Author: Dieter Buerssner
Date: 15:16:55 07/07/01
Go up one level in this thread
On July 07, 2001 at 15:51:46, Peter McKenzie wrote:
> 2r2rk1/1p2bppp/1qn1p3/p2pPn2/1P1P1P1P/P2Q1NP1/1B2N3/2R1K2R w K -
>
>This position was reached in a game on ICC, with LambChop black and a human
>white. LambChop just played a5, which allows the opponent to attack on the king
>side with g4 Nh6 Ng5 g6 h5 and white is winning I think.
>
>I was a little surprised that it takes Chop 11ply to play g4 (initially it
>preferred b5), and even after a 13ply search the score is still slightly
>negative (0.2 in black's favour).
Yace looks at g4 rather early for some while, but the switches to b5 again. At
depth 11, it fails high for g4. I did not have the patience for depth 13, which
would probably take quite some time. AMD K6-2 475, 35 M hash (in the background,
but had most of the CPU):
1474829 11.816 -0.24 8t 1.b5 Na7 2.Rxc8 Rxc8 3.g4 Nh6 4.g5 Nf5 5.a4 {0}
2646070 20.992 -0.23 8t+ 1.g4 Nh6 2.g5 Nf5 3.b5 Qxb5 4.Qxb5 Ncxd4 {841}
3121153 24.985 -0.13 8t 1.g4 Nh6 2.g5 Nf5 3.b5 Na7 4.Nc3 a4 5.Nxd5 exd5
6.Qxf5 Rxc1+ 7.Bxc1 Nxb5 {0}
3698583 30.260 -0.13 8. 1.g4 Nh6 2.g5 Nf5 3.b5 Na7 4.Nc3 a4 5.Nxd5 exd5
6.Qxf5 Rxc1+ 7.Bxc1 Nxb5 {0}
6880950 52.868 -0.25 9t 1.g4 Nh6 2.g5 Nf5 3.b5 Na7 4.Nc3 Ng3 5.Rg1 {0}
8451397 1:05.2 -0.24 9t+ 1.b5 Na7 2.a4 Rxc1+ 3.Bxc1 Rc8 4.g4 Ng3 5.Nxg3
Rxc1+ 6.Ke2 Bf6 {-10}
9382282 1:13.6 -0.14 9t 1.b5 Na7 2.a4 Rxc1+ 3.Bxc1 Rc8 4.g4 Nh6 5.Rg1
Bb4+ 6.Bd2 Be7 {0}
11333130 1:30.3 -0.14 9. 1.b5 Na7 2.a4 Rxc1+ 3.Bxc1 Rc8 4.g4 Nh6 5.Rg1
Bb4+ 6.Bd2 Be7 {0}
16745816 2:10.8 -0.11 10t 1.b5 Na7 2.a4 Rxc1+ 3.Bxc1 Rc8 4.g4 Nh6 5.g5
Nf5 6.Ba3 Bxa3 {HT} {-350}
22330531 3:01.5 -0.11 10. 1.b5 Na7 2.a4 Rxc1+ 3.Bxc1 Rc8 4.g4 Nh6 5.g5
Nf5 6.Ba3 Bxa3 {HT} {-350}
38171550 5:05.1 -0.12 11t 1.b5 Na7 2.a4 Rxc1+ 3.Bxc1 Rc8 4.g4 Ng3 5.Nxg3
Rxc1+ 6.Ke2H Rc4H 7.Ng5H {HT} {-10}
66985781 8:38.5 -0.11 11t+ 1.g4 Nh6 2.Ng5 g6 3.h5 Bxg5 4.fxg5 Nxg4 5.hxg6
axb4 6.Rxc6 Nh2 {270}
94335207 12:07.4 0.29 11++ 1.g4 Nh6 2.Ng5 g6 3.h5 Bxg5 4.fxg5 Nxg4 5.hxg6
axb4 6.Rxc6 Nh2 {270}
131801738 17:15.8 0.43 11t 1.g4 axb4 2.gxf5 bxa3 3.Bc3 Nb4 4.Qd2 Qb5 5.Rd1
exf5 {HT} {100}
141126042 18:39.4 0.43 11. 1.g4 axb4 2.gxf5 bxa3 3.Bc3 Nb4 4.Qd2 Qb5 5.Rd1
exf5 {HT} {100}
>Any suggestions of what sort of evaluation terms or extensions might help here
>would be welcome :-)
Sorry, I have no good suggestion ...
Regards,
Dieter
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