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Subject: Re: any computer see 46. Bf6...

Author: Uri Blass

Date: 23:39:36 08/01/03

Go up one level in this thread


On August 02, 2003 at 00:01:32, Slater Wold wrote:

>On August 01, 2003 at 23:19:51, Eelco de Groot wrote:
>
>>That looks good Slater! I didn't think that Rebel was going to find it. I don't
>>have a supercomputer, with 500MHz Celeron and with a lot less hashtables, 28 Mb,
>>after entering Bf6 gxf6 exf6 the score still was not convincing when I broke it
>>off.
>>But you are more than six times as fast!
>
>You have to see the rook trade, if you're ever going to see a 'win', and *no*
>engine I have tested will trade the rooks.  They all see Rd7+, but none consider
>trading.

Shredder7.04 fail high again and again on trading the rooks so I believe it can
find the right move from the root position if you give it enough time.

New game
2rR4/1k3p2/2p1pP2/1pP2n1P/pP3K2/8/P4P2/8 w - - 0 1

Analysis by Shredder 7.04:

3.Rxc8 Kxc8 4.Ke4
  -+  (-2.76)   Depth: 1/2   00:00:00
3.Rxc8 Kxc8 4.Ke4
  -+  (-2.72)   Depth: 1/3   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 1/3   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 1/15   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 2/15   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 3/15   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 4/15   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 5/15   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 6/15   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 7/15   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 8/15   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 9/15   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 10/15   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 11/15   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  µ  (-1.01)   Depth: 12/15   00:00:00
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2
  µ  (-0.76)   Depth: 13/27   00:00:01  137kN
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nxa2 9.Rg8 Re8+
10.fxe8Q
  ³  (-0.26)   Depth: 13/30   00:00:02  428kN
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.a3 Nc2 8.Rg2
  ³  (-0.26)   Depth: 13/30   00:00:04  812kN
3.Rd7+ Ka6 4.Rxf7 Nd4 5.Ke5 Nc2 6.Rg7 Nxb4 7.f7 Rf8 8.Kxe6 Nd5 9.Kd6 Re8
10.fxe8Q
  =  (-0.01)   Depth: 14/30   00:00:08  1885kN
3.Rd7+ Rc7 4.Rd8 Rc8 5.Rd7+ Rc7 6.Rd8 Rc8
  =  (0.00)   Depth: 14/33   00:00:11  2577kN
3.Rd7+ Rc7 4.Rd8 Rc8 5.Rd7+ Rc7 6.Rd8 Rc8
  =  (0.00)   Depth: 15/33   00:00:15  3573kN
3.Rd7+ Kb8 4.Rxf7 Rh8 5.Rd7 Kc8 6.Ra7 Kb8 7.Rd7 Kc8 8.Ra7 Kb8 9.Rd7 Kc8
  =  (0.00)   Depth: 16/34   00:00:27  6616kN
3.Rxc8 Kxc8 4.Kg5 Nd4 5.h6 Nf3+ 6.Kh5 Ne5 7.h7 Ng6 8.Kh6 Ne5
  =  (0.01)   Depth: 16/34   00:00:28  6773kN
3.Rxc8 Kxc8 4.Kg5 Kd7 5.a3 Nd4 6.h6 Nf3+ 7.Kh5 Ne5 8.h7 Ng6 9.Kh6 e5 10.Kg7 Ke6
11.f3 Kd5
  =  (0.13)   Depth: 16/34   00:00:28  6830kN
3.Rxc8 Kxc8 4.Kg5 Kd7 5.a3 Nd4 6.Kg4 Nf5 7.Kg5 Nd4 8.Kg4 Nf5 9.Kg5 Nd4
  =  (0.00)   Depth: 17/34   00:00:29  7200kN
3.Rxc8 Kxc8 4.Kg5 Kd7 5.a3 Nd4 6.h6 Nf3+ 7.Kh5 Ne5 8.h7 Ng6 9.Kh6 e5 10.Kg7 Ke6
11.f3 Kd7
  =  (0.25)   Depth: 18/34   00:00:33  8129kN
3.Rxc8 Kxc8 4.Kg5 Kd7 5.a3 Nd4 6.h6 Nf3+ 7.Kh5 Ne5 8.h7 Ng6 9.Kh6 e5 10.Kg7 Ke8
11.f3 Kd8 12.Kxf7 e4 13.Kxg6
  ²  (0.60)   Depth: 18/34   00:00:34  8387kN
3.Rxc8 Kxc8 4.Kg5 Kd7 5.a3 Nd4 6.h6 Nf3+ 7.Kh5 Ne5 8.h7 Ng6 9.Kh6 e5 10.Kg7 Ke8
11.f3 Kd8 12.Kxf7 e4 13.Kxg6
  ±  (0.85)   Depth: 19/34   00:00:40  9986kN
3.Rxc8 Kxc8 4.Kg5 Kd7 5.a3 Nd4 6.h6 Nf3+ 7.Kh5 Ne5 8.h7 Ng6 9.Kh6 e5 10.Kg7 Ke8
11.f3 Kd8 12.Kxf7 e4 13.Kxg6
  ±  (1.35)   Depth: 19/34   00:00:41  10234kN
3.Rxc8 Kxc8 4.Kg5 Kd7 5.a3 Nd4 6.h6 Nf3+ 7.Kh5 Ne5 8.h7 Ng6 9.Kh6 e5 10.Kg7 Ke8
11.f3 Kd8 12.f4 exf4
  ±  (1.35)   Depth: 19/34   00:00:41  10312kN
3.Rxc8 Kxc8 4.Kg5 Kd7 5.a3 Nd4 6.h6 Nf3+ 7.Kh5 Ne5 8.h7 Ng6 9.Kh6 e5 10.Kg7 Ke6
11.f3 e4 12.fxe4 Ke5
  +-  (1.55)   Depth: 20/34   00:00:56  14011kN
3.Rxc8 Kxc8 4.Kg5 Kd7 5.a3 Nd4 6.h6 Nf3+ 7.Kh5 Ne5 8.h7 Ng6 9.Kh6 Kd8 10.Kg7 Ke8
  +-  (1.71)   Depth: 21/37   00:01:27  21550kN
3.Rxc8 Kxc8 4.Kg5 Kd7 5.a3 Nd4 6.h6 Nf3+ 7.Kh5 Ne5 8.h7 Ng6 9.Kh6 Kd8 10.Kg7 Ke8
11.Kg8 e5 12.f3 Ne7+ 13.fxe7 Kd7 14.h8Q
  +-  (1.96)   Depth: 22/39   00:02:24  34722kN
3.Rxc8 Kxc8 4.Kg5 Kd7 5.a3 Nd4 6.h6 Nf3+ 7.Kh5 Ne5 8.h7 Ng6 9.Kh6 Kd8 10.Kg7 e5
11.Kxf7 Kd7
  +-  (2.46)   Depth: 22/39   00:02:28  35851kN
3.Rxc8 Kxc8 4.Kg5 Kd7 5.a3 Nd4 6.h6 Nf3+ 7.Kh5 Ne5 8.h7 Ng6 9.Kh6 e5 10.Kg7 e4
11.h8R Nxh8 12.Kh7 Ke6 13.f4 Kxf6 14.Kh6
  +-  (2.46)   Depth: 22/39   00:02:29  36210kN

After going back and some learning when it for some reason forgot the 2.46

New game
3R4/1kr2pp1/2p1p3/1pP1PnBP/pP3K2/8/P4P2/8 w - - 0 1

Analysis by Shredder 7.04:

1.Rd7 Rxd7 2.h6
  -+  (-2.81)   Depth: 1/2   00:00:00
1.Rd7 Rxd7 2.h6
  -+  (-4.87)   Depth: 1/3   00:00:00
1.Rd7 Rxd7 2.h6
  -+  (-6.94)   Depth: 1/3   00:00:00
1.Ke4 Ka6
  =  (0.25)   Depth: 1/3   00:00:00
1.Ke4 Ka6
  ²  (0.43)   Depth: 1/3   00:00:00
1.Ke4 Ka6
  ²  (0.50)   Depth: 2/3   00:00:00
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 2/3   00:00:00
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 2/7   00:00:00
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 3/7   00:00:00
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 4/7   00:00:00
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 5/7   00:00:00
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 6/7   00:00:00
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 7/7   00:00:00  1kN
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 8/8   00:00:00  4kN
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 9/9   00:00:00  7kN
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 10/10   00:00:00  10kN
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 11/11   00:00:00  20kN
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 12/12   00:00:00  31kN
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 13/13   00:00:01  63kN
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 14/14   00:00:01  118kN
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 15/15   00:00:01  200kN
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 16/16   00:00:02  377kN
1.Bf6 gxf6 2.exf6 Rc8 3.Rxc8 Kxc8 4.Kg5
  ±  (1.18)   Depth: 17/17   00:00:03  622kN
1.Bf6 gxf6 2.exf6
  ±  (1.18)   Depth: 18/33   00:00:09  1956kN
1.Bf6 gxf6 2.exf6
  ±  (1.18)   Depth: 19/33   00:00:20  4533kN
1.Bf6 gxf6 2.exf6 Nh4 3.Kg4 Ng6 4.f4 Rc8 5.Rxc8 Ne7 6.fxe7 Kxc8 7.e8Q+ Kc7
8.Qxf7+ Kd8 9.Qxe6 a3 10.Qxc6 Ke7 11.Qxb5
  +-  (1.43)   Depth: 20/37   00:00:47  10908kN

(, eim 02.08.2003)

Uri



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