Author: Omid David Tabibi
Date: 21:21:23 07/15/03
Go up one level in this thread
On July 15, 2003 at 23:18:36, Robert Hyatt wrote:
>On July 15, 2003 at 22:05:59, Peter Skinner wrote:
>
>>On July 15, 2003 at 15:21:17, Robert Hyatt wrote:
>>
>>>Here is a position reached in a game on ICC between Crafty and an
>>>unnamed opponent:
>>>
>>>[D]8/2k2p2/7p/ppPK4/6P1/P6P/8/8 w 0 1
>>>
>>
>>The above position was done by a program that obviously did not use the 5 man
>>tablebases. The only program that I can find in the ones that I have that play
>>c6 without tablebases is Tiger. All the others almost instantly go to Ke4.
>>
>>You were obviously playing a Tiger clone. Odd that it plays it though, and under
>>all versions. ( Tiger, Gambit, Gambit Agg, Gambit Sui ).
>>
>>Nothing else seems to play it. Unless you played a private engine.
>
>
>
>A program needs to know that c6 loses without having endgame tables...
Agree. Even my old pet, Genesis, produces a draw score after Ke4. And the _only_
information Genesis has regarding such endgames is a penalty it assigns for the
average distance of king from all the pawns on the board.
depth time nodes score variation
1/ 2-> 0.01 0k 0.82 1.c5c6
(0kN 1kNPS q=0% h=20% p=28%)
2/ 4-> 0.01 0k 0.79 1.c5c6 f7f6
(0kN 0kNPS q=6% h=3% p=35%)
3/ 5-> 0.02 0k 0.88 1.c5c6 f7f6 2.h3h4
(0kN 8kNPS q=1% h=20% p=63%)
4/ 7-> 0.02 0k 0.77 1.c5c6 b5b4 2.a3b4 a5b4
(0kN 0kNPS q=12% h=16% p=73%)
5/ 7-> 0.03 1k 0.91 1.c5c6 c7b6 2.d5d6 f7f6 3.c6c7
(0kN 83kNPS q=0% h=30% p=81%)
6/ 9 0.04 2k 0.76 1.c5c6 b5b4 2.a3b4 a5b4 3.h3h4 b4b3
(1kN 103kNPS q=2% h=35% p=78%)
6/11 0.04 3k 0.91 1.h3h4 f7f6 2.c5c6 b5b4 3.a3b4 a5b4
(2kN 206kNPS q=5% h=34% p=79%)
6/11-> 0.05 4k 0.91 1.h3h4 f7f6 2.c5c6 b5b4 3.a3b4 a5b4
(2kN 148kNPS q=6% h=33% p=83%)
7/11 0.07 6k 0.83 1.h3h4 f7f6 2.c5c6 b5b4 3.a3b4 a5b4
4.h4h5
(2kN 105kNPS q=1% h=38% p=85%)
7/11-> 0.09 10k 0.83 1.h3h4 f7f6 2.c5c6 b5b4 3.a3b4 a5b4
4.h4h5
(5kN 141kNPS q=1% h=38% p=88%)
8/13 0.12 18k ++ 1.h3h4
(8kN 273kNPS q=5% h=40% p=90%)
8/14 0.15 26k 1.12 1.h3h4 c7c8 2.d5d6 c8b7 3.d6d7 a5a4
4.c5c6 b7a6 5.c6c7
(16kN 280kNPS q=6% h=39% p=92%)
8/14-> 0.18 33k 1.12 1.h3h4 c7c8 2.d5d6 c8b7 3.d6d7 a5a4
4.c5c6 b7a6 5.c6c7
(23kN 262kNPS q=5% h=40% p=92%)
9/15 0.39 108k -- 1.d5e5
(74kN 355kNPS q=1% h=54% p=96%)
9/15 0.48 137k 0.13 1.d5e5 c7c6 2.e5f6 c6c5 3.f6f7 c5c4
4.f7g7 c4b3 5.g7h6 b3a3
(103kN 344kNPS q=1% h=52% p=95%)
9/15 0.51 146k 0.79 1.h3h4 c7d7 2.h4h5 f7f6 3.c5c6 d7c7
4.d5c5 b5b4 5.a3b4 a5b4
(112kN 340kNPS q=1% h=53% p=95%)
9/15-> 0.55 156k 0.79 1.h3h4 c7d7 2.h4h5 f7f6 3.c5c6 d7c7
4.d5c5 b5b4 5.a3b4 a5b4
(123kN 333kNPS q=1% h=54% p=96%)
10/17 0.73 218k 0.83 1.h3h4 c7d7 2.h4h5 f7f6 3.c5c6 d7c7
4.d5c5 b5b4 5.a3b4 a5b4 6.c5d5
(61kN 340kNPS q=2% h=51% p=94%)
10/17-> 0.85 257k 0.83 1.h3h4 c7d7 2.h4h5 f7f6 3.c5c6 d7c7
4.d5c5 b5b4 5.a3b4 a5b4 6.c5d5
(100kN 333kNPS q=1% h=53% p=94%)
11/18 1.03 321k 0.65 1.h3h4 c7d7 2.h4h5 f7f6 3.c5c6 d7c7
4.d5c5 b5b4 5.a3b4 a5b4 6.c5d5 b4b3
(63kN 354kNPS q=2% h=53% p=94%)
11/18-> 1.21 384k 0.65 1.h3h4 c7d7 2.h4h5 f7f6 3.c5c6 d7c7
4.d5c5 b5b4 5.a3b4 a5b4 6.c5d5 b4b3
(127kN 353kNPS q=1% h=56% p=95%)
12/19 2.28 806k -- 1.h3h4
(421kN 393kNPS q=1% h=63% p=98%)
12/19 2.53 897k 0.28 1.h3h4 f7f6 2.h4h5 a5a4 3.c5c6 b5b4
4.g4g5 f6g5 5.a3b4 c7b6 6.d5d6 a4a3
(512kN 387kNPS q=1% h=62% p=97%)
12/19-> 3.13 1142k 0.28 1.h3h4 f7f6 2.h4h5 a5a4 3.c5c6 b5b4
4.g4g5 f6g5 5.a3b4 c7b6 6.d5d6 a4a3
(757kN 394kNPS q=1% h=65% p=98%)
13/20 3.81 1390k 0.09 1.h3h4 f7f6 2.c5c6 b5b4 3.a3b4 a5b4
4.d5c4 c7c6 5.c4b4 c6d5 6.b4c3 d5e4
7.c3c4
(247kN 369kNPS q=3% h=56% p=95%)
13/21-> 5.60 2094k 0.09 1.h3h4 f7f6 2.c5c6 b5b4 3.a3b4 a5b4
4.d5c4 c7c6 5.c4b4 c6d5 6.b4c3 d5e4
7.c3c4
(951kN 386kNPS q=2% h=58% p=97%)
14/22 8.49 3223k -0.12 1.c5c6 b5b4 2.a3b4 a5b4 3.d5d4 c7c6
4.d4c4 c6d6 5.c4b4 d6e5 6.b4c3 f7f5
7.g4f5 e5f5
(1129kN 390kNPS q=2% h=62% p=98%)
14/22 11.76 4522k 0.00 1.d5e4 c7b7 2.h3h4 f7f6 3.e4d5 b7c7
4.d5e4
(2428kN 394kNPS q=2% h=64% p=99%)
14/22-> 12.23 4718k 0.00 1.d5e4 c7b7 2.h3h4 f7f6 3.e4d5 b7c7
4.d5e4
(2624kN 395kNPS q=2% h=64% p=99%)
15/24 21.61 8469k 0.00 1.d5e4 c7b7 2.h3h4 b7c6 3.h4h5 b5b4
4.a3b4 a5b4 5.e4d4 b4b3 6.d4c3 c6c5
7.c3b3 c5d5 8.b3c3
(3750kN 399kNPS q=1% h=59% p=99%)
15/24-> 24.10 9433k 0.00 1.d5e4 c7b7 2.h3h4 b7c6 3.h4h5 b5b4
4.a3b4 a5b4 5.e4d4 b4b3 6.d4c3 c6c5
7.c3b3 c5d5 8.b3c3
(4715kN 396kNPS q=1% h=60% p=99%)
>
>IE crafty sees -1.0 quickly on my laptop with tables turned off. It goes
>better and better for black as it gets deeper..
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