Author: Robert Hyatt
Date: 21:04:10 02/07/03
Go up one level in this thread
On February 07, 2003 at 03:32:11, Dann Corbit wrote:
>Can't find the original post.
>
>Someone said Ne3, Nf3 were the best moves. Looks pretty clear that a4 wins.
>
>[D]8/8/8/6Np/2N5/Pk6/6K1/8 w - a3
Here is something from an "authority". :) about 150 gigs of egtbs
on a set of disks that won't wait. :)
8 1.68 Mat26 1. Ne4 Kxc4 <EGTB>
8-> 1.82 Mat26 1. Ne4 Kxc4 <EGTB> (s=8)
9 2.45 Mat26 1. Ne4 Kxc4 <EGTB> (s=7)
9-> 7.05 Mat26 1. Ne4 Kxc4 <EGTB> (s=7)
10 7.29 Mat26 1. Ne4 Kxc4 <EGTB> (s=6)
10-> 8.63 Mat26 1. Ne4 Kxc4 <EGTB> (s=7)
11 9.43 Mat26 1. Ne4 Kxc4 <EGTB> (s=6)
11-> 16.04 Mat26 1. Ne4 Kxc4 <EGTB> (s=7)
12 17.02 Mat26 1. Ne4 Kxc4 <EGTB> (s=6)
12-> 23.30 Mat26 1. Ne4 Kxc4 <EGTB> (s=4)
13 24.09 Mat26 1. Ne4 Kxc4 <EGTB> (s=3)
13-> 42.42 Mat26 1. Ne4 Kxc4 <EGTB> (s=5)
14 42.51 Mat26 1. Ne4 Kxc4 <EGTB> (s=4)
14-> 47.20 Mat26 1. Ne4 Kxc4 <EGTB> (s=4)
15 47.28 Mat26 1. Ne4 Kxc4 <EGTB> (s=3)
15-> 1:05 Mat26 1. Ne4 Kxc4 <EGTB> (s=5)
A4 leads to a mate in 91 as the best black can do, according to
the same "authority". However, it would require a close inspection
to be sure it won't go past the 50 move rule...
13 3.14 Mat91 1. ... Kxa4 <EGTB>
13-> 3.30 Mat91 1. ... Kxa4 <EGTB>
14 3.30 Mat91 1. ... Kxa4 <EGTB>
14-> 3.68 Mat91 1. ... Kxa4 <EGTB>
15 3.68 Mat91 1. ... Kxa4 <EGTB>
15-> 4.40 Mat91 1. ... Kxa4 <EGTB>
16 4.40 Mat91 1. ... Kxa4 <EGTB>
16-> 5.21 Mat91 1. ... Kxa4 <EGTB>
17 5.21 Mat91 1. ... Kxa4 <EGTB>
17-> 5.44 Mat91 1. ... Kxa4 <EGTB>
18 5.44 Mat91 1. ... Kxa4 <EGTB>
18-> 6.08 Mat91 1. ... Kxa4 <EGTB>
19 6.08 Mat91 1. ... Kxa4 <EGTB>
19-> 7.33 Mat91 1. ... Kxa4 <EGTB>
20 7.33 Mat91 1. ... Kxa4 <EGTB>
20-> 17.73 Mat91 1. ... Kxa4 <EGTB>
>
>E:\programme\winboard\ruffian>ruffian -h 300M -T \n.epd -t 999 -p 99
>Hash size 314572800
>Ruffian 1.0.1
>feature done=0
>Loading configuration: ruffian.cfg
>Warning: EGTB_HASH_SIZE changed, default=1048576, newvalue=8388608
>Logfile: Fri Feb 07 00:09:21 2003
>Total hash size 300M
>Initializing tablebases: /programme/winboard/nalimov
>Testing \n.epd, 999 seconds, extra ply 99
>Testing: test 1 Solution: Ne3 Nf3
> 8/8/8/6Np/2N5/Pk6/6K1/8 w - a3
> Depth Time Score Best line
> 8--> 1.31 7.70 Ne4 Kc2 Kg3 Kd3 Ncd6 Kc2 Kh4 Kb3 Kxh5 Kxa3
> 9/19 2.39 7.77 Ne4 Ka4 Ned6 Kb3 Kh3 Kc3 Kh4 Kd4 Kxh5
> 9--> 3.50 7.77 Ne4 Ka4 Ned6 Kb3 Kh3 Kc3 Kh4 Kd4 Kxh5
> 10/19 5.45 8.07 Ne4 h4 Ned6 Ka4 Kh3 Kb3 Kxh4 Kc3 Kg4 Kd4 a4
> 10/19 7.86 x.xx a4
> 10/19 7.86 ++ a4
> 10/19 8.09 9.20 a4 Kb4 a5 Kb5 a6 Kc6 Ne6 h4 Nd8+ Kc7 a7 h3+ Kxh3
> 10--> 8.55 9.20 a4 Kb4 a5 Kb5 a6 Kc6 Ne6 h4 Nd8+ Kc7 a7 h3+ Kxh3
> 11/19 8.55 ++ a4
> 11/20 9.42 11.41 a4 Kb4 a5 Kb5 a6 Kc6 Ne6 Kd7 a7 Kxe6 a8=Q
> 11--> 17.34 11.41 a4 Kb4 a5 Kb5 a6 Kc6 Ne6 Kd7 a7 Kxe6 a8=Q
> 12/21 17.39 ++ a4
> 12/26 25.81 15.93 a4 Kc3 a5 h4 a6 Kd4 a7 Kd3 Ne5+ Kd4 Ng6 Ke3 Kh3 Ke2
> a8=Q
> 12--> 45.97 15.93 a4 Kc3 a5 h4 a6 Kd4 a7 Kd3 Ne5+ Kd4 Ng6 Ke3 Kh3 Ke2
> a8=Q
> 13/26 46.15 ++ a4
> 13/26 1:03 16.40 a4 Kc3 a5 Kb3 a6 Kc3 a7 Kd4 a8=Q Kc3 Nd6 Kd2 Kg3
> 13--> 1:49 16.40 a4 Kc3 a5 Kb3 a6 Kc3 a7 Kd4 a8=Q Kc3 Nd6 Kd2 Kg3
> 14/28 2:23 16.53 a4 Kc3 a5 Kb3 a6 Kc3 a7 Kd4 a8=Q Kc5 Ne5 Kd6 Nef7+
> 14--> 4:35 16.53 a4 Kc3 a5 Kb3 a6 Kc3 a7 Kd4 a8=Q Kc5 Ne5 Kd6 Nef7+
> 15/32 6:07 16.83 a4 Kc3 a5 Kb3 a6 Kc3 a7 Kd4 a8=Q Kd3 Qe4+ Kc3 Kg3
> Kb4 Ne6 Kc3
> 15--> 11:50 16.83 a4 Kc3 a5 Kb3 a6 Kc3 a7 Kd4 a8=Q Kd3 Qe4+ Kc3 Kg3
> Kb4 Ne6 Kc3
> 16/34 12:03 ++ a4
> 16... 12:03 1/22 a4
>
>Time: 16:39, cpu 85.26%, nodes 619131774, nps 619732
>Hash: 128M, used 99%, hits 51%
>EGTB: probs 255173, hits 255173
>
>Best move: a4 (17.18) Not solved (0/1)
>
>Summery: 0/1
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