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Subject: Re: I will replay the game from move 19. Today

Author: Uri Blass

Date: 09:11:08 04/02/02

Go up one level in this thread


On April 02, 2002 at 12:06:48, Uri Blass wrote:

>On April 02, 2002 at 11:03:12, Jorge Pichard wrote:
>
>>On April 02, 2002 at 09:16:06, Uri Blass wrote:
>>
>>>On April 01, 2002 at 20:35:29, Jorge Pichard wrote:
>>>
>>>>Here is a game where both programs NOT knowing what to do in the opening, since
>>>>they are playing without Opening Books Managed to play a decent game of the
>>>>Orangutan or Sokolsky Opening. Again I forced the first move 1.b4.... tomorrow I
>>>>will let both programs select their own first move. Uri needs to make an opening
>>>>Book for his program Movei.
>>>
>>>I think that there are more important things and movei
>>>did not get a losing position out of the opening.
>>>
>>>movei even could get a better position and win a pawn by 19.b5
>>>
>>>I find it strange that movei searched only to depth 2 when
>>>it played 19.Bf3 and I will try to find the problem(if it is a bug in my program
>>>or maybe the celeron was slowed down for some reason).
>>
>>Yes it is strange that it only searched to depth 2; I will replay the game from
>>move 19.... today.
>>
>> Pichard
>
>The problem continued also at moves 20 and 21 and was only
>fixed later.
>
>It did not do a stupid tactical error in these moves
>but it is possible that it could find better moves with deeper search.
>
>I checked only move 19 and my program considers Rgf1
>to be the best move at depthes 7,8,9
>
>Another note is that I found no time control that my program
>play both 2.Bb2 and both 4.Bc3 and on my computer
>at time control that is slow enough to play 2.Bb2
>my program always play 4.h3 and the only explanation that I can find
>for both moves is assuming that the celeron's speed is not proprtional to my
>program's speed.
>
>I hope that there will be no problem in the game because my tests were only from
>the opening position and I am afraid of a bug in
>the time management if my program does not know correctly the number of moves
>for the time control.
>
>My program usually gets this number in the beginning of the game
>and it is reducing it by 1 every time that the computer is
>to move.
>
>It can cause a wrong assumption about the number of moves
>when the game does not start from move 1.
>
>Uri

I analyze the move that my program likes Rgf1 on my pIII800
and I find that it also wins a pawn

Here is yace only material's analaysis(pawn=0.8,knight=3.4,bishop=3.5)

movei00_6 Celeron 433 Mhz - Chess Tiger 14.9 Beta2 Handsp
2kr3r/1ppnbppp/p3p3/4P2n/1PNP4/2B3P1/P1P1K1BP/1R3R2 b - - 0 1

Analysis by Yace 0.99.56:

19...b5 20.Nd2
  =  (-0.10)   Depth: 4   00:00:00
19...Nxe5 20.dxe5
  +-  (2.70)   Depth: 4   00:00:00
19...Rdf8
  =  (0.10)   Depth: 4   00:00:00
19...Rdf8 20.a3
  =  (0.10)   Depth: 4   00:00:00
19...Rdf8 20.a3 Bg5
  =  (0.10)   Depth: 4   00:00:02
19...Rdf8 20.a3 Bg5 21.Bb2
  =  (0.10)   Depth: 4   00:00:06
19...Rdf8 20.g4 Nxe5 21.dxe5 Bxb4
  ²  (0.50)   Depth: 5   00:00:15  13kN
19...Rdf8 20.g4 Nxe5 21.dxe5 b6
  +-  (1.50)   Depth: 5   00:00:15  13kN
19...Rdf8 20.g4 b5 21.Nd2 Nxe5 22.dxe5
  +-  (1.50)   Depth: 5   00:00:17  15kN
19...Bg5 20.g4 b5 21.Nd2
  +-  (1.49)   Depth: 5   00:00:27  22kN
19...Bg5 20.Rxf7 b5 21.Nd2 Rdf8
  ±  (0.90)   Depth: 5   00:00:34  29kN
19...f5 20.g4 fxg4 21.Nd2
  ±  (0.89)   Depth: 5   00:01:03  48kN
19...f5 20.exf6 gxf6 21.Nd2 b5 22.g4
  =  (0.10)   Depth: 5   00:01:06  54kN
19...f5 20.exf6 gxf6 21.Nd2 b5 22.g4 Ng7
  =  (0.10)   Depth: 6   00:01:14  80kN
19...f5 20.exf6 gxf6 21.Nd2 b5 22.g4 Ng7 23.a3
  =  (0.10)   Depth: 7   00:01:21  159kN
19...f5 20.exf6 gxf6 21.Nd2 b5 22.g4 Ng7 23.a3 Kb8
  =  (0.10)   Depth: 8   00:01:22  231kN
19...f5 20.exf6 gxf6 21.Nd2 b5 22.g4 Ng7 23.a3 Kb8 24.Kf2
  =  (0.10)   Depth: 9   00:01:23  731kN
19...f5 20.exf6 Nhxf6 21.Bh3 b5 22.Na5 Ne4 23.Bb2 Rde8 24.Bxe6 Bxb4
  =  (0.10)   Depth: 10   00:01:29  4393kN
19...f5 20.exf6 Nhxf6 21.Bh3 b5 22.Na5 Ne4 23.Bb2 Rde8 24.Nc6 Bg5 25.Kd3
  =  (0.10)   Depth: 11   00:01:43  11232kN
19...f5 20.exf6 Nhxf6 21.Bh3 b5 22.Na5 Ne4 23.Bb2 Rde8 24.Nc6 Bg5 25.Kd3 Ndf6
  =  (0.10)   Depth: 12   00:02:19  29732kN
19...f5 20.exf6 Nhxf6 21.Bh3 b5 22.Na5 Rde8 23.Ba1 Bd6 24.Nc6 Nb8 25.Nxb8 Kxb8
26.Kd3
  =  (0.10)   Depth: 13   00:04:01  82131kN
19...f5 20.Na5 c6 21.b5 axb5 22.a4 bxa4 23.Rxb7 c5 24.d5 exd5 25.e6 Rde8
26.exd7+ Kd8
  ²  (0.50)   Depth: 14   00:07:55  198418kN
19...f5 20.Na5 c6 21.b5 axb5 22.a4 bxa4 23.Rxb7 c5 24.d5 Bg5 25.dxe6 Nb8
26.Rxb8+ Kxb8 27.Nc6+ Kc8
  ±  (0.90)   Depth: 14   00:09:26  244587kN

(Blass, Tel-aviv 02.04.2002)

Uri



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