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Subject: Re: Do you have pos. of truly unexpected sac. which is sound? Does it exist?

Author: Dann Corbit

Date: 13:50:32 10/31/02

Go up one level in this thread


On October 31, 2002 at 14:43:17, José Antônio Fabiano Mendes wrote:

> There is a Black pawn on a7, sorry.
> White: Granda Zuniga   Black: Seirawan, Buenos Aires 1993
> [D]r2qkb1r/pb1p1p1p/1pn2np1/2p1p3/2P1P3/2NP1NP1/PP3PBP/R1BQ1RK1 w

Here is Ruffian output:
E:\programme\winboard\ruffian>ruffian -h 300M -t 999 -T jafm.epd
Hash size 314572800
Ruffian 1.0.1
feature done=0
Loading configuration: ruffian.cfg
Warning: EGTB_HASH_SIZE changed, default=1048576, newvalue=8388608
Logfile: Thu Oct 31 11:54:50 2002
Total hash size 300M
Initializing tablebases: /programme/winboard/nalimov
Testing jafm.epd, 999 seconds, extra ply 3
Testing:    Solution: Kh1
  r2qkb1r/pb1p1p1p/1pn2np1/2p1p3/2P1P3/2NP1NP1/PP3PBP/R1BQ1RK1 w kq -
  Depth   Time  Score    Best line
   8/18   1.02   0.36    Nd5 Bg7 Bh3 O-O Bg5 d6 Qc2 a6
   8-->   1.79   0.36    Nd5 Bg7 Bh3 O-O Bg5 d6 Qc2 a6
   9/21   3.37   0.31    Nd5 Bg7 Re1 d6 a3 O-O Bg5 Nd4 Nxd4 cxd4
   9-->   5.85   0.31    Nd5 Bg7 Re1 d6 a3 O-O Bg5 Nd4 Nxd4 cxd4
  10/22   8.87   0.27    Nd5 Bg7 Re1 h6 Be3 O-O Qd2 g5 Qc3 Nxd5
  10/24  18.63   x.xx    Nh4
  10/24  20.84   0.29    Nh4 Bg7 f4 O-O fxe5 Nxe5 Bg5 Re8 Nd5 Bxd5 cxd5 Neg4
  10/24  23.15   x.xx    Ne1
  10/24  25.27   0.33    Ne1 Bg7 f4 O-O Nc2 Qc7 fxe5 Nxe5 Bg5 Qd6 Nd5 Nxd5
                         cxd5
  10-->  25.65   0.33    Ne1 Bg7 f4 O-O Nc2 Qc7 fxe5 Nxe5 Bg5 Qd6 Nd5 Nxd5
                         cxd5
  11/24  31.45   0.29    Ne1 Bg7 f4 O-O fxe5 Nxe5 Nf3 Re8 Nxe5 Rxe5 Bf4 Re6
  11/24  36.83   x.xx    Nd5
  11/24  45.37   0.30    Nd5 Bg7 Re1 O-O Bg5 d6 Qd2 Nd4 Nxd4 cxd4 Bh3 Bxd5
                         exd5
  11-->  58.61   0.30    Nd5 Bg7 Re1 O-O Bg5 d6 Qd2 Nd4 Nxd4 cxd4 Bh3 Bxd5
                         exd5
  12/28   1:22   0.29    Nd5 Bg7 Re1 O-O Bg5 d6 Qd2 Re8 Rac1 Nd4 Nxd4 Bxd5
                         cxd5 exd4
  12-->   2:01   0.29    Nd5 Bg7 Re1 O-O Bg5 d6 Qd2 Re8 Rac1 Nd4 Nxd4 Bxd5
                         cxd5 exd4
  13/30   3:45   0.26    Nd5 Bg7 a3 Nxd5 cxd5 Ne7 b4 O-O d6 Nc6 bxc5 bxc5
                         Bg5 Bf6
  13/30   4:08   x.xx    Ne1
  13/30   4:14   0.27    Ne1 Bg7 f4 O-O fxe5 Nxe5 Bg5 Re8 Qd2 Rc8 Nb5 Rc6
                         Nxa7 Rce6
  13-->   6:26   0.27    Ne1 Bg7 f4 O-O fxe5 Nxe5 Bg5 Re8 Qd2 Rc8 Nb5 Rc6
                         Nxa7 Rce6
  14/33   7:44   0.31    Ne1 Bg7 f4 O-O fxe5 Nxe5 Bg5 h6 Bf4 Nh5 Bd2 Nf6 Qc1
                         Neg4 Bf4
  14/33  13:21   x.xx    Nh4


Time: 16:39, cpu 95.57%, nodes 444616999, nps 445048
Hash: 128M, used 99%, hits 24%
EGTB: probs 0, hits 0

Best move: Ne1 (0.31)  Not solved (0/1)



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