Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Testposition: 23.g4!!

Author: Uri Blass

Date: 08:04:14 07/12/05

Go up one level in this thread


On July 12, 2005 at 10:58:51, Uri Blass wrote:

>On July 12, 2005 at 10:45:43, Uri Blass wrote:
>
>>On July 12, 2005 at 09:04:37, George Tsavdaris wrote:
>>
>>>At move 23 of game 1, Shredder 9 played the amazing 23.g4!! with a high positive
>>>score.......
>>>A truly surprise move in my opinion, but logical if you think about it and only
>>>when you see it afterwards, as it happens all the time........
>>>Fritz 8.00.8 that i tried, finds it very quickly! Any other.....?
>>>
>>>[D]3rk2r/3nbppp/1pB1pn2/pP6/P1P5/2N3P1/1B3P1P/R2R2K1 w k - 0 23
>>
>>Shredder9 has another move in my analysis Ne2 with evaluation of more than +1(I
>>think that I started with 2 options and reduced it to 1)
>>
>>New game,
>>[D]3rk2r/3nbppp/1pB1pn2/pP6/P1P5/2N3P1/1B3P1P/R2R2K1 w k - 0 1
>>
>>Analysis by Shredder 9 UCI:
>>
>>1.Rxd7
>>  ²  (0.50)   Depth: 1/4   00:00:00
>>1.Rxd7
>>  -+  (-2.29)   Depth: 1/4   00:00:00
>>1.Rxd7
>>  =  (0.09)   Depth: 1/4   00:00:00
>>1.Bxd7+
>>  =  (0.24)   Depth: 1/4   00:00:00
>>1.Bxd7+ Rxd7
>>  ²  (0.57)   Depth: 1/4   00:00:00
>>1.Bc1 0-0 2.Bf4 e5 3.Bg5 Nc5 4.Kg2 Rd4 5.Re1 Bd6
>>  ²  (0.58)   Depth: 1/4   00:00:00
>>1.Bc1 0-0 2.Bf4 e5 3.Bg5 Nc5 4.Kg2 Rd4 5.Re1 Bd6
>>  ²  (0.58)   Depth: 1/10   00:00:00
>>1.Bc1 0-0 2.Bf4 e5 3.Bg5 Nc5 4.Kg2 Rd4 5.Re1 Bd6
>>  ²  (0.58)   Depth: 2/10   00:00:00
>>1.Bc1 0-0 2.Bf4 e5 3.Bg5 Nc5 4.Kg2 Rd4 5.Re1 Bd6
>>  ²  (0.58)   Depth: 3/10   00:00:00
>>1.Bc1 0-0 2.Bf4 e5 3.Bg5 Nc5 4.Kg2 Rd4 5.Re1 Bd6
>>  ²  (0.58)   Depth: 4/10   00:00:00
>>1.Bc1 0-0 2.Bf4 e5 3.Bg5 Nc5 4.Kg2 Rd4 5.Re1 Bd6
>>  ²  (0.58)   Depth: 5/10   00:00:00
>>1.Bc1 0-0 2.Bf4 e5 3.Bg5 Nc5 4.Kg2 Rd4 5.Re1 Bd6
>>  ²  (0.58)   Depth: 6/10   00:00:00  1kN
>>1.Bc1 0-0 2.Bf4 e5 3.Bg5 Nc5 4.Kg2 Rd4 5.Re1 Bd6
>>  ²  (0.58)   Depth: 7/10   00:00:00  2kN
>>1.Bc1 0-0 2.Bf4 e5 3.Bg5 Nc5 4.Kg2 Rd4 5.Re1 Bd6
>>  ²  (0.58)   Depth: 8/10   00:00:00  4kN
>>1.Bc1 0-0 2.Bf4 e5 3.Bg5 Nc5 4.Kg2 Rd4 5.Re1 Bd6
>>  ²  (0.58)   Depth: 9/10   00:00:01  7kN
>>1.Bc1 0-0 2.Bf4 e5 3.Bg5 Nc5 4.Kg2 Rd4 5.Re1 Bd6
>>  ²  (0.58)   Depth: 10/10   00:00:02  12kN
>>1.Bc1 0-0
>>  ²  (0.33)   Depth: 11/20   00:00:03  162kN
>>1.Bc1 0-0 2.Bf4 Bb4 3.Na2 Bc5
>>  =  (0.14)   Depth: 11/20   00:00:04  262kN
>>1.Kg2
>>  =  (0.15)   Depth: 11/24   00:00:04  542kN
>>1.Kg2 0-0 2.Ne2 Nc5 3.Bd4 Nfd7 4.f3 Bf6 5.Bxd7 Bxd4
>>  ²  (0.32)   Depth: 11/24   00:00:04  601kN
>>1.f4
>>  ²  (0.33)   Depth: 11/24   00:00:04  888kN
>>1.f4 0-0 2.Ne4 Nxe4 3.Bxe4 Nc5 4.Bc2 Bf6 5.Bxf6 gxf6 6.Kf2 f5 7.Rac1
>>  ²  (0.34)   Depth: 11/24   00:00:05  932kN
>>1.Rd4
>>  ²  (0.35)   Depth: 11/24   00:00:05  999kN
>>1.Rd4 0-0 2.Re1 Nc5 3.Red1 Rxd4 4.Rxd4 Rd8 5.Rxd8+ Bxd8 6.f3 Bc7 7.Kg2 Be5
>>  ²  (0.48)   Depth: 11/24   00:00:05  1036kN
>>1.Rd4 0-0 2.Re1 Nc5 3.Red1 Rxd4 4.Rxd4 Rd8 5.Rxd8+ Bxd8 6.f4 Be7 7.Kg2
>>  ²  (0.32)   Depth: 12/24   00:00:05  1557kN
>>1.Kg2
>>  ²  (0.33)   Depth: 12/24   00:00:06  1814kN
>>1.Kg2 0-0 2.Ne2 Nc5 3.Bd4 Nfd7 4.f4 Bf6 5.Bxd7 Bxd4 6.Nxd4 Rxd7
>>  ²  (0.33)   Depth: 12/24   00:00:06  1889kN
>>1.Kg2 0-0 2.Ne2 Nc5 3.Bd4 Nfd7 4.f4 Bf6 5.Bxd7 Bxd4 6.Rxd4 Rxd7 7.Rxd7
>>  ²  (0.39)   Depth: 13/24   00:00:07  3452kN
>>1.Rd4
>>  ²  (0.40)   Depth: 13/29   00:00:07  3992kN
>>1.Rd4 0-0 2.Re1 Nc5 3.Red1 Rxd4 4.Rxd4 Rd8 5.Rxd8+ Bxd8 6.f4 Be7 7.h3
>>  ²  (0.45)   Depth: 13/31   00:00:07  4092kN
>>1.Rd4 0-0 2.Re1 Bc5 3.Rd2 Nb8 4.Rxd8 Rxd8 5.Rd1 Nxc6 6.bxc6 Rc8 7.Nb5 Ng4 8.Na7
>>Bxf2+ 9.Kh1 Ne3 10.Rd7
>>  ²  (0.37)   Depth: 14/31   00:00:11  6202kN
>>1.Rd4 0-0 2.Rad1 Ne5 3.Rxd8 Rxd8 4.Nd5 Nf3+ 5.Kg2 exd5 6.Kxf3 dxc4 7.Rc1 Rd2
>>8.Bxf6 Bxf6 9.Rxc4 Bd4
>>  =  (0.25)   Depth: 15/31   00:00:22  12265kN
>>1.Kg2
>>  ²  (0.26)   Depth: 15/31   00:00:28  16059kN
>>1.Kg2 0-0 2.h3 Nc5 3.Ba3 g6 4.f4 Kg7
>>  ²  (0.30)   Depth: 15/31   00:00:32  17958kN
>>1.Ne2
>>  ²  (0.31)   Depth: 15/31   00:00:37  20528kN
>>1.Ne2 0-0 2.Bxd7 Rxd7 3.Bxf6 Rxd1+ 4.Rxd1 Bxf6 5.f4 Rc8
>>  ²  (0.44)   Depth: 15/31   00:00:38  21547kN
>>1.Ne2 0-0 2.Nd4 Bb4 3.Nb3
>>  ²  (0.67)   Depth: 16/31   00:00:54  29921kN
>>1.Ne2 0-0 2.Nd4 Nc5 3.Ba3 Bd6 4.Bxc5 Bxc5 5.Nb3 Bb4 6.c5 bxc5 7.Rdc1 Nd7 8.Bxd7
>>Rxd7 9.Nxc5 Rd6 10.Kg2
>>  ²  (0.66)   Depth: 17/33   00:01:17  42426kN
>>1.Ne2 0-0 2.Nd4 Bb4 3.Nb3 h6 4.Kg2 Ng4
>>  ±  (0.88)   Depth: 18/33   00:02:10  69240kN
>>1.Ne2 0-0 2.Nd4 Bb4 3.Nb3 h5 4.Kg2 h4
>>  ±  (1.01)   Depth: 19/33   00:03:24  105737kN
>>1.Ne2 0-0 2.Nd4 h6 3.Nb3
>>  ±  (1.03)   Depth: 20/36   00:05:28  170887kN
>>
>>(,  12.07.2005)
>
>Shredder finds it only at depth 21
>1.g4
>  ±  (1.03)   Depth: 21/43   00:12:48  396202kN
>
>Maybe with history of the game it is easier.
>
>Fruit can also find it and it simply was unlucky to be in the wrong side of the
>board during the game.
>
>
>New game,
>[D]3rk2r/3nbppp/1pB1pn2/pP6/P1P5/2N3P1/1B3P1P/R2R2K1 w k - 0 1
>
>Analysis by Fruit 2.1:
>
>1.Bxd7+ Rxd7 2.Kg2
>  =  (-0.24)   Depth: 1/7   00:00:00
>1.Rab1
>  ²  (0.56)   Depth: 1/7   00:00:00
>1.Rac1
>  ²  (0.57)   Depth: 1/7   00:00:00
>1.Ra2
>  ²  (0.60)   Depth: 1/7   00:00:00
>1.Rd2
>  ²  (0.69)   Depth: 1/7   00:00:00
>1.Rd4
>  ±  (0.74)   Depth: 1/7   00:00:00
>1.Ne4
>  ±  (0.79)   Depth: 1/9   00:00:00
>1.Ne4 0-0
>  ±  (0.71)   Depth: 2/10   00:00:00
>1.Ne4 0-0 2.Rd3
>  ±  (0.82)   Depth: 3/13   00:00:00
>1.Ne4 0-0 2.Bd4 e5 3.Nxf6+ Bxf6
>  ²  (0.69)   Depth: 4/14   00:00:00
>1.Ne4 Nxe4 2.Bxe4 Bf6 3.Ra2 Nc5
>  ²  (0.53)   Depth: 5/14   00:00:00
>1.Rd4 e5 2.Rd3 Ng4 3.Re1
>  ²  (0.66)   Depth: 5/14   00:00:00
>1.Rd4 e5 2.Rd3 h5 3.Nd5 Nxd5 4.cxd5
>  ²  (0.62)   Depth: 6/15   00:00:00  27kN
>1.Rd4 0-0 2.Rad1 Nc5 3.Ba3 Rxd4 4.Rxd4 Rc8
>  ²  (0.42)   Depth: 7/21   00:00:00  84kN
>1.Rd4 0-0 2.Rad1 Nc5 3.Rxd8 Rxd8 4.Rxd8+ Bxd8 5.Bc1 Bc7 6.Be3
>  ²  (0.34)   Depth: 8/21   00:00:01  217kN
>1.Bc1 0-0 2.Be3 Nc5 3.Bf3 Bd6 4.Rd2 h6
>  ²  (0.43)   Depth: 8/21   00:00:01  394kN
>1.Bc1 0-0 2.Bf4 e5 3.Be3 Nc5 4.Bf3 Rd6 5.Rxd6 Bxd6
>  ²  (0.38)   Depth: 9/21   00:00:01  596kN
>1.Bc1 0-0 2.Bf4 Bb4 3.Na2 e5 4.Be3 Nc5 5.Nxb4 axb4 6.Bxc5 bxc5
>  =  (0.17)   Depth: 10/21   00:00:01  1257kN
>1.Ne2 0-0 2.Nd4 Nc5 3.Bf3 Nfe4 4.Nc6 Rxd1+ 5.Rxd1 Bf6 6.Bxe4 Nxe4 7.Bxf6 Nxf6
>  ²  (0.33)   Depth: 10/23   00:00:01  1818kN
>1.Ne2 0-0 2.Kg2 Nc5 3.Bd4 Nfd7 4.Nf4 Bf6 5.Bxd7 Bxd4 6.Rxd4 Rxd7 7.Rxd7 Nxd7
>  ²  (0.28)   Depth: 11/23   00:00:02  2874kN
>1.Ne2 0-0 2.Kg2 Nc5 3.Bd4 Nfd7 4.Nf4 Bf6 5.Bxd7 Bxd4 6.Rxd4 Rxd7 7.Rxd7 Nxd7
>  ²  (0.28)   Depth: 12/24   00:00:04  4895kN
>1.Ne2 0-0 2.Kg2 Nc5 3.Bd4 g6 4.f4 Kg7 5.Ra3 Bd6 6.g4 Rh8 7.g5
>  ²  (0.30)   Depth: 13/25   00:00:08  8951kN
>1.Ne2 0-0 2.Kg2 Nc5 3.Bd4 g6 4.f4 Kg7 5.Ra3 Bd6 6.g4 e5 7.fxe5 Bxe5
>  =  (0.25)   Depth: 14/28   00:00:18  20749kN
>1.Ne2 0-0 2.Kg2 Nc5 3.Bd4 Nfd7 4.Nf4 Bg5 5.Bxd7 Nxd7 6.Be3 Bf6 7.Rab1 g5 8.Nh5
>Be7
>  =  (0.16)   Depth: 15/30   00:00:42  49238kN
>1.Ne4 Nxe4 2.Bxg7 Rg8 3.Bd4 Nec5 4.Bxc5 Bxc5 5.Rxd7 Rxd7 6.Rd1 Rg4 7.Rxd7 Kf8
>8.Bf3 Rxc4 9.Bh5
>  ²  (0.38)   Depth: 15/30   00:00:52  61266kN
>1.g4 h6 2.h4 g5 3.c5 0-0 4.Bxd7 Nxd7 5.hxg5 hxg5 6.c6 Ne5 7.Kg2 Nxg4 8.c7 Rc8
>9.Rd7 Bc5
>  ²  (0.50)   Depth: 15/48   00:01:25  99934kN
>1.g4 h6 2.h4 g5 3.c5 Bxc5 4.hxg5 hxg5 5.Nd5 Nxd5 6.Bxh8 Ke7 7.Bg7 N7f6 8.Bxf6+
>Kxf6 9.Rd3 Kg6 10.Bxd5 Rxd5
>  ²  (0.38)   Depth: 16/48   00:01:56  134890kN
>1.g4 h6 2.h4 g5 3.c5 Bxc5 4.hxg5 hxg5 5.Nd5 Nxd5 6.Bxh8 Ke7 7.Bg7 N7f6 8.Bxf6+
>Kxf6 9.Rd3 Bb4 10.Rc1 Rc8
>  ²  (0.49)   Depth: 17/48   00:02:58  206993kN
>
>(,  12.07.2005)
>
>Uri

Fruit can see higher score of +1.00 at depth 18


1.g4 h6 2.h4 Rg8 3.g5 Nh7 4.Rd3 hxg5 5.hxg5 Bxg5 6.Nd5 exd5 7.Re1+ Kf8 8.Rxd5 g6
9.Bd4 Bf6 10.Bxd7 Bxd4 11.Rxd4
  ±  (1.00)   Depth: 18/54   00:08:08  555460kN

(,  12.07.2005)



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.