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Subject: Re: Pawn endgame (Shredder bundered)

Author: Chuck

Date: 17:51:08 11/01/05

Go up one level in this thread


Shredder 9 doesn't seem to do that bad, though it might not find this in most of
the blitz games that are played these days. Here's the analysis of Shredder 9
UCI in the Hiarcs 9 GUI with all 3-4-5 and some 6-piece tablebases on an Athlon
2400 (2000 MHz) with 64 MB hash. In the game, Shredder 9 appears to have only
used 19 seconds and there may be few, if any, engines that can solve this in
that time.

KingofJungle,S - DÝABLO,D, 16m + 0s, rated rapid 2005
8/6p1/3k3p/3p3P/pp3PP1/4P3/P1K5/8 w - - 0 1

Analysis by Shredder 9.1 UCI  UCI:

35.Kd3
  =  (-0.05)   Depth: 1/1   00:00:01
35.Kd3 Kc5
  =  (0.02)   Depth: 2/4   00:00:01
35.Kd3 Kc5 36.e4
  =  (0.10)   Depth: 3/5   00:00:01
35.Kd3 Kc5 36.e4 dxe4+ 37.Kxe4 Kc4
  =  (0.19)   Depth: 4/8   00:00:01
35.Kd3 Kc5 36.e4 dxe4+ 37.Kxe4 Kc4 38.Ke5
  =  (0.08)   Depth: 5/8   00:00:01
35.Kd3 Kc5
  =  (-0.23)   Depth: 6/10   00:00:01  1kN
35.Kd3 b3 36.axb3 a3 37.Kc2 Kc6
  ³  (-0.59)   Depth: 6/10   00:00:01  3kN
35.g5
  ³  (-0.55)   Depth: 6/11   00:00:01  4kN
35.g5
  =  (-0.20)   Depth: 6/11   00:00:01  4kN
35.g5 hxg5 36.fxg5 b3+ 37.axb3 a3 38.Kb1 Kc5
  ±  (0.94)   Depth: 6/11   00:00:01  6kN
35.g5 hxg5
  ²  (0.69)   Depth: 7/13   00:00:01  9kN
35.g5 hxg5
  =  (0.19)   Depth: 7/13   00:00:01  9kN
35.g5 Ke6 36.gxh6 gxh6 37.Kb2 Kf5 38.Kc2 Ke6 39.Kb2 Kf5 40.Kc2 Ke6
  =  (0.00)   Depth: 7/13   00:00:02  10kN
35.g5 Ke6
  =  (-0.25)   Depth: 8/13   00:00:02  13kN
35.g5 Ke6 36.gxh6 gxh6 37.Kc1 Kf5 38.Kd2 Kg4 39.f5
  ³  (-0.67)   Depth: 8/13   00:00:02  16kN
35.Kd2
  ³  (-0.66)   Depth: 8/14   00:00:02  23kN
35.Kd2 Kc6 36.g5 hxg5 37.fxg5 b3 38.h6 b2 39.hxg7 b1Q 40.g8Q
  ³  (-0.45)   Depth: 8/14   00:00:02  25kN
35.Kd2 Kc6 36.g5 hxg5 37.fxg5 b3 38.axb3 a3 39.Kc3 Kc5
  ³  (-0.48)   Depth: 9/15   00:00:02  33kN
35.Kc1
  ³  (-0.47)   Depth: 9/15   00:00:02  51kN
35.Kc1
  =  (-0.12)   Depth: 9/15   00:00:02  58kN
35.Kc1 Ke6
  =  (-0.12)   Depth: 9/16   00:00:02  70kN
35.Kc1 Ke6 36.Kd2 Ke7 37.Kc2 Kf7
  =  (-0.12)   Depth: 10/17   00:00:02  89kN
35.Kb2
  =  (-0.11)   Depth: 10/18   00:00:02  125kN
35.Kb2 Ke6 36.Kc1 Kf6
  =  (-0.10)   Depth: 10/18   00:00:02  136kN
35.Kb2 Kc5 36.g5 Kd6 37.gxh6 gxh6 38.Kc2 Ke6 39.Kd3 Kf5 40.Kd4 b3
  =  (-0.12)   Depth: 11/18   00:00:02  164kN
35.Kb2 Kc5 36.g5 Kd6 37.gxh6 gxh6 38.Kc2 Ke6 39.Kd3 Ke7
  =  (-0.12)   Depth: 12/20   00:00:02  259kN
35.Kd3
  =  (-0.11)   Depth: 12/29   00:00:02  331kN
35.Kd3 Ke6 36.Kc2 Kd7
  =  (-0.11)   Depth: 12/30   00:00:02  380kN
35.Kd3 Ke6 36.Kc2 Kd7 37.Kd3 Kd6 38.g5 hxg5 39.fxg5 b3 40.axb3
  =  (-0.10)   Depth: 13/30   00:00:02  512kN, tb=3
35.Kb2
  =  (-0.09)   Depth: 13/30   00:00:02  556kN, tb=8
35.Kb2 Ke6 36.Kb1
  =  (-0.09)   Depth: 13/30   00:00:02  589kN, tb=23
35.Kb2 Kc5 36.g5
  =  (-0.10)   Depth: 14/32   00:00:03  832kN, tb=105
35.Kd3
  =  (-0.09)   Depth: 14/33   00:00:03  873kN, tb=122
35.Kd3 Ke6 36.Kc2 Kf7 37.Kc1 Kf6 38.Kb2 Ke7
  =  (-0.09)   Depth: 14/33   00:00:03  926kN, tb=127
35.Kd3 Ke6 36.Kc2 Kf7 37.Kc1 Kf6 38.Kb2 Ke6 39.Kb1 Kf7 40.Kc2 Ke7
  =  (-0.09)   Depth: 15/36   00:00:05  1299kN, tb=275
35.Kd3 Ke6 36.Kc2 Kf7 37.Kc1 Kf6 38.Kb2 Ke6 39.Kb1 Kf7 40.Kc2 Ke7
  =  (-0.09)   Depth: 16/38   00:00:07  2044kN, tb=683
35.Kd3 Ke6 36.Kc2 Kf7 37.Kc1 Kf6 38.Kb2 Ke6 39.Kb1 Kf7 40.Kc2 Ke7
  =  (-0.09)   Depth: 17/39   00:00:09  3085kN, tb=765
35.Kd3 Ke6 36.Kc2 Kf7 37.Kc1 Kf6 38.Kb2 Ke6 39.Kb1 Kf7 40.Kc2 Ke7
  =  (-0.09)   Depth: 18/40   00:00:13  4966kN, tb=861
35.Kd3 Ke6 36.Kc2 Kf7 37.Kc1 Kf6 38.Kb2 Ke6 39.Kb1 Kf7 40.Kc2 Ke7
  =  (-0.09)   Depth: 19/44   00:00:22  9483kN, tb=1384
35.Kd3 Ke6 36.Kc2 Kf7 37.Kc1 Kf6 38.Kb2 Ke6 39.Kb1 Kf7 40.Kc2 Ke7
  =  (-0.09)   Depth: 20/46   00:00:44  19146kN, tb=3863
35.Kd3 Ke6
  ³  (-0.34)   Depth: 21/48   00:02:06  65619kN, tb=9758
35.Kd3 Ke6
  µ  (-0.84)   Depth: 21/48   00:02:23  76131kN, tb=11235
35.Kd3 Kc5 36.a3 bxa3 37.Kc3 a2 38.Kb2 d4 39.exd4+ Kxd4 40.Kxa2 Ke4 41.f5
  -+  (-4.70)   Depth: 21/50   00:04:08  142014kN, tb=17944
35.a3
  -+  (-4.69)   Depth: 21/50   00:04:40  159694kN, tb=20658
35.a3
  -+  (-4.34)   Depth: 21/50   00:04:49  166247kN, tb=21600
35.a3 b3+ 36.Kb2 Ke6 37.Kc1 Kf7 38.Kd2 Ke7 39.Kc3 Kf7 40.Kb2
  -+  (-1.53)   Depth: 21/50   00:05:21  186067kN, tb=23271
35.Kd2
  -+  (-1.52)   Depth: 21/50   00:06:08  212210kN, tb=26822
35.Kd2
  µ  (-1.17)   Depth: 21/50   00:06:20  219390kN, tb=27498
35.Kd2 Ke6 36.Kd3 Kf6 37.Kc2 Ke7 38.Kb2 Kf7 39.Kc2 Kf6 40.Kb2 Ke7 41.Kc2 Kf6
42.Kb2 Ke7 43.Kc2 Kf6
  =  (-0.09)   Depth: 21/50   00:06:53  238201kN, tb=30477
35.Kd2 Ke6 36.Kd3 Kf6 37.Kc2 Ke7 38.Kb2 Kf7 39.Kc2
  =  (-0.09)   Depth: 22/50   00:07:21  250606kN, tb=35799
35.Kd2 Ke6 36.Kd3 Kf6 37.Kc2 Ke7 38.Kb2 Kf7 39.Kc2
  =  (-0.09)   Depth: 23/50   00:08:42  287698kN, tb=53133

Cheers,

Chuck



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