Author: Dieter Buerssner
Date: 08:44:18 10/06/01
Go up one level in this thread
On October 06, 2001 at 11:00:12, Uri Blass wrote:
>On October 06, 2001 at 10:11:41, Dieter Buerssner wrote:
>
>>On October 05, 2001 at 15:53:32, Uri Blass wrote:
[much snipped]
>>>Zarkov4.5T - Yace
>>>[D]1nr1rbk1/qp3ppp/4b3/pQ1pPpB1/N2P4/P1R2N2/1P3PPP/4R1K1 b - - 0 1
>>>I suspect that only material evaluation can find that 20...Bd7 is losing a pawn
>>>when 20...h6 and it may be interesting to see if I am right.
>>
>>I cannot understand. You mean that h6 does not lose material? I tried for 10
>>minutes, and there could be seen no loss of material for both moves.
With "I cannot understand" I meant a possible language problem. After your "when
20...h6" there is missing something.
>Did you try only material evaluation and saw 0.00 for both moves.
Yes. Running in the background; -0.1 means I have a N vs. B. I reach not the
depth you have shown with Deep Fritz. Actually I think, the shown line will lose
material later. Now, move numbers counted from one in the position above. After
1...Bd7:
138359 1.217 -0.10 7t 2.Qb3 h6 3.Bh4 Rxc3 4.bxc3 g5 5.Bg3 Qa6 {-10}
206352 1.685 -0.10 7. 2.Qb3 h6 3.Bh4 Rxc3 4.bxc3 g5 5.Bg3 Qa6 {-10}
379140 2.758 -0.10 8t 2.Qb3 h6 3.Rxc8 Bxc8 4.Bd2 Rd8 5.Nc3 Be6 6.Nb5H
{-10}
572667 4.106 -0.10 8. 2.Qb3 h6 3.Rxc8 Bxc8 4.Bd2 Rd8 5.Nc3 Be6 6.Nb5
{-10}
1273830 8.726 -0.10 9t 2.Qb3 h6 3.Rxc8 Rxc8 4.Bd2 Bc6 5.Nb6 Rd8 6.e6
fxe6H {-90}
1881883 12.561 -0.10 9. 2.Qb3 h6 3.Rxc8 Rxc8 4.Bd2 Bc6 5.Nb6 Rd8 6.e6
fxe6 {-90}
3802502 24.563 -0.10 10t 2.Qb3 h6 3.Rxc8 Rxc8 4.Bd2 Bc6 5.Nb6 Rd8 6.e6
fxe6 7.Rxe6 {-10}
8370506 53.348 -0.10 10. 2.Qb3 h6 3.Rxc8 Rxc8 4.Bd2 Bc6 5.Nb6 Rd8 6.e6
fxe6 7.Rxe6 {-10}
14270783 1:30.4 -0.10 11t 2.Qb3 h6 3.Rxc8 Rxc8 4.Bd2 Bc6 5.Nb6 Rd8 6.a4
Kh8 7.Re2 Qa6 {-10}
22249148 2:28.2 -0.10 11. 2.Qb3 h6 3.Rxc8 Rxc8 4.Bd2 Bc6 5.Nb6 Rd8 6.a4
Kh8 7.Re2 Qa6 {-10}
36631729 4:06.0 -0.10 12t 2.Qb3 h6 3.Rxc8 Rxc8 4.Bd2 Bc6 5.Nb6 Rd8 6.Na4
Kh8 7.Nc3 Qa6 8.e6 {-10}
58808183 6:29.2 -0.10 12. 2.Qb3 h6 3.Rxc8 Rxc8 4.Bd2 Bc6 5.Nb6 Rd8 6.Na4
Kh8 7.Nc3 Qa6 8.e6 {-10}
102790293 11:07.3 -0.10 13t 2.Qb3 h6 3.Rxc8 Rxc8 4.Bd2 Bc6 5.Nb6 Rd8 6.Na4
Kh8 7.Nc3 Qa6 8.e6 fxe6 {-90}
166751791 18:03.9 -0.10 13. 2.Qb3 h6 3.Rxc8 Rxc8 4.Bd2 Bc6 5.Nb6 Rd8 6.Na4
Kh8 7.Nc3 Qa6 8.e6 fxe6 {-90}
After 1...h6:
127877 1.390 -0.10 7. 2.Rxc8 Rxc8 3.Bd2H Nc6H 4.Nb6H Rd8H 5.Re2H Kh8H
{-10}
192896 1.804 -0.10 8t 2.Rxc8 Rxc8 3.Bd2 Nc6 4.Nb6 Rd8 5.Re2 Kh8 6.g3
{-10}
525869 4.736 -0.10 8. 2.Rxc8 Rxc8 3.Bd2 Nc6 4.Nb6 Rd8 5.Re2 Kh8 6.g3
{-10}
713885 5.944 -0.10 9t 2.Rxc8 Rxc8 3.Bd2 Nc6 4.Nb6 Rd8 5.Re2 Kh8 6.g3
Qa6 {-10}
1603929 11.781 -0.10 9. 2.Rxc8 Rxc8 3.Bd2 Nc6 4.Nb6 Rd8 5.Re2 Kh8 6.g3
Qa6 {-10}
2052207 14.855 -0.10 10t 2.Rxc8 Rxc8 3.Bd2 Nc6 4.Nb6 Rd8 5.Re2 Kh8 6.g3
Qa6 7.Qxa6 {991}
4301339 29.553 -0.10 10. 2.Rxc8 Rxc8 3.Bd2 Nc6 4.Nb6 Rd8 5.Re2 Kh8 6.g3
Qa6 7.Qxa6 {991}
6005162 40.644 -0.10 11t 2.Rxc8 Rxc8 3.Bd2 Nc6 4.Nb6 Rd8 5.Re2 Kh8 6.g3
Qa6 7.Qxa6 bxa6 {-10}
12300370 1:20.2 -0.10 11. 2.Rxc8 Rxc8 3.Bd2 Nc6 4.Nb6 Rd8 5.Re2 Kh8 6.g3
Qa6 7.Qxa6 bxa6 {-10}
15724790 1:41.3 -0.10 12t 2.Rxc8 Rxc8 3.Bd2 Nc6 4.Nb6 Rd8 5.Re2 Kh8 6.g3
Qa6 7.Qxa6 bxa6 8.Kf1 {-10}
32860993 3:30.5 -0.10 12. 2.Rxc8 Rxc8 3.Bd2 Nc6 4.Nb6 Rd8 5.Re2 Kh8 6.g3
Qa6 7.Qxa6 bxa6 8.Kf1 {-10}
44282035 4:43.5 -0.10 13t 2.Rxc8 Rxc8 3.Bd2 Nc6 4.Nb6 Rd8 5.Re2 Kh8 6.g3
Qa6 7.Qxa6 bxa6 8.Kf1 Be7 9.Bc3 {-10}
90562571 9:20.3 -0.10 13. 2.Rxc8 Rxc8 3.Bd2 Nc6 4.Nb6 Rd8 5.Re2 Kh8 6.g3
Qa6 7.Qxa6 bxa6 8.Kf1 Be7 9.Bc3 {-10}
>I suspected that Bd7 lose material from only material evaluation and that yace
>saw positional compensation for the pawn so it chose Bd7 but I have no program
>with only material evaluation near me to verify if it is truth.
It may still be the case, that positional compensation was seen in lines in the
search tree, and there is no contradiction. The lines that do not loose material
may be seen much worse than a pawn positionally.
Regards,
Dieter
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.