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Subject: Re: A related, but different, puzzle for your program

Author: Slater Wold

Date: 17:51:19 09/27/01

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On September 27, 2001 at 18:08:25, Roy Eassa wrote:

>How long before your program sees that White is winning with either e7 or Bh6?
>Take any reasonable definition of "winning", e.g., ahead by at least 2 pawns.
>
>[D]rnb2r1k/pp1p2pp/2p1P3/4p3/2B3Q1/2q4P/P1P3P1/1RB4K w - - 0 1
>
>
>On my Athlon 1.2, Fritz 6 took over 11 minutes, whereas Gambit Tiger 2
>Aggressive took about 4 minutes.

Deep Junior 7 - W,S
rnb2r1k/pp1p2pp/2p1P3/4p3/2B3Q1/2q4P/P1P3P1/1RB4K w - - 0 1

Analysis by Deep Junior 7:

1.exd7 Qe1+ 2.Kh2 Nxd7
  -+  (-4.79)   Depth: 3   00:00:00
1.e7 Re8 2.Bg5 Qxc2
  -+  (-2.86)   Depth: 3   00:00:00  2kN
1.e7 Re8 2.Bb2 Qa5 3.Rf1 Qb4 4.Bxe5 Rxe7
  -+  (-2.90)   Depth: 6   00:00:00  14kN
1.e7!
  -+  (-2.60)   Depth: 9   00:00:00  189kN
1.Bd3!
  -+  (-2.40)   Depth: 9   00:00:00  347kN
1.Bd3!
  -+  (-2.10)   Depth: 12   00:00:01  1894kN
1.Bd3! g6 2.Bh6 Qc5 3.Bxf8 Qxf8 4.Rf1 Qc5 5.Qf3 d5
  µ  (-1.36)   Depth: 12   00:00:06  12692kN
1.Bh6!
  µ  (-1.35)   Depth: 12   00:00:08  13290kN
1.Bh6! gxh6 2.e7 Qa3 3.exf8Q+ Qxf8 4.Rf1 Qxf1+ 5.Bxf1 b5 6.Qf5 Kg8 7.Qxe5 Na6
  ±  (0.78)   Depth: 12   00:00:11  13290kN
1.Bh6!
  ±  (1.08)   Depth: 15   00:00:16  31470kN
1.e7!
  ±  (1.28)   Depth: 15   00:00:23  41374kN
1.e7! Re8 2.Bh6 gxh6 3.Rf1 Qa3 4.Rf7 Qc1+ 5.Kh2 Qg5 6.Qe4 Qf4+ 7.Rxf4 d5 8.Rf8+
Kg7 9.Qxe5+ Kg6 10.Bd3+
  +-  (#12)   Depth: 15   00:00:58  103056kN
1.e7! Re8 2.Bh6 gxh6 3.Rf1 Qa3 4.Rf7 Qc1+ 5.Kh2 Qg5 6.Qe4 Qf4+ 7.Rxf4 d5 8.Rf8+
Kg7 9.Qxe5+ Kg6 10.Bd3+
  +-  (#12)   Depth: 15   00:00:59  108154kN

(W,  27.09.2001)



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