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Subject: Re: Twin testposition (outside passers, pawn endgame)

Author: José Carlos

Date: 04:00:13 03/26/03

Go up one level in this thread


On March 26, 2003 at 06:28:52, Peter Berger wrote:

>These can be tough or very easy depending on engine - some engines seem to know
>too much here. They are also interesting for humans I think.

  Thanks for the interesting positions. I've been working on endgame eval in my
new program lately. These are my results in a PIII 900 with other tasks running,
for Anubis 0.0 alfa.

>[D]6k1/p4p2/6p1/1P2p2p/4q2P/4Q1P1/P4P2/6K1 b - - 0 1
>
>1..Qxe3! wins for black.


10	0.00	4.59	  651433  e4b1 g1g2 b1a2 e3e5 f7f5 g2g1 a2f7 g1g2
				  f7a2
10	0.01	4.95	  736963  e4e3 f2e3 g8f8 g1g2 f8e7 g2f3 e7d6 f3e4
				  f7f5 e4d3 d6d5 a2a4 e5e4 d3c3
10	0.01	5.14	  767742  e4e3 f2e3 g8f8 g1g2 f8e7 g2f3 e7d6 f3e4
				  f7f5 e4d3 d6d5 a2a4 e5e4 d3c3
---------------------------x---------------------------
11	0.02	5.43	  833908  e4e3 f2e3 g8f8 g1g2 e5e4 g2h3 f8e7 g3g4
				  e7d6 h3g3 d6c5 a2a4 h5g4 g3g4
11	0.02	6.98	 1134131  e4e3 f2e3 g8f8 g1g2 e5e4 g2h3 f8e7 g3g4
				  e7d6 h3g3 d6c5 a2a4 h5g4 g3g4
---------------------------x---------------------------
12	0.03	7.29	 1204158  e4e3 f2e3 g8f8 g1g2 e5e4 g2h3 f8e7 g3g4
				  e7d6 h3g3 d6c5 a2a4 c5d5
12	0.03	10.55	 1853688  e4e3 f2e3 g8f8 g1g2 e5e4 g2h3 f8e7 g3g4
				  e7d6 h3g3 d6c5 a2a4 c5d5
---------------------------x---------------------------
13	0.04	11.10	 1976041  e4e3 f2e3 g8f8 g1g2 e5e4 g2h3 f8e7 g3g4
				  e7d6 h3g3 d6c5 g4h5 g6h5 g3f4 c5b5 f4e4
13	0.04	17.72	 3297993  e4e3 f2e3 g8f8 g1g2 e5e4 g2h3 f8e7 g3g4
				  e7d6 h3g3 d6c5 g4h5 g6h5 g3f4 c5b5 f4e4
---------------------------x---------------------------
14	0.09	19.31	 3652211  e4e3 f2e3 g8f8 g1g2 e5e4 g2h3 f8e7 g3g4
				  e7d6 h3g3 d6c5 g4h5 g6h5 g3f4 c5b5 f4e4
				  b5b4
14	0.09	79.88	14859613  e4e3 f2e3 g8f8 g1g2 e5e4 g2h3 f8e7 g3g4
				  e7d6 h3g3 d6c5 g4h5 g6h5 g3f4 c5b5 f4e4
				  b5b4
---------------------------x---------------------------
15	0.59	94.68	17843096  e4e3!?
15	0.93	98.00	18518922  e4e3 f2e3 g8f8 g1g2 f8e7 g2f3 f7f5 a2a4
				  e7d6 f3e2 d6c5
15	0.93	120.16	22690574  e4e3 f2e3 g8f8 g1g2 f8e7 g2f3 f7f5 a2a4
				  e7d6 f3e2 d6c5
---------------------------x---------------------------
16	0.98	125.03	23736827  e4e3 f2e3 g8f8 g1g2 f8e7 g2f3 f7f5 a2a4
				  e7d6 a4a5 d6c5 b5b6 a7b6 a5b6 c5b6 f3e2
				  b6c6 e2f3 c6d5 e3e4
16	0.98	161.30	31016148  e4e3 f2e3 g8f8 g1g2 f8e7 g2f3 f7f5 a2a4
				  e7d6 a4a5 d6c5 b5b6 a7b6 a5b6 c5b6 f3e2
				  b6c6 e2f3 c6d5 e3e4
---------------------------x---------------------------
17	0.98	167.37	32327536  e4e3 f2e3 g8f8 g1g2 f8e7 g2f3 f7f5 a2a4
				  e7d6 f3e2 d6c5 e2d2 c5b4 d2d3 b4a4 d3c4
				  a4a5 c4c5 a5a4



>The second one is also interesting:
>
>[D]6k1/p4p2/6p1/1P2p2p/4q2P/4Q1P1/P4P2/5K2 b - - 0 1
>
>1..Qxe3?? loses for black.


3	0.00	0.13	    1432  e4b1 f1g2 b1a2 e3e5 f7f5
---------------------------x---------------------------
4	0.00	0.19	    2794  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8f7
4	0.00	0.27	    5941  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8f7
---------------------------x---------------------------
5	0.00	0.41	   11627  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8f7 b5b6
				  a7b6 b8b6
5	0.00	0.51	   21604  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8f7 b5b6
				  a7b6 b8b6
---------------------------x---------------------------
6	0.00	0.74	   38562  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8f7 b5b6
				  a7b6 b8b6
6	0.00	0.94	   67925  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8f7 b5b6
				  a7b6 b8b6
---------------------------x---------------------------
7	0.00	1.20	  115557  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8f7 b5b6
				  a7b6 b8b6 a2d5 f2f3
7	0.00	1.52	  175064  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8f7 b5b6
				  a7b6 b8b6 a2d5 f2f3
---------------------------x---------------------------
8	0.00	1.98	  259402  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8f7 b5b6
				  a7b6 b8b6 a2d5 f2f3 d5a8
8	0.00	2.42	  340812  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8f7 b5b6
				  a7b6 b8b6 a2d5 f2f3 d5a8
---------------------------x---------------------------
9	0.00	3.75	  597284  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8f7 b5b6
				  a7b6 b8b6 a2d5 f2f3 d5a8 b6c7 f7e8
9	0.00	4.83	  804524  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8f7 b5b6
				  a7b6 b8b6 a2d5 f2f3 d5a8 b6c7 f7e8
---------------------------x---------------------------
10	0.00	7.15	 1271797  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8g7 b5b6
				  a7b6 b8b6 a2g8 f2f4 g8f7 b6d8
10	0.00	9.43	 1717717  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8g7 b5b6
				  a7b6 b8b6 a2g8 f2f4 g8f7 b6d8
---------------------------x---------------------------
11	0.00	15.46	 2923264  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8g7 b5b6
				  a7b6 b8b6 a2g8 f2f4 g8f7 b6d8 f7e6 d8g8
				  g7g8 g2f2
11	0.00	20.60	 3937219  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8g7 b5b6
				  a7b6 b8b6 a2g8 f2f4 g8f7 b6d8 f7e6 d8g8
				  g7g8 g2f2
---------------------------x---------------------------
12	0.00	33.16	 6389789  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8g7 b5b6
				  a7b6 b8b6 a2g8 f2f4 g8f7 b6d8 f7e6 d8c7
				  e6f7
12	0.00	47.05	 8918981  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8g7 b5b6
				  a7b6 b8b6 a2g8 f2f4 g8f7 b6d8 f7e6 d8c7
				  e6f7
---------------------------x---------------------------
13	0.00	75.06	14484771  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8g7 b5b6
				  a7b6 b8b6 a2g8 f2f4 g8f7 b6d8 f7e6 d8c7
				  g7f8 c7b8 f8e7
13	0.00	104.68	20301372  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8g7 b5b6
				  a7b6 b8b6 a2g8 f2f4 g8f7 b6d8 f7e6 d8c7
				  g7f8 c7b8 f8e7
---------------------------x---------------------------
14	0.00	179.30	35154502  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8g7 b5b6
				  a7b6 b8b6 a2g8 f2f4 g8f7 b6d8 f7e6 d8c7
				  g7f8 g2f2 e6f7
14	0.00	257.66	50295130  e4b1 f1g2 b1a2 e3e5 f7f5 e5b8 g8g7 b5b6
				  a7b6 b8b6 a2g8 f2f4 g8f7 b6d8 f7e6 d8c7
				  g7f8 g2f2 e6f7
---------------------------x---------------------------



>Source: Blitzgame Yace-Crafty,D. Bürßner,A. Williams - ICC discussion


  José C.



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