Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Can someone tell me what is going on in the game of Deep Junior?

Author: Chessfun

Date: 06:33:37 07/11/00

Go up one level in this thread


On July 11, 2000 at 01:44:57, Chessfun wrote:

>On July 11, 2000 at 01:17:39, blass uri wrote:
>
>>On July 10, 2000 at 18:31:54, Amir Ban wrote:
>><snipped>
>>>In retrospect Junior's Bxe7 is an error
>>>and after the game Anand suggested Be3 instead as a clear win.
>>
>>[D]2r2rk1/4ppb1/1p2n3/4P1B1/1p6/5P2/PPP1BP2/R3K2R w KQ - 0 1
>>
>>Can Deep Junior find Be3 at longer time control and how much time does it need
>>to find Be3?
>>
>>Can my idea to extend forced moves help Junior to find Be3?
>>
>>My idea is that if the opponent's move is forced tactically(in this example Re8
>>is forced after Bxe7) not to play your move on the board but to give Junior to
>>analyze the position after Bxe7 Re8 and if there is a significant drop in the
>>evaluation to go back to the position before Bxe7 Re8 to analyze it again.
>>
>>You need to search to see that a move is forced and my idea is to search the two
>>best moves of the opponent for one second in order to check it.
>>
>>The result is that you lose one second per move in most of the cases because
>>there is not a forced move in most of the cases but you can avoid mistakes
>>in some cases.
>>
>>You may lose more time if the move that you guess that is forced is not forced
>>but I think that it will be rare.
>>
>><snipped>
>>>The move Bg7 is fantastic, especially since the
>>>alternative Rg8 doesn't look like it will hold.
>>
>>Did Junior find the move 33...Bg7 thanks to hardware improvement,software
>>improvement or both.
>>
>>[D]2k1r3/2pb4/1p5b/2p2pNp/p1P2N1P/1P3P2/P1KR2P1/8 b - - 0 1
>>How much time do Junior6a or the commercial Deep Junior need to see 33...Bg7?
>>
>>Uri
>>>
>>>Amir
>
>New position
>2k1r3/2pb4/1p5b/2p2pNp/p1P2N1P/1P3P2/P1KR2P1/8 b - - 0 1
>
>Analysis by Junior 6a:
>
>1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 axb3+ 5.axb3 Rg8 6.Kd3
>  =  (0.05)   Depth: 9   00:00:00  59kN
>1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg8 5.Kc3 Re8 6.bxa4 Bxa4
>  =  (0.07)   Depth: 12   00:00:04  1145kN
>1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg3 5.Kc3 axb3 6.axb3 c6 7.Rd1 Kc7
>  =  (0.08)   Depth: 15   00:00:30  7511kN
>1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg3 5.Nd5 Kb7 6.Kc3 axb3 7.axb3 Bc6 8.Nf4
>  =  (0.07)   Depth: 17   00:02:06  31500kN
>1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg3 5.Kc3 axb3 6.axb3 Rg8 7.Re2 Rg7 8.Re5
>  =  (0.08)   Depth: 18   00:05:09  76930kN
>
>(Bird, Scarb 11.07.2000)
>
>2k1r3/2pb4/1p5b/2p2pNp/p1P2N1P/1P3P2/P1KR2P1/8 b - - 0 1
>
>Analysis by Deep Junior 6.0:
>
>1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 axb3+ 5.axb3 Rg8 6.Kd3
>  =  (0.05)   Depth: 9   00:00:00  43kN
>1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg8 5.Kd3 Rd8 6.bxa4 Bxa4+
>  =  (0.07)   Depth: 12   00:00:04  1184kN
>1...Bg7 2.Nxh5 Bd4 3.g3
>  =  (0.06)   Depth: 12   00:00:05  1184kN
>1...Bg7 2.Nxh5 Bd4 3.Nh3 Rh8 4.N3f4 Be3 5.Re2 axb3+ 6.axb3
>  =  (0.07)   Depth: 15   00:00:15  3939kN
>1...Bg7 2.Nxh5 Bd4 3.g3 Re1 4.Nf4 Ra1 5.bxa4 Rxa2+ 6.Kd3 Ra3+ 7.Ke2 Rxa4 8.Rc2
>Kd8
>  =  (0.20)   Depth: 17   00:01:03  16108kN
>1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg3 5.Nd5 Rg7 6.Kc3
>  =  (0.12)   Depth: 17   00:02:35  16108kN
>1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg3 5.Kc3 axb3 6.axb3 Bc6 7.Re2 Kd8
>  =  (0.10)   Depth: 18   00:07:59  111319kN
>
>(Bird, Scarb 11.07.2000)
>
>I assume if the commercial version is the same as playing that
>it will switch back to Bg7. I will leave it running and see.
>
>Thanks.

2k1r3/2pb4/1p5b/2p2pNp/p1P2N1P/1P3P2/P1KR2P1/8 b - - 0 1

Analysis by Deep Junior 6.0:

1...axb3+ 2.axb3 Rg8 3.Nxh5 Bxg5 4.hxg5 Rxg5
  ²  (0.32)   Depth: 6   00:00:00  1kN
1...Bg7 2.Nxh5 Bd4
  =  (0.06)   Depth: 6   00:00:00  2kN
1...Bg7 2.Nxh5 Bd4
  =  (0.06)   Depth: 9   00:00:00  7kN
1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 axb3+ 5.axb3 Rg8 6.Kd3
  =  (0.05)   Depth: 9   00:00:00  43kN
1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg8 5.Kd3 Rd8 6.bxa4 Bxa4+
  =  (0.07)   Depth: 12   00:00:04  1184kN
1...Bg7 2.Nxh5 Bd4 3.g3
  =  (0.06)   Depth: 12   00:00:05  1184kN
1...Bg7 2.Nxh5 Bd4 3.Nh3 Rh8 4.N3f4 Be3 5.Re2 axb3+ 6.axb3
  =  (0.07)   Depth: 15   00:00:15  3939kN
1...Bg7 2.Nxh5 Bd4 3.g3 Re1 4.Nf4 Ra1 5.bxa4 Rxa2+ 6.Kd3 Ra3+ 7.Ke2 Rxa4 8.Rc2
Kd8
  =  (0.20)   Depth: 17   00:01:03  16108kN
1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg3 5.Nd5 Rg7 6.Kc3
  =  (0.12)   Depth: 17   00:02:35  16108kN
1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg3 5.Kc3 axb3 6.axb3 Bc6 7.Re2 Kd8
  =  (0.10)   Depth: 18   00:07:59  111319kN
1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg3 5.Kc3 axb3 6.axb3 Bc6 7.Re2 Kd8
  =  (0.10)   Depth: 19   00:16:33  227067kN
1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg3 5.Kc3 axb3 6.axb3 Bc6 7.Re2 Kd8
  =  (0.10)   Depth: 20   00:28:44  392688kN
1...Rg8 2.Nxh5
  =  (0.10)   Depth: 21   00:35:58  505469kN
1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg3 5.Kc3 axb3 6.axb3 Bc6 7.Re2 Rg7 8.Re5
Rf7 9.Nd5 Rg7
  =  (0.09)   Depth: 22   01:06:03  944259kN
1...Rg8 2.Nxh5 Bxg5 3.hxg5 Rxg5 4.Nf4 Rg3 5.Kc3 axb3 6.axb3 Bc6 7.Re2 Rg7 8.b4
cxb4+ 9.Kxb4 Rh7 10.Re5
  =  (0.10)   Depth: 23   02:08:03  1877062kN
1...Bg7 2.Nxh5 Bd4 3.g3 Re3 4.Rd3 Re2+ 5.Rd2
  =  (0.00)   Depth: 23   02:40:48  1877062kN
1...Bg7 2.g3 Bd4 3.Re2 Rxe2+ 4.Nxe2 Be5 5.Kd2 Bc6 6.bxa4 Bxa4 7.Nf7 Bg7 8.Nf4
Be8 9.Ng5 Kd7
  =  (0.05)   Depth: 24   04:16:37  3988416kN

(Bird, Scarb 11.07.2000)


Thanks



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.