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Subject: Re: A Brave Queen...!

Author: Luis Smith

Date: 12:01:45 12/18/02

Go up one level in this thread


On December 18, 2002 at 14:10:04, Art Basham wrote:

>In 1964 Tal played...Qd6...!
>
>I am wondering if any chess programs find it too...
>
>[D]rnb1k1nr/1p3pbp/p1p3p1/q3p3/2B1PB2/2N2N2/P1PQ1PPP/1R2R1K1 w - - 0 13
>
>This is the actual position at move 13...
>Taken from the book, "Power Mates"...

It takes Aristarch 4.5 on a Pentium III 1 GHZ about 1:45 to see Qd6 and about
2:15 to start giving it a better eval.  Here is the full eval after 5 minutes.

New game
rnb1k1nr/1p3pbp/p1p3p1/q3p3/2B1PB2/2N2N2/P1PQ1PPP/1R2R1K1 w - - 0 1

Analysis by Aristarch 4.5:

New game
rnb1k1nr/1p3pbp/p1p3p1/q3p3/2B1PB2/2N2N2/P1PQ1PPP/1R2R1K1 w - - 0 1

Analysis by Aristarch 4.5:

1.Nxe5 Bxe5
  ³  (-0.42)   Depth: 2/2   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 b5 2.Bb3 Kf8
  ±  (1.03)   Depth: 4/14   00:00:00
1.Bg5 h6 2.Be3 b5 3.Bb3 Qc7
  ±  (0.84)   Depth: 4/14   00:00:00
1.Be3 b5 2.Bb3 Kf8
  ±  (0.85)   Depth: 4/14   00:00:00
1.Be3 b5 2.Be2 Kf8 3.Red1
  ±  (1.05)   Depth: 4/14   00:00:00
1.Be3 b5 2.Bd3 Be6 3.Ra1
  ±  (1.07)   Depth: 4/14   00:00:00
1.Be3 b5 2.Bb3 Qc7 3.Rbd1 Kf8
  ±  (0.94)   Depth: 5/14   00:00:00
1.Bg5 h6 2.Be3 b5 3.Bb3 Qc7 4.Red1
  ±  (0.95)   Depth: 5/14   00:00:00
1.Bg5 h6 2.Be3 b5 3.Bb3 Qc7 4.Red1
  ±  (1.15)   Depth: 5/14   00:00:00
1.Bg5 h6 2.Be3 b5 3.Bb3 b4 4.Na4
  ±  (1.25)   Depth: 5/14   00:00:00
1.Bg5 h6 2.Be3 b5 3.Bb3 b4 4.Na4 Kf8
  ±  (0.83)   Depth: 6/18   00:00:01  243kN
1.Bg5 h6 2.Be3 b5 3.Bb3 b4 4.Ne2 Kf8
  ±  (0.81)   Depth: 6/18   00:00:01  355kN
1.Be3 b5 2.Bb3 Qc7 3.Rbd1 Kf8
  ±  (0.82)   Depth: 6/18   00:00:01  359kN
1.Be3 b5 2.Bb3 Qc7 3.Rbd1 Kf8 4.Qd8+ Qxd8 5.Rxd8+ Ke7
  ±  (1.02)   Depth: 6/18   00:00:01  369kN
1.Be3 b5 2.Bb3 b4 3.Na4 Nd7 4.Ng5 Nh6
  ±  (1.16)   Depth: 6/18   00:00:01  444kN
1.Be3 b5 2.Nd5 Qxd2
  ±  (1.32)   Depth: 7/19   00:00:03  977kN
1.Bg3 b5 2.Bb3 b4 3.Ne2 Bg4 4.Ng5 Nh6 5.Red1
  ±  (1.33)   Depth: 7/20   00:00:04  1343kN
1.Bg3 b5 2.Nxe5 bxc4 3.Nxc4 Bxc3 4.Nxa5 Bxd2
  ±  (1.33)   Depth: 7/22   00:00:04  1467kN
1.Bg3 Qc5 2.Bb3 Nd7 3.Ng5 f5 4.exf5
  ±  (0.91)   Depth: 8/22   00:00:05  1943kN
1.Bg3 Qc5 2.Qd3 b5 3.Rbd1 Nd7 4.Bb3 Kf8 5.Ng5
  ±  (0.80)   Depth: 8/22   00:00:06  2274kN
1.Be3 Qc5 2.Bxc5 b5
  ±  (0.81)   Depth: 8/22   00:00:06  2306kN
1.Be3 Qc5 2.Bxc5 b5
  ±  (1.01)   Depth: 8/22   00:00:07  2417kN
1.Be3 b5 2.Nd5 Qxd2 3.Nxd2 cxd5 4.Bxd5 Be6 5.Bxa8 Bxa2
  ±  (1.32)   Depth: 8/23   00:00:10  3603kN
1.Be3 Qc7 2.Bb6 Qd7
  +-  (1.50)   Depth: 9/26   00:00:19  7748kN
1.Be3 b5 2.Nd5 Qxd2 3.Nxd2 cxd5 4.Bxd5 Be6 5.Bxa8 Bxa2 6.Rbd1 Bc4
  +-  (1.53)   Depth: 10/27   00:00:56  26337kN
1.Qd6 Qxc3 2.Red1
  +-  (1.54)   Depth: 10/31   00:01:38  45279kN
1.Qd6 Qxc3 2.Red1
  +-  (1.74)   Depth: 10/31   00:01:43  46917kN
1.Qd6 f6 2.Rxb7 Bxb7
  +-  (1.84)   Depth: 10/31   00:02:13  61281kN
1.Qd6 f6 2.Rxb7
  +-  (1.84)   Depth: 11/31   00:02:37  72730kN
1.Qd6 Nd7 2.Nd5
  +-  (2.26)   Depth: 12/31   00:04:40  127648kN



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