>>>> 15 1:30 0.98 1. ... Kg8 2. Bxe5 Bf2 3. Rd4 Rxe5 >>>>>> 4. Qxe5 Re8 5. Rg4+ Qxg4 6. Qxe8+ Kg7 >>>>>> 7. Qe5+ f6 8. Qc7+ Kg6 9. Rd7 Qg5+ >>>>>> 10. Kb1 Bxg2 11. Rg7+ Kf5 12. Rxg5+ >>>>>> hxg5 >>>>> >>>>>That's only half the story. Let it think another half hour. >>>>> >>>>>Will >>>> >>>>Do you mean to bigger score against black or to the fact that 1...Kh8 is also >>>>bad for black because of b4 for example f6 Bh4 Be7 Qg6 Be4 Qxe4 or Bxb4 Bxe5+ >>>>Rxe5 Qxe5+ f6 Qe3? >>>> >>>>Uri >>> >>>Right, it takes a bit longer to see that black is also bad after Kh8, because of >>>b4 etc... the scores should be about equivalent for Kg8 and Kh8. >>> >>>Will >> >>It had already passed on Kh8 when I stopped it (actually when the machine >>was shut down for processor upgrade). > >Well, I'd be interested to see your result on the quad. Crafty here eventually >selects Kh8 b4, but the score isn't as convincing. > >Will That was on the quad... I'll try to run it longer if I can. I was going to run the above longer but the machine was shut down in the middle of the run, or it crashed. They had upgraded and were probably fiddling with bios settings and found one that was unstable maybe...
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