Author: Vincent Diepeveen
Date: 21:43:12 01/26/02
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On January 26, 2002 at 20:01:22, Vine Smith wrote: >On January 26, 2002 at 08:43:41, K. Burcham wrote: > >> >> >>could you please explain 15/89 >> is this the same as todays programs. is the 15 a depth value? >>is the 89 also a depth value, but for selected extensions that are searched >>deeper? >> >>what is the :24 24 minutes 24 seconds >> >>dont think it is depth 15 with the 89 meaning 89 minutes. >> >> >>another question. look at line 11 under move 25. [TIMEOUT] >>wonder what the time control was set to. where they letting >>the deep blue operators force a move, could they do a "move now"? >>"timeout" referring to what, does this mean deep blue has decided >>to move and stop thinking for a better eval in this position? >> >>another question. what are the ( ) values. example (43). >> >> >>--------------------------------------- >>--> 25. Rca1 <-- 15/89:24 >>--------------------------------------- >>hash guess Qc7d8,Guessing Qd8 >> 8(4) #[f4](30)[f4](30) 30^ T=0 >>pf2f4 Pe5f4p be3f4P Nh7f6 qe2f2 Pa6a5 pb4a5P >> 8(6) #[f4](43)######################################### 43 T=2 >>pf2f4 Pe5f4p be3f4P Nh7f6 qe2f2 Pa6a5 pb4a5P >> 9(6) #[f4](43)##<ch> 'qd8' >>[221 sec (main.c:1847)][cont]####################################### 43 T=33 >>pf2f4 Pe5f4p be3f4P Nh7f6 qe2f2 Pa6a5 pb4a5P >>10(6) #[f4](41)##################[Kh2](42)#######[Bd1](45)############### 45 >>T=119 >>bc2d1 Nh7f6 qe2a2 Ra8b8 pa4b5P Pa6b5p bd1f3 Pg7g6 >>11(6) #[Bd1](43)#[f4](46)[TIMEOUT] 46 T=234 >>pf2f4 Pe5f4p be3f4P Rc8b8 bf4e3 Bf8e7 pa4b5P Pa6b5p be3a7 Rb8b7 >>--------------------------------------- >>--> 26. f4 <-- 14/85:39 >>--------------------------------------- >>hash guess Pe5f4p,Guessing exf4 >> 8(4) #[Bxf4](30)[Bxf4](30) 30^ T=1 >>be3f4P Rc8b8 bf4e3 Bf8e7 pa4b5P Pa6b5p be3a7 Rb8b7 >> 8(6) #[Bxf4](41)######################################### 41 T=3 >>be3f4P Rc8b8 bf4e3 Bf8e7 pa4b5P Pa6b5p be3a7 Rb8b7 >> 9(6) #[Bxf4](45)######################################### 45 T=17 >>be3f4P Rc8b8 bf4e3 Bf8e7 pa4b5P Pa6b5p be3a7 Rb8b7 >>10(6) #[Bxf4](39)######################################### 39 T=68 >>be3f4P Nh7f6 bf4e3 Pa6a5 be3d4 Pa5b4p pc3b4P Pb5a4p bc2a4P Bf8e7 >>11(6) #[Bxf4](39)##<ch> 'nf6' >>--------------------------------------- >>thanks >>kburcham > >The 15/89:24 is fairly simple -- 15 moves left until next time control, likewise >89 minutes, 24 seconds left until next time control. The [TIMEOUT] is, I >believe, an internal process of the program, and not the result of operator >intervention; I have not read any accounts of Deep Blue operators forcing moves >in the manner you suggest. >The depth of the search can be determined by adding the two numbers at the >beginning of the last line of each move's log, so at move 25, Deep Blue looked >17 plies ahead (11+6). I think the first value, 11, is brute force search, and >the second value, 6, is a selective search extension of some sort. 11(6) means 11 ply depth. it is theoretical impossible to search with so little nodes a second 17 ply fullwidth without hashtables and without pruning, and we know that they didn't forward prune, also many comparisions from Uri Blass have revealed that Crafty tactical (not exactly a tactical hero) at 15 ply sees more than Deep Blue at 17 ply and diep at the same depth (because it is using singular extensions) usually sees the same things or more. Best regards, Vincent >Regards, >Vine Smith
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