Author: Mike Byrne
Date: 22:06:35 06/02/02
Go up one level in this thread
On June 02, 2002 at 12:46:55, Jon Dart wrote:
>Some new test positions from Arasan games:
>
[snip]
>
>This one is from a test game vs. Phalanx (always a good opponent). Arasan played
>Rb8? and lost, but Qg5! wins. Pharaon finds this pretty quickly, but both Crafty
>18.10 and Arasan take quite a long time:
>
>[D] r2qkb1r/pB1n1ppp/4p3/3p4/8/1P2Pb2/P1QP1PPP/RNB2RK1 b kq -
Modified version of crafty runninmg SMP 1.7GHz "sees" the initial move in 43
seconds doesn't return the winning pv until 3 minutes
White(1): setboard r2qkb1r/pB1n1ppp/4p3/3p4/8/1P2Pb2/P1QP1PPP/RNB2RK1 b kq - 0 1
+---+---+---+---+---+---+---+---+
8 | *R| | | *Q| *K| *B| | *R|
+---+---+---+---+---+---+---+---+
7 | *P| B | | *N| | *P| *P| *P|
+---+---+---+---+---+---+---+---+
6 | | | | | *P| | | |
+---+---+---+---+---+---+---+---+
5 | | | | *P| | | | |
+---+---+---+---+---+---+---+---+
4 | | | | | | | | |
+---+---+---+---+---+---+---+---+
3 | | P | | | P | *B| | |
+---+---+---+---+---+---+---+---+
2 | P | | Q | P | | P | P | P |
+---+---+---+---+---+---+---+---+
1 | R | N | B | | | R | K | |
+---+---+---+---+---+---+---+---+
a b c d e f g h
Black(1): hard
pondering enabled.
Black(1): sd 62
search depth set to 62.
Black(1): st 10
search time set to 10.00.
Black(1): force
Black(1): analyze
clearing hash tables
time surplus 0.00 time limit 10.00 (10.00)
nss depth time score variation (1)
starting thread 1
(3) 8 0.37 1.05 1. ... Qg5 2. g3 Rd8 3. d4 Qh5 4. Nd2
Be2 5. Re1 Bd6
8 0.83 0.76 1. ... Rb8 2. Bc6 Qg5 3. g3 Rd8 4.
d3 Qf6 5. Bb2 e5 <HT>
(2) 8-> 0.87 0.76 1. ... Rb8 2. Bc6 Qg5 3. g3 Rd8 4.
d3 Qf6 5. Bb2 e5 <HT>
9 1.23 1.04 1. ... Rb8 2. Bc6 Qg5 3. g3 Rd8 4.
d3 Bd6 5. Nd2 Qf6 6. Bb2
(3) 9-> 2.09 1.04 1. ... Rb8 2. Bc6 Qg5 3. g3 Rd8 4.
d3 Bd6 5. Nd2 Qf6 6. Bb2
10 3.86 ++ 1. ... Rb8!!
(2) 10 7.12 0.22 1. ... Rb8 2. gxf3 Qg5+ 3. Kh1 Qf6
4. Qc7 Qxf3+ 5. Kg1 Qg4+ 6. Qg3 Qxg3+
7. fxg3 Rxb7 8. Nc3 Bc5
10-> 7.51 0.22 1. ... Rb8 2. gxf3 Qg5+ 3. Kh1 Qf6
4. Qc7 Qxf3+ 5. Kg1 Qg4+ 6. Qg3 Qxg3+
7. fxg3 Rxb7 8. Nc3 Bc5
11 14.17 -- 1. ... Rb8
11 23.17 1.01 1. ... Rb8 2. Qc6 Be2 3. Re1 Bd3 4.
Bb2 Qb6 5. Qxb6 axb6 6. Bc6 Rc8 7.
Rc1
11 43.50 0.10 1. ... Qg5 2. g3 Qg4 3. Bxa8 Qh3 4.
Qc8+ Ke7 5. Ba3+ Kf6 6. Bb2+ Kg6 7.
Qc2+ Be4 8. Qxe4+ dxe4 9. Bxe4+ f5
10. Bf3
11-> 48.09 0.10 1. ... Qg5 2. g3 Qg4 3. Bxa8 Qh3 4.
Qc8+ Ke7 5. Ba3+ Kf6 6. Bb2+ Kg6 7.
Qc2+ Be4 8. Qxe4+ dxe4 9. Bxe4+ f5
10. Bf3
12 53.15 ++ 1. ... Qg5!!
12 3:01 -6.51 1. ... Qg5 2. g3 Qg4 3. Qd1 Bxd1 4.
f3 Bxf3 5. Bxa8 Bc5 6. Rxf3 Qxf3 7.
Nc3 O-O
12-> 3:10 -6.51 1. ... Qg5 2. g3 Qg4 3. Qd1 Bxd1 4.
f3 Bxf3 5. Bxa8 Bc5 6. Rxf3 Qxf3 7.
Nc3 O-O
13 3:15 -- 1. ... Qg5
13 4:25 -6.67 1. ... Qg5 2. g3 Qg4 3. Qd1 Bxd1 4.
f3 Bxf3 5. Bxa8 h5 6. Bc6 h4 7. Rxf3
<HT>
13-> 4:58 -6.67 1. ... Qg5 2. g3 Qg4 3. Qd1 Bxd1 4.
f3 Bxf3 5. Bxa8 h5 6. Bc6 h4 7. Rxf3
Tiger "sees" this move almost instantly on my machine
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.