Author: Dann Corbit
Date: 10:22:38 10/08/02
There have been a few programs that could solve it. But it usually meant
tweaking parameters until the general play was crappy. Using default settings,
Ruffian runs roughshod over WAC.230. I think I will give Ruffian a go at the
possible refutation line. At any rate, the solution move is the only one with
any real winning chances. Therefore, I salute Ruffian for this monumental
achievement.
E:\programme\winboard\ruffian>ruffian -T 5.epd -t 999 -h 300M
Hash size 314572800
Ruffian 1.0.1
feature done=0
Loading configuration: ruffian.cfg
Warning: EGTB_HASH_SIZE changed, default=1048576, newvalue=8388608
Logfile: Tue Oct 08 10:02:58 2002
Total hash size 300M
Initializing tablebases: /programme/winboard/nalimov
Testing 5.epd, 999 seconds, extra ply 3
Testing: WAC.230 Solution: Rb4
2b5/1r6/2kBp1p1/p2pP1P1/2pP4/1pP3K1/1R3P2/8 b - -
Depth Time Score Best line
12--> 1.40 1.98 ... a4 Ba3 Rh7 f3 Rh5 Kf4 Rh1 Bd6 Rc1 Bb4 Bb7 Ke3
Re1+
13/23 1.93 2.00 ... a4 Ba3 Rh7 Rb1 Rh8 f4 Ba6 Kg4 Kd7 Rb2 Bb5 Kg3
Bc6
13--> 2.34 2.00 ... a4 Ba3 Rh7 Rb1 Rh8 f4 Ba6 Kg4 Kd7 Rb2 Bb5 Kg3
Bc6
14/23 2.63 1.96 ... a4 Ba3 Rh7 Rb1 Rh8 f4 Ba6 Kg4 Rh5 Rb2 Rh7 Bd6
Bb5 Ba3
14--> 3.23 1.96 ... a4 Ba3 Rh7 Rb1 Rh8 f4 Ba6 Kg4 Rh5 Rb2 Rh7 Bd6
Bb5 Ba3
15/25 4.32 2.00 ... a4 Ba3 Rh7 Rb1 Rh8 f4 Ba6 Bb2 Bb5 Ba3 Rh7 Rb2
Rh1 Kf2 Kd7 Ke3
15--> 4.62 2.00 ... a4 Ba3 Rh7 Rb1 Rh8 f4 Ba6 Bb2 Bb5 Ba3 Rh7 Rb2
Rh1 Kf2 Kd7 Ke3
16/29 6.29 1.99 ... a4 Ba3 Rh7 Rb1 Rh8 f4 Ba6 Bb2 Rh5 Kg2 Rh7 Ra1
Bb5 Kg3
16--> 9.05 1.99 ... a4 Ba3 Rh7 Rb1 Rh8 f4 Ba6 Bb2 Rh5 Kg2 Rh7 Ra1
Bb5 Kg3
17/29 12.68 2.00 ... a4 Ba3 Rh7 Rb1 Rh8 f3 Ba6 Bb2 Rh5 f4 Kd7 Ba3
Bb5 Rb2 Rh1 Kg4 Bc6
17/32 28.40 x.xx ... Rb4
17--> 31.67 2.00 ... a4 Ba3 Rh7 Rb1 Rh8 f3 Ba6 Bb2 Rh5 f4 Kd7 Ba3
Bb5 Rb2 Rh1 Kg4 Bc6
18/33 36.36 2.01 ... a4 Ba3 Rh7 Rb1 Rh8 f3 Ba6 Bb2 Rh5 f4 Rh7 Ra1
Bb5 Rb1 Kd7 Ra1 Rh8
18--> 38.47 2.01 ... a4 Ba3 Rh7 Rb1 Rh8 f3 Ba6 Bb2 Rh5 f4 Rh7 Ra1
Bb5 Rb1 Kd7 Ra1 Rh8
19/34 56.08 2.02 ... a4 Ba3 Rh7 Rb1 Rh8 Bb2 Ba6 Kg4 Kd7 Ba3 Rh5 Bb2
Bb5 Ba3 Rh2 Kg3 Rh8 Rb2 Bc6 f3 Bb5 Kf4 Rh1 Ke3
19--> 1:01 2.02 ... a4 Ba3 Rh7 Rb1 Rh8 Bb2 Ba6 Kg4 Kd7 Ba3 Rh5 Bb2
Bb5 Ba3 Rh2 Kg3 Rh8 Rb2 Bc6 f3 Bb5 Kf4 Rh1 Ke3
20/39 1:22 2.02 ... a4 Ba3 Rh7 Rb1 Rh8 Bb2 Ba6 Kg4 Kd7 Ba3 Bb5 f3
Rh2 Rb2 Rh1 Bb4 Rc1 Kf4 Bc6 Ke3 Rg1
20/40 2:29 x.xx ... Rb4
20/40 3:39 ++ ... Rb4
20/40 4:50 2.42 ... Rb4 cxb4 a4 b5+ Kxb5 Ba3 c3 Re2 Kc4 f3 Kxd4 Kf4
Kd3 Rh2 Bd7 Bc1 Bb5 Ba3 c2 Rxc2 Kxc2 Ke3
20--> 4:50 2.42 ... Rb4 cxb4 a4 b5+ Kxb5 Ba3 c3 Re2 Kc4 f3 Kxd4 Kf4
Kd3 Rh2 Bd7 Bc1 Bb5 Ba3 c2 Rxc2 Kxc2 Ke3
21/41 7:34 2.61 ... Rb4 cxb4 a4 b5+ Kxb5 Ba3 c3 Rb1 Kc4 f4 Kxd4 Kf3
Kc4 Ke2 d4 Rb2 cxb2 Bxb2 Kd5 Kf3 Ba6 Kg3 d3
21--> 7:43 2.61 ... Rb4 cxb4 a4 b5+ Kxb5 Ba3 c3 Rb1 Kc4 f4 Kxd4 Kf3
Kc4 Ke2 d4 Rb2 cxb2 Bxb2 Kd5 Kf3 Ba6 Kg3 d3
22/45 12:39 2.71 ... Rb4 cxb4 a4 b5+ Kxb5 Ba3 c3 Rb1 Kc4 f4 Kxd4 Kf3
Kc4 Ke2 d4 Rc1 Ba6 Kd1 Kd3 Rc2 bxc2+ Kc1 Bc4 Bd6
22--> 12:53 2.71 ... Rb4 cxb4 a4 b5+ Kxb5 Ba3 c3 Rb1 Kc4 f4 Kxd4 Kf3
Kc4 Ke2 d4 Rc1 Ba6 Kd1 Kd3 Rc2 bxc2+ Kc1 Bc4 Bd6
Time: 12:53, cpu 97.95%, nodes 490644808, nps 634457
Hash: 128M, used 99%, hits 43%
EGTB: probs 0, hits 0
Best move: Rb4 (2.71) Solved (1/1)
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.