Author: Dieter Buerssner
Date: 18:25:48 09/18/01
Go up one level in this thread
On September 18, 2001 at 09:40:26, Eduard Nemeth wrote:
>Position after move 61. Kg7:
>
> 3Q4/6k1/p5p1/6P1/Pq6/4P1K1/8/8 w - -
>
>After 62. Qf6+ is the win not easy. But after 62. Qd4+ is the game easy to win,
>and the game end! For any programs ist the move Qd4+ not easy to find.
>
>:-(
Yace is rather fast for this position, and finds Qd4 after less than 10000
nodes. Comparing the scores for the position after Qd4 and Qf6 suggests, that
there is no danger, that Yace would switch back to Qf6.
2631 0.122 2.12 3. 1.Qf6+ Kh7 2.Qxa6 Qe4 {160}
4738 0.159 1.67 4-- 1.Qf6+ Kh7 2.Qf7+ Kh8 3.Qe8+ Kh7 4.Qd7+ Kg8
5.Qg4 Qxg4+ 6.Kxg4H {80}
5730 0.191 1.37 4t 1.Qf6+ Kh7 2.Qf7+ Kh8 3.Qxg6 Qxa4 4.Qf6+ Kg8H
{80}
8315 0.220 1.45 4t+ 1.Qd4+ Qxd4 2.exd4 Kf7 3.Kf3 Ke6 {80}
8406 0.230 1.55 4t 1.Qd4+ Qxd4 2.exd4 Kf7 3.Kf4 Ke6H {80}
9035 0.264 1.55 4. 1.Qd4+ Qxd4 2.exd4 Kf7 3.Kf4 Ke6 {80}
9631 0.285 1.61 5t 1.Qd4+ Qxd4 2.exd4 Kf7 3.Kf4 Ke6 4.Ke4 a5 {80}
27436 0.583 1.61 5. 1.Qd4+ Qxd4 2.exd4 Kf7 3.Kf4 Ke6 4.Ke4 a5 {80}
28435 0.593 1.72 6t 1.Qd4+ Qxd4 2.exd4 Kf7 3.d5 Ke7 4.Kf4 Kd6H
5.Ke4H {80}
101295 1.373 1.72 6. 1.Qd4+ Qxd4 2.exd4 Kf7 3.d5 Ke7 4.Kf4 Kd6 5.Ke4
{80}
103453 1.406 1.64 7t 1.Qd4+ Qxd4 2.exd4 Kf7 3.d5 Ke7 4.Kf4 Kd6 5.Ke4
a5 6.Kd4H {80}
318402 3.013 1.64 7. 1.Qd4+ Qxd4 2.exd4 Kf7 3.d5 Ke7 4.Kf4 Kd6 5.Ke4
a5 6.Kd4 {80}
321988 3.056 1.79 8t 1.Qd4+ Qxd4 2.exd4 Kf7 3.Kf3 Ke7 4.Ke4 Kd6
5.a5H Ke6H 6.d5+H Kd6H {80}
840641 6.957 1.79 8. 1.Qd4+ Qxd4 2.exd4 Kf7 3.Kf3 Ke7 4.Ke4 Kd6 5.a5
Ke6 6.d5+ Kd6 {80}
866756 7.195 1.79 9t 1.Qd4+ Qxd4 2.exd4 Kf7 3.Kf3 Ke7 4.Ke4 Kd6 5.a5
Ke6 6.d5+ Kd6 7.Kd4 {80}
2174239 16.635 1.79 9. 1.Qd4+ Qxd4 2.exd4 Kf7 3.Kf3 Ke7 4.Ke4 Kd6 5.a5
Ke6 6.d5+ Kd6 7.Kd4 {80}
2224966 17.070 1.94 10t 1.Qd4+ Qxd4 2.exd4 Kf7 3.Kf3 Ke7 4.Ke4 Kd6 5.a5
Ke6 6.d5+ Kd6 7.Kd4 Kd7 {80}
4687918 35.714 1.94 10. 1.Qd4+ Qxd4 2.exd4 Kf7 3.Kf3 Ke7 4.Ke4 Kd6 5.a5
Ke6 6.d5+ Kd6 7.Kd4 Kd7 {80}
Regards,
Dieter
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