Author: Dann Corbit
Date: 20:28:42 05/21/99
Go up one level in this thread
On May 21, 1999 at 22:21:27, Dave Gomboc wrote:
[cough, blush]
>>[White "Glucksberg"]
>>[Black "Najdorf"]
At 15 minutes, neither is fully understood by crafty on a PII 300.
In the first position, it chose the wrong move, and had just realized that it
was going to hurt.
r1b2rk1/pp1n2pp/2p1p3/3p1pNq/2PP1Pn1/3BP1P1/PP2N1Kb/R1BQ1R2 b - - acd 13; acn
102540168; acs 900; ce 82; pv Bxg3 Rh1 Bh2 cxd5 Ndf6 Nf3 Nxd5 Qb3 Qg6 Rxh2
Ngxe3+ Kh1 Qg4;
Here's the log's last little whimper:
12-> 11:03 0.82 1. ... Bxg3 2. Rh1 Bh2 3. cxd5 Ndf6
4. Nf3 Nxd5 5. Qb3 Qg6 6. Rxh2 Ngxe3+
7. Kh1 Qg4
13 13:23 -- 1. ... Bxg3
I think half an hour will probably find it.
Interesting also that crafty picked the right move for the wrong reasons early
on (before changing to something else not as good):
6 0.82 -0.25 1. ... Ndf6 2. c5 Ne4 3. Nxe4 fxe4
4. Bc2 Qf5
6 1.24 0.14 1. ... Bg1 2. Nxg1 Qh2+ 3. Kf3 Qh1+
4. Ke2 Qg2+ 5. Ke1 Nh2 6. N1f3 Nxf1
7. Bxf1 Qxg3+
6-> 1.45 0.14 1. ... Bg1 2. Nxg1 Qh2+ 3. Kf3 Qh1+
4. Ke2 Qg2+ 5. Ke1 Nh2 6. N1f3 Nxf1
7. Bxf1 Qxg3+
7 1.92 0.14 1. ... Bg1 2. Nxg1 Qh2+ 3. Kf3 Qh1+
4. Ke2 Qg2+ 5. Ke1 Nh2 6. N1f3 Nxf1
7. Bxf1 Qxg3+
7 6.24 0.18 1. ... e5 2. Rh1 e4 3. Bc2 dxc4 4.
Ne6 Rf6
On the second position, Crafty flipped back and forth with Qh1+ and e5 until ply
8 at 25.5 seconds. But even by ply 11, crafty was only aware of a one pawn
advantage:
r1b2rk1/pp1n2pp/2p1p3/3p1pN1/2PP1Pn1/3BPKP1/PP5q/R1BQ1RN1 b - - acd 12; acn
110502697; acs 900; ce 101; pv e5 cxd5 e4+ Bxe4 fxe4+ Kxe4 Nf2+ Rxf2 Qxf2 dxc6
bxc6 Kd3 Nf6 Ne2 Ba6+ Kd2;
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