Author: Uri Blass
Date: 06:47:33 09/13/02
Go up one level in this thread
On September 13, 2002 at 08:22:21, Slater Wold wrote: >On September 13, 2002 at 05:54:46, Gian-Carlo Pascutto wrote: > >>On September 12, 2002 at 21:47:50, Slater Wold wrote: >> >>>WITHOUT TABLEBASES: >>> 24-> 1.80 -0.14 1. ... Ke6 2. Kg4 Kf6 3. Kf3 Kf5 4. >>> g4+ Ke6 5. Ke3 Kd6 6. Kd2 Kc6 7. Kc3 >>> Kb5 8. Kb3 h6 9. Kc3 Ka4 10. Kc2 Kb4 >>> 11. Kd3 Kb3 <HT> >>> 25 2.16 ++ 1. ... Ke6!! >>> 25 2.58 -2.44 1. ... Ke6 2. Kg4 Kf6 3. Kf3 Kf5 4. >>> g4+ Ke6 5. Ke3 Kd6 6. Kd3 Kc6 7. Kc3 >>> Kb5 8. Kb3 h6 9. Kc3 Ka4 10. Kc2 Kb4 >>> 11. Kd3 Kb3 12. Ke3 Kc3 13. Ke2 Kxd4 >>> 14. Kf3 >>>WITH TABLEBASES: >>> 24-> 12.31 -0.14 1. ... Ke6 2. Kg4 Kf6 3. Kf3 Kf5 4. >>> g4+ Ke6 5. Ke3 Kd6 6. Kd2 Kc6 7. Kc3 >>> Kb5 8. Kb3 h6 9. Kc3 Ka4 10. Kd2 Kb4 >>> 11. Kd3 Kb3 <HT> >>> 25 13.57 ++ 1. ... Ke6!! >>> 25 14.39 -2.28 1. ... Ke6 2. Kg4 Kf6 3. Kf3 Kf5 4. >>> g4+ Ke6 5. Ke3 Kd6 6. h6 Kc6 7. Kd3 >>> Kb5 8. Kc3 Ka4 9. Kd2 Kb3 10. Kd3 Kb4 >>> 11. Kd2 Kc4 12. Ke3 Kc3 13. Kf2 Kxd4 >>> 14. Kf3 >> >>Tablebases hurt :) >> >>-- >>GCP > >I think most engines nowadays don't need TBs. 1 year ago, this wasn't the case. > (The Tiger game comes to mind, where it could mate with B+N.) I do not think that most programmers implemented special knowledge about tablebase position in the last year. Movei clearly missed points in the 3th division because of not having tablebases and not having knowledge about endgames. There are cases when I have doubts but I suspect that tablebases could help Here are part of the positions when movei blundered in the endgame missed 2 draws against betsy(tablebases could prevent the second). [D]8/6p1/4p3/1kn2rp1/1BR5/8/4K1PP/8 w - - 0 50 am Rxc5+ [D]8/8/5P2/3bn1P1/6R1/4k1K1/8/8 b - - 0 73 am Nxg4 A loss instead of win against cerebro(I do not think that tablebase could help but I am not sure) [D]8/8/Pb3k2/3B1p2/1P4p1/2K5/8/8 w - - 0 68 bm Kc4 am b5 Movei-fortress [D]8/P3R3/8/3p4/3kpK2/8/8/r7 w - - 0 62 am Kg4 Maybe Tablebases could save movei but i am not sure inspite of strongly believing that the position is a draw. Fortress-movei [D]8/8/8/1PK5/3Pbk2/8/8/8 b - - 0 127 am Bb7(tablebases could help) ledameblanche-movei [D]8/4R1P1/8/8/p7/4kp2/6r1/2K5 b - - 0 86 bm Kf2 Movei played Kd4 Rf7 Kc4 Rxf3 Rxg7 and got a tablebase draw. Movei-ssechess(clearly tablebases could help) [D]8/1p1k4/p7/P2K4/1PP5/8/8/8 w - - 0 63 bm c5 am b5 Movei-ant Mybe tablebases could help [D]2k5/R7/6pp/8/1K3PP1/p6r/8/8 w - - 0 61 am Rxa3 Uri
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