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Subject: Re: Warp - Diep, WCCC

Author: Matthew White

Date: 15:07:12 12/02/02

Go up one level in this thread


Tested the positions with Ruffian 1.0.1 on a PIII 800. Results inline. I'm still
incredibly impressed by this engine.

Matt

On December 02, 2002 at 13:45:57, Peter McKenzie wrote:

>I've been looking at some positions from the Warp-Diep game from the WCCC in
>Maastricht this year.  Here are a few test positions:
>
>[D]7k/p3Qp1p/1p2n3/4nqP1/2P5/2P3R1/P5RP/3r2BK w - -
  Depth   Time  Score    Best line
   8/19   1.03   2.86    Qxa7 Nf4 Qa8+ Kg7 Rf2 Ned3 Rff3 Ne5 Qa4 Nxf3 Qxd1
   8-->   3.06   2.86    Qxa7 Nf4 Qa8+ Kg7 Rf2 Ned3 Rff3 Ne5 Qa4 Nxf3 Qxd1
   9/24   3.88   2.73    Qxa7 Nf4 Qa8+ Kg7 Rf2 Ned3 Rff3 Ne5 Re3 Nxc4
   9-->  10.31   2.73    Qxa7 Nf4 Qa8+ Kg7 Rf2 Ned3 Rff3 Ne5 Re3 Nxc4
  10/24  11.59     --    Qxa7
  10/26  15.31   2.15    Qxa7 Nf4 Qe7 Kg8 Qe8+ Kg7 g6 hxg6 Rg5 Rxg1+ Rxg1
                         Qe4+ R5g2 Kh6
  10/28  28.56   x.xx    Re2
  10/29  43.48   2.44    Re2 Nd3 Qf6+ Qxf6 gxf6 Ndf4 Re4 Nh5 Rf3 Kg8 Rf5 Nc5
  10/29  47.95   x.xx    Qf6+
  10-->  59.38   2.44    Re2 Nd3 Qf6+ Qxf6 gxf6 Ndf4 Re4 Nh5 Rf3 Kg8 Rf5 Nc5
  11/32   1:20   2.39    Re2 Nd3 Qf6+ Qxf6 gxf6 Ndf4 Rf2 h5 Rb2 h4 Rg4 h3
                         Rg3
  11/32   1:31   x.xx    Qf6+
  11/32   1:37   2.47    Qf6+ Qxf6 gxf6 Rd8 c5 bxc5 Rb2 Nd7 Rb7 Nxf6 Rxf7
                         Ne4 Rgf3
  11-->   1:45   2.47    Qf6+ Qxf6 gxf6 Rd8 c5 bxc5 Rb2 Nd7 Rb7 Nxf6 Rxf7
                         Ne4 Rgf3
  12/32   1:55   2.50    Qf6+ Qxf6 gxf6 h6 Rg8+ Kh7 Ra8 Nc6 Rc8 Na5 Re8 Nc6
                         Rg3 Rd2 Rg2 Nc7 Rxd2 Nxe8 Rd7
  12-->   2:28   2.50    Qf6+ Qxf6 gxf6 h6 Rg8+ Kh7 Ra8 Nc6 Rc8 Na5 Re8 Nc6
                         Rg3 Rd2 Rg2 Nc7 Rxd2 Nxe8 Rd7
  13/36   2:50   2.51    Qf6+ Qxf6 gxf6 h6 Rg8+ Kh7 Rb8 Rf1 Rb7 Rxf6 Rxa7
                         Nxc4 Rd7 Ng5 Rc7 Ne5 Bd4

It likes Qf6+ after ~45 seconds.
>
>Warp played Qe8+ followed by Qa4 here, which wasn't very good.
>Qf6+ was suggested and certainly looks like an improvement, although perhaps its
>not so easy to white to make progress there.
>
>The current Warp however prefers Qxa7, which also looks good.  Personally I like
>Qxa7 better than Qf6.
>What do other engines play here?
>
>[D]8/p4pkp/1p2n3/2P1n1P1/8/1QP3R1/P5RP/2qr2BK b - -

  Depth   Time  Score    Best line
   8-->   1.19  -1.80    ... Nxc5 Qb4 Rd3 Rxd3 Ncxd3 Qe7 Qxc3 Qxa7 Nf4
   9/20   2.28  -1.84    ... Nxc5 Qb4 Kg8 Qh4 Ng6 Qh6 Nd3 Re2 Qxc3
   9-->   3.80  -1.84    ... Nxc5 Qb4 Kg8 Qh4 Ng6 Qh6 Nd3 Re2 Qxc3
  10/22   6.09  -1.75    ... Nxc5 Qb4 Rd3 Qh4 Qxc3 Bxc5 Qxc5 Qh6+ Kg8 Rxd3
                         Nxd3 Re2
  10/24   7.22   x.xx    ... Nf4
  10/24   8.01  -1.52    ... Nf4 Rc2 Rxg1+ Rxg1 Qe3 Qb1 Qf3+ Rgg2 Nxg2 Rxg2
                         Nd3 Kg1 Nxc5 Qc2
  10-->   8.58  -1.52    ... Nf4 Rc2 Rxg1+ Rxg1 Qe3 Qb1 Qf3+ Rgg2 Nxg2 Rxg2
                         Nd3 Kg1 Nxc5 Qc2
  11/25  10.85  -1.19    ... Nf4 Rc2 Rxg1+ Rxg1 Qe3 Qb1 Qf3+ Rgg2 Nxg2 Rxg2
                         Nd3 Qg1 bxc5 c4 f5
  11-->  12.92  -1.19    ... Nf4 Rc2 Rxg1+ Rxg1 Qe3 Qb1 Qf3+ Rgg2 Nxg2 Rxg2
                         Nd3 Qg1 bxc5 c4 f5
  12/30  18.39  -1.12    ... Nf4 Rc2 Rxg1+ Rxg1 Qe3 Qb1 Qe4+ Rcg2 Ned3 Qf1
                         Nxg2 Rxg2 Nf4 cxb6 axb6 Kg1 Nxg2 Qxg2
  12-->  24.61  -1.12    ... Nf4 Rc2 Rxg1+ Rxg1 Qe3 Qb1 Qe4+ Rcg2 Ned3 Qf1
                         Nxg2 Rxg2 Nf4 cxb6 axb6 Kg1 Nxg2 Qxg2
  13/30  36.31     ++    ... Nf4
  13/34   1:31  -0.14    ... Nf4 Rc2 Rxg1+ Rxg1 Qe3 Qb1 Qe4+ Rcg2 Ned3 Qf1
                         Nxg2 Qf6+ Kg8 Qd8+ Kg7 Qd4+ Qxd4 cxd4 Ne3 c6
  13-->   1:47  -0.14    ... Nf4 Rc2 Rxg1+ Rxg1 Qe3 Qb1 Qe4+ Rcg2 Ned3 Qf1
                         Nxg2 Qf6+ Kg8 Qd8+ Kg7 Qd4+ Qxd4 cxd4 Ne3 c6
  14/34   2:36   0.00    ... Nf4 Rc2 Rxg1+ Rxg1 Qe3 Qb1 Qe4+ Rcg2 Ned3 Qf1
                         Nxg2 Qf6+ Kg8 Qd8+ Kg7 Qf6+
  14-->   2:51   0.00    ... Nf4 Rc2 Rxg1+ Rxg1 Qe3 Qb1 Qe4+ Rcg2 Ned3 Qf1
                         Nxg2 Qf6+ Kg8 Qd8+ Kg7 Qf6+
  15...   2:51   1/46    Nf4

It finds the draw after 2:36, and it plays Nf4!! after 7.22 seconds.
>
>Here Diep played Nf4!! which forces a draw.  How long do other engines take to
>find Nf4 ?
>Warp needs about 11 minutes on my PIII 1Ghz.
>
>[D]8/p4pkp/1p6/2P1n1P1/5n2/1QP1q3/P1R4P/6RK w - -
  Depth   Time  Score    Best line
   8-->   1.12   1.19    Qb1 Qf3+ Rgg2 Nxg2 Rxg2 Nd3 Qg1 bxc5 c4 f5
   9/20   1.46   1.12    Qb1 Qe4+ Rcg2 Ned3 Qf1 Nxg2 Rxg2 Nf4 cxb6 axb6 Kg1
                         Nxg2 Qxg2
   9-->   1.97   1.12    Qb1 Qe4+ Rcg2 Ned3 Qf1 Nxg2 Rxg2 Nf4 cxb6 axb6 Kg1
                         Nxg2 Qxg2
  10/24   2.05     --    Qb1
  10/27   2.73   0.14    Qb1 Qe4+ Rcg2 Ned3 Qf1 Nxg2 Qf6+ Kg8 Qd8+ Kg7 Qd4+
                         Qxd4 cxd4 Ne3 c6
  10-->   4.43   0.14    Qb1 Qe4+ Rcg2 Ned3 Qf1 Nxg2 Qf6+ Kg8 Qd8+ Kg7 Qd4+
                         Qxd4 cxd4 Ne3 c6
  11/27   5.01   0.00    Qb1 Qe4+ Rcg2 Ned3 Qf1 Nxg2 Qf6+ Kg8 Qd8+ Kg7 Qf6+
  11-->   8.25   0.00    Qb1 Qe4+ Rcg2 Ned3 Qf1 Nxg2 Qf6+ Kg8 Qd8+ Kg7 Qf6+
  12/27  12.38   0.02    Qb1 Qe4+ Rcg2 Ned3 Qf1 Nxg2 Rxg2 Nf4 h3 Nxg2 Qxg2
                         Qe1+ Kh2 bxc5 c4 f5
  12-->  24.51   0.02    Qb1 Qe4+ Rcg2 Ned3 Qf1 Nxg2 Rxg2 Nf4 h3 Nxg2 Qxg2
                         Qe1+ Kh2 bxc5 c4 f5
  13/34  53.60     ++    Qb1
  13/34   1:01   0.00    Qb1 Qf3+ Rgg2 Nxg2 Rxg2 Nd3 Qg1 bxc5 c4 Nf4 Qf2 Qxg2+
                         Qxg2 Nxg2 Kxg2 f5 gxf6+ Kxf6 Kf3 h5
  13-->   1:15   0.00    Qb1 Qf3+ Rgg2 Nxg2 Rxg2 Nd3 Qg1 bxc5 c4 Nf4 Qf2 Qxg2+
                         Qxg2 Nxg2 Kxg2 f5 gxf6+ Kxf6 Kf3 h5
It basically found the draw after 5 seconds, lost it slightly, and then picked
it up again at a minute. Though one might argue that an evaluation of 0.02 is
still a draw.
>
>This is the game after Nf4 Rc2 Rxg1 Rxg1 Qe3.
>How long for your engine to show a draw score here?  Warp's score drops to +0.3
>at depth 12, in about 3.5 minutes.  I'll let it continue to see when it sees the
>draw.
>
>thanks,
>Peter



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