Author: Miguel A. Ballicora
Date: 16:27:41 09/30/01
Go up one level in this thread
On September 30, 2001 at 11:12:47, Uri Blass wrote: >On September 30, 2001 at 10:39:50, Miguel A. Ballicora wrote: > >>On September 30, 2001 at 06:15:44, José Carlos wrote: >> >>>On September 29, 2001 at 20:15:16, Gareth McCaughan wrote: >>> >>>>José Carlos wrote: >>>> >>>>> The point is not the move, but the eval. The program must >>>>> know white is winning: >>>>> >>>>> [D]R4rk1/5pp1/5q1p/1p1Qp3/8/1B6/1PP2bPP/5K2 w - - 0 1 >>>>> >>>>> Qxf7+ and after the changes, the pawn ending is won. >>>> >>>>Crafty 18.11, Athlon 1GHz, has +0.8 after 0.4 seconds (8 ply), >>>>rising to 0.93 after 11 seconds, 1.17 after 28 seconds, 1.36 >>>>after 6 minutes. It plays Qxf7+ at all depths. >>>> >>>>-- >>>>g >>> >>> It doesn't surprise me at all. Crafty is probably the best in the world >>>evaluatiing pawn endgames. >>> >>> José C. >> >>Anyway, the position "as is" is not perfect for a test because white will want >>to play Qxf7 even if doesn't understand the upcoming pawn endgame (because Qxf7 >>just win a pawn). > >No > >Junior7 prefers to force a draw by perpetual check and >cannot find Qxf7. Ok, let me rephrase it. "...is not perfect for a test because white MIGHT want to play Qxf7 even if doesn't understand..." >If a program believes that black is better in the pawn endgame >then it is not going to find Qxf7. Yes, that's the case of my program! :-( [snip] >I remember that I told Amir Ban some years ago about >pawn endgames problems and he told me that it is not important >because Junior almost never does not get pawn endgames >so it is more important for him to work about other problems >in the evaluation. Understandable, but it is a problem driven by the market. People wants to buy programs that perform better against other programs or are succesful in W.Ch. However, most of them will use them to analyze their own games! So, Junior might not play any pawn endgame but their users will! Nobody seems to care, so programmers won't either, they use the programming time as wisely as possible. Regards, Miguel
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