Author: Andrew Williams
Date: 02:14:48 09/06/02
Go up one level in this thread
On September 05, 2002 at 23:00:39, Jon Dart wrote:
>This is from a recent game Arasan-Postmodernist on ICC:
>
>[D] 5k2/ppp5/7p/4Q3/4P3/P4q2/1P3P1P/6K1 w - -
>
>Crafty analysis output:
> 30. Qf5+
> ({14:-0.46} 30. Qf5+ Qxf5 31. exf5 Ke7 32. f4 Kf6 33. Kf2 Kxf5
>34. Kg3 c5 35. Kh4 Kf6 36. Kh5 Kg7 37. f5 b5 $15)
> ({14:+1.92} 30. Qe6 Kg7 31. e5 Qe4 32. h3 Qb1+ 33. Kg2 Qg6+ 34.
>Qxg6+ Kxg6 35. f4 Kf5 36. Kg3 a5 37. Kh4 Kg6 38. e6 Kf6 $18)
> ({14:+1.11} 30. Qd4 Ke7 31. Kf1 Ke6 32. Qd5+ Ke7 33. Ke1 b6 34.
>Qe5+ Kd7 35. Qg7+ Kc8 36. Qh8+ Kb7 37. Qe5 Ka6 38. Qxc7 Qxe4+ 39. Kd2 $16)
> ({14:+1.13} 30. Qh8+ Ke7 31. Qh7+ Kd8 32. Qg8+ Ke7 33. Qg7+
>$16)
>
>In the game, Arasan played Qf5+ and eventually lost. Arasan 5.4 wants to play
>Qf5+ even after 10 minutes search on an Athlon 1.3GHz. Arasan 6.0 does switch to
>Qe6 eventually, but it takes a long time (about 8 minutes).
>
>--Jon
PM was expecting Qd5 in the game, and while pondering expected the score to be
about -1.60 for itself. Given the position to search, it picks Qe6 after about 3
seconds on my Athlon 1200:
6= +2.28 00:00:00.09 17149 1.Qc5 Ke8 2.Qb5 Ke7 3.Qxb7 Qg4 4.Kf1 Qf4
7b +1.77 00:00:00.50 102777 1.Qd5 c6 2.Qd8 Kf7 3.Qd7 Kg6 4.Qxb7 Qxe4
5.Qxa7
7= +1.83 00:00:00.51 105604 1.Qd5 c6 2.Qd8 Kf7 3.Qd7 Kg6 4.Qd6 Kh5
5.e5
8b +1.83 00:00:01.02 206315 1.Qd4 Ke8 2.e5 Qe2 3.Qxa7 Qxb2 4.f4
8= +2.01 00:00:01.50 312763 1.Qd4 Ke8 2.e5 Ke7 3.Qc5 Ke6 4.Qxc7 Qe2
9b +1.92 00:00:03.22 693106 1.Qe6 Kg7 2.e5 Qf7 3.Qg4 Qg6 4.Qxg6 Kxg6
5.e6 Kf6
9= +1.94 00:00:03.24 699827 1.Qe6 Kg7 2.e5 Qf7 3.Qg4 Qg6 4.Qxg6 Kxg6
5.e6 Kf6
10> +1.92 00:00:06.45 1412358 1.Qe6 Kg7 2.e5 Qf7 3.Qg4 Qg6 4.h3
10= +1.93 00:00:06.46 1415848 1.Qe6 Kg7 2.e5 Qf7 3.Qg4 Qg6 4.h3
It sticks with it for at least 12 minutes.
Andrew
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