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Subject: Re: A Brave Queen...!

Author: Richard Pijl

Date: 15:46:40 12/18/02

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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"...

Baron finds it in 6 seconds on an AMD Athlon MP 2000+. Uri reported that Movei
had problems maintaining the line, so I let it run a little longer. Baron held
on to Qd6:

 ply       time     nodes  score  pv

  4(11)-      0     25612    105  f4g5 b7b5
  4(11)&      0     26569     93  f4g5 b7b5 c4b3 c8g4
  4(11).      0     39398     93  f4g5 b7b5 c4b3 c8g4
  5(11)&      0     52195    122  f4g5 f7f6 g5e3 b7b5 c4b3
  5(13).      0    124463    122  f4g5 f7f6 g5e3 b7b5 c4b3
  6(15)-      1    577145     92  f4g5 h7h6
  6(15)&      1    602433     87  f4g5 h7h6 d2d6 b8d7 g5d2 a5d8
  6(15)&      2    840352    106  f4g3 f7f6 e1d1 b7b5 c4b3 c8g4
  6(15).      2    840394    106  f4g3 f7f6 e1d1 b7b5 c4b3 c8g4
  7(17)&      2   1089044     99  f4g3 b7b5 c4b3 b5b4 c3a4 c8g4 e1d1
  7(18)&      4   1685525    103  f4g5 b7b5 c4b3 c8g4 e1d1 b8d7 b1b2
  7(18)+      6   2348461    136  d2d6
  7(18)&      7   2648455    152  d2d6 f7f6 f4d2 g7f8 d6d3
  7(18).      8   2835856    152  d2d6 f7f6 f4d2 g7f8 d6d3
  8(20)&     11   4178175    134  d2d6 f7f6 f4d2 g7f8 d6d3 a5c7 e1d1 c8g4
  8(20).     18   6470484    134  d2d6 f7f6 f4d2 g7f8 d6d3 a5c7 e1d1 c8g4
  9(21)+     26   9259209    164  d2d6
  9(21)&     28   9909855    164  d2d6 f7f6 b1b7 c8b7 d6e6 g8e7 e6f7 e8d8 e1d1
b8d7 c4e6 b7c8
  9(23).     43  15713695    164  d2d6 f7f6 b1b7 c8b7 d6e6 g8e7 e6f7 e8d8 e1d1
b8d7 c4e6 b7c8
 10(26)&     69  25566345    164  d2d6 f7f6 b1b7 c8b7 d6e6 g8e7 e6f7 e8d8 e1d1
b8d7 c4e6 b7c8
 10(26).    132  49543746    164  d2d6 f7f6 b1b7 c8b7 d6e6 g8e7 e6f7 e8d8 e1d1
b8d7 c4e6 b7c8
 11(28)&    217  81738997    192  d2d6 f7f6 f3e5 f6e5 e1d1 g7f6 b1b7 f6e7 b7e7
g8e7 f4e5 h8f8
 11(29).    426 161931605    192  d2d6 f7f6 f3e5 f6e5 e1d1 g7f6 b1b7 f6e7 b7e7
g8e7 f4e5
 12(30)+    674 247334050    222  d2d6
 12(31)&    845 306876809    225  d2d6 f7f6 f3e5 f6e5 e1d1 g7f6 b1b7 f6e7 b7e7
g8e7 f4e5 h8f8 e5f6



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