Author: Jeremiah Penery
Date: 14:52:41 11/24/98
Go up one level in this thread
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=
Mine was searching ply 21 when I did something wrong and the analysis stopped.
After ply 20 the score was still around +1.6 [The PV is floating around here
somewhere.] Now, I decided to run tests on 36. Qb6/axb5 axb5 at the same time.
I increased Crafty's king-safety values (about 2x, I believe) to see if it'd get
me any closer, since that is presumably (at least part of) the reason DB played
axb5.
Currently, the one searching 36. axb5 axb5 has:
-----------------------------------------------------------
15-> 52:06 0.34 37. Qb6 Rxa2 38. Rxa2 Ra8 39. Ra5 Rxa5
40. bxa5 Qb8 41. Qxb8+ Bxb8 42. Be4
Kf7 43. Kf1 Ke7 44. Ke2 Kd6 45. a6
Ba7 46. g3
-----------------------------------------------------------
The one searching 36. Qb6 has:
-----------------------------------------------------------
14-> 52:10 -1.48 36. ... Bc7 37. Qe6+ Qxe6 38. fxe6
Rab8 39. Bf5 a5 40. bxa5 Bxa5 41. d6
g6 42. Bxg6 Bxc3 43. d7 Rd8 44. e7
Rxd7 45. e8=Q+ Rxe8 46. Bxe8 Bxa1 47.
Bxd7
-----------------------------------------------------------
Unfortunately, each one is only getting half CPU time since they're running on
the same machine, but I intend to let them run for several days.
Jeremiah
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